GitHub Master MCP
Allows opening, cloning, inspecting, editing, and committing to GitHub repositories, plus repository creation, branch/commit history, releases, issues, and pull request management (including merging), using a configured fine-grained personal access token.
Lists GitHub Actions workflows and workflow runs, and requests workflow run reruns with confirmation.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@GitHub Master MCPopen https://github.com/acme/shop and analyze the project structure"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
GitHub Master MCP
A local and remote MCP server that gives compatible AI clients tools to open, inspect, edit, test, commit, and manage GitHub repositories.
Two connection modes are available: local STDIO for desktop/local MCP clients, or remote Streamable HTTP at /mcp for clients that can connect to a remote MCP URL and send a Bearer token. Remote mode is protected by a separate high-entropy access token. The GitHub token stays on the server and is never sent to the AI client.
Important: publishing this repository on GitHub does not automatically make it appear in an AI app's plugin directory. The AI app must support remote MCP servers and the authentication method configured here. This version uses a static Bearer access token, not a GitHub OAuth sign-in flow or an app-directory listing.
What it can do
This release exposes the existing GitHub/project tools over either local STDIO or authenticated remote Streamable HTTP.
Project workflow
open_repository— paste a GitHub repository URL (or a/tree/branchURL); clone/fetch it locally and set it as the active project.analyze_project— inspect project manifests, scripts, README, top-level files, and Git status.list_project_files,read_project_file,search_project_code— explore the codebase.write_project_file,delete_project_file— modify local project files.git_status,git_diff— review changes.run_project_script— run allow-listed project scripts when local command execution is enabled.create_branch,commit_changes,push_branch,commit_and_push— prepare and send changes to GitHub with safeguards.
GitHub operations
Verify the authenticated account (
github_whoami).Create repositories for the authenticated user or an organization (
create_repository).Create and list issues.
Create and list pull requests; merge a pull request with confirmation.
List GitHub Actions workflows and request a workflow run rerun with confirmation.
Repository discovery, details, branch/commit history, releases, workflow runs, and reruns are included. Repository forks are supported too. The available operations depend on the token's repository access and fine-grained permissions. This project intentionally does not expose repository deletion or arbitrary API passthrough tools.
Related MCP server: Git MCP Server
Requirements
Node.js 20.6 or newer (Node 22 LTS or newer recommended).
Git installed and available on PATH.
A GitHub fine-grained Personal Access Token for private repositories and write operations.
An MCP-compatible AI application that supports local STDIO or remote Streamable HTTP with Bearer-token headers.
Install
git clone https://github.com/YOUR_USERNAME/github-master-mcp.git
cd github-master-mcp
npm install
cp .env.example .envEdit .env and set at least:
GITHUB_TOKEN=github_pat_your_token_here
GITHUB_MCP_WORKSPACE=./workspaces
GITHUB_MCP_MODE=edit
GITHUB_MCP_ALLOW_PUSH=false
GITHUB_MCP_CONFIRMATION_PHRASE=use-a-long-private-phrase-here
GITHUB_MCP_ALLOW_COMMANDS=false
GITHUB_MCP_ALLOWED_SCRIPTS=test,build,lint,typecheck,checkNever commit .env, paste your token into an AI chat, or share the confirmation phrase. .env is ignored by Git.
Remote MCP deployment (Render)
Remote mode makes the MCP endpoint reachable over HTTPS so a compatible AI client can connect by URL. The endpoint is /mcp; /healthz is a public health check. Remote mode is single-owner: every authenticated connection uses the GitHub token configured on this server. Do not share the endpoint and access token with other people.
1. Prepare secrets
Install dependencies locally, then generate a separate remote access token:
npm install
npm run generate:tokenCopy the generated value somewhere private. It is the MCP connection password; it is not your GitHub token. Also prepare a GitHub fine-grained PAT with access only to the repositories you intend the server to manage.
2. Deploy the repository
Push this project to your GitHub repository, then create a Render Web Service from that repository. Render can read the included render.yaml. In the service Environment settings, add these secrets:
GITHUB_TOKEN— your GitHub fine-grained PAT.GITHUB_MCP_ACCESS_TOKEN— the generated random bearer token.GITHUB_MCP_CONFIRMATION_PHRASE— a separate private phrase used to approve destructive actions.
The blueprint sets remote HTTP mode, editing enabled, and push/command execution disabled by default. Keep those safe defaults initially. Render supplies PORT; the service binds to 0.0.0.0.
When the deploy is live, your MCP URL is:
https://YOUR-SERVICE.onrender.com/mcpHealth check:
https://YOUR-SERVICE.onrender.com/healthz3. Connect an MCP client
In an MCP client that supports remote Streamable HTTP and custom Bearer headers, connect to the /mcp URL and set this header:
Authorization: Bearer YOUR_GITHUB_MCP_ACCESS_TOKENSome clients expose this as an Authentication/API key field instead of a custom header. Their setup screens differ; use the exact option for that client. examples/remote-mcp.json is only a generic configuration example, not a universal config format.
4. Start working
Once connected, ask the AI to open a repository URL, analyze it, and make changes. Example:
Open https://github.com/OWNER/REPO. Analyze the project structure and important files.
Make the requested changes, preserve the current stack and existing behavior,
run the available checks, and show me the final diff. Do not commit or push until
I explicitly approve.Remote-mode limitations
This is a private, single-owner remote MCP server using one GitHub PAT. It is not yet multi-user GitHub OAuth, and this code does not publish an app to any AI app directory.
A client must support remote MCP plus the configured Bearer authentication. A URL alone does not grant access.
Keep
GITHUB_MCP_ALLOW_PUSH=falseuntil you are ready. To enable pushing, set it totruein the host environment and redeploy; commit/push tools still require the confirmation phrase.Keep
GITHUB_MCP_ALLOW_COMMANDS=false. Repository scripts can execute arbitrary code and are disabled by default.Render free services may sleep or restart. The working clone is not guaranteed to survive a restart; call
open_repositoryagain after reconnecting.Never place GitHub PATs, bearer tokens, or confirmation phrases in source files, commit history, or public chat.
GitHub token permissions
Create a fine-grained token and limit it to only the repositories you need. For normal project editing and pushing, grant repository Contents: Read and write. Add only what you need for the optional tools:
Repository creation: Repository creation: Write or Administration: Write, depending on the endpoint/account type; organization creation may require additional organization-level rights.
Issues: Issues: Read and write.
Pull requests: Pull requests: Read and write; merge operations also require contents write access.
GitHub Actions list/rerun: Actions: Read for listing and Actions: Write for rerunning.
Private repository checkout: token must include the selected repository and Contents read access.
GitHub changes its fine-grained permission requirements by endpoint. Check the live GitHub permissions reference if an endpoint returns 403/404. A token cannot grant access beyond the account's own repository/org rights.
Connect to an AI client
The examples in examples/ show common STDIO configuration shapes. Replace /ABSOLUTE/PATH with the actual absolute path to this project. The command passes the .env file explicitly using Node's --env-file option so it does not matter which directory the AI client starts in.
Claude Desktop
Copy the contents of examples/claude-desktop.config.json into your Claude Desktop MCP configuration and replace the paths. Restart Claude Desktop.
Cursor
Use the configuration in examples/cursor.mcp.json in your MCP configuration (commonly .cursor/mcp.json in a project, or the global MCP configuration UI). Replace the paths and reload MCP servers.
OpenCode
Merge examples/opencode.json into your OpenCode config and replace the paths. Do not overwrite other existing config entries; merge the mcp.github-master object.
Other MCP-compatible hosts use the same STDIO launch command:
node --env-file=/absolute/path/github-master-mcp/.env /absolute/path/github-master-mcp/src/index.jsIf your client supports environment variables directly, you can pass the .env values in its MCP server environment instead of using --env-file.
How to use it in chat
After the MCP server shows as connected, paste a repository URL and ask the AI to work on it. Example:
Open
https://github.com/owner/repository, analyze the whole project, then redesign the settings page. Preserve the existing stack and behavior. Inspect the relevant files first, make the smallest safe changes, and show me the Git diff. Do not commit or push yet.
Then review the AI's changes using git_status and git_diff. If satisfied, explicitly ask it to commit. The tool requires your private phrase. To push, GITHUB_MCP_ALLOW_PUSH=true must also be enabled in your local .env, and the owner must provide the phrase in the conversation when approving that push.
Useful prompt
Use GitHub Master MCP. Open this repository: <PASTE_REPOSITORY_URL>
First analyze the project structure, framework, dependencies, and important flows.
Before editing, inspect the relevant files and explain the implementation plan.
Make the requested changes in the local checkout. Preserve existing UI, routes,
APIs, and features unless I specifically ask to change them. Do not fabricate
files or claim tests passed unless you ran them. Run only the available safe
checks, inspect the final diff, and do not commit or push until I explicitly approve.Security model and defaults
Authentication: remote
/mcpcalls require a high-entropy Bearer token checked before MCP requests reach the tools.Local checkout: code edits are made in the selected local workspace; opening a repo does not push anything.
Push disabled by default: set
GITHUB_MCP_ALLOW_PUSH=trueonly when you are ready to permit remote pushes.Confirmation phrase: commit, push, PR merge, workflow rerun, and file deletion require the local phrase configured in
.env. The owner should only disclose it in chat when approving that exact action.Command execution disabled by default: project scripts can execute repository-controlled code. Enable
GITHUB_MCP_ALLOW_COMMANDS=trueonly for repositories you trust. Only script names inGITHUB_MCP_ALLOWED_SCRIPTSare accepted, each run has a timeout, and the GitHub token/approval phrase are stripped from the script environment. Git hooks are disabled for MCP-managed Git commands.Secret-file guard:
.envfiles, private keys, certificate bundles, common credential files,.git, andnode_modulesare blocked from file tools; secret-like paths are also excluded from automatic commit staging.Path guard: absolute paths, parent traversal, and protected internal directories are blocked.
Least privilege: use a fine-grained token restricted to selected repositories and minimum permissions.
The confirmation phrase is an additional guard, not a replacement for the AI client's own tool-approval UI or a trusted local machine. Do not enable write/push permissions for an AI client you do not trust.
Configuration reference
Variable | Default | Purpose |
| empty | GitHub token; required for private repos and API write operations |
|
|
|
| empty | Required in HTTP mode; private Bearer token, minimum 32 characters |
|
| HTTP listen port; Render sets |
|
| Local clone directory |
|
|
|
|
| Must be |
| empty | Private phrase required for destructive/remote actions |
|
| Enables allow-listed project scripts |
|
| Allowed package.json script names |
|
| Maximum file count in a project scan |
Troubleshooting
MCP server not starting: confirm Node 20+, run
npm install, then runnpm run check. Check the MCP client logs. In STDIO mode, stdout is reserved for MCP protocol messages.gitnot found: install Git and make suregit --versionworks in the same environment used by your AI client.401/403/404 from GitHub: check that the token is valid, has access to that repository, and has the endpoint-specific fine-grained permissions. GitHub may return 404 for private repositories the token cannot access.
Remote endpoint returns 401: confirm the client sends
Authorization: Bearer ...and that it exactly matchesGITHUB_MCP_ACCESS_TOKENon the host.HTTP mode does not start: confirm
GITHUB_MCP_TRANSPORT=http,GITHUB_TOKEN, and a 32+ characterGITHUB_MCP_ACCESS_TOKENare set.Private clone fails: confirm
GITHUB_TOKENis set on the server, has Contents read access, and includes that repository.Push blocked: confirm local changes are committed,
GITHUB_MCP_ALLOW_PUSH=true, the configured phrase is set, and the token has Contents write access.Command execution blocked: by design. Set
GITHUB_MCP_ALLOW_COMMANDS=trueonly for a trusted repo and allow the needed script name.
Git author setup
Before creating commits, configure your Git author once on the machine if it is not already set:
git config --global user.name "Your Name"
git config --global user.email "you@example.com"Development
npm run check
npm testLicense
MIT. See LICENSE.
Available Tools
30 toolsanalyze_projectA
Analyze the currently open repository: project type, manifests, README, file tree, likely scripts, and Git status. Open a repository first.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden; 'analyze' strongly implies read-only, but that is never stated, nor is whether anything is mutated or cached. The prerequisite is a real behavioral disclosure and the enumerated facets hint at the response shape, but cost, permissions, and side effects go unmentioned.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences, front-loaded with the verb and scope, ending with the prerequisite. Nothing is padded and nothing important is buried.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter, no-output-schema tool, the enumerated facets effectively describe what will be returned, which is the main thing an agent needs. The only real gap is the absence of an explicit read-only/no-side-effects statement.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Zero parameters, so the baseline of 4 applies. The description correctly implies the tool operates on implicit session state (the currently open repository), which is the only 'parameter' semantics that matter here.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb (analyze) and resource (the currently open repository) and enumerates exactly what is inspected: project type, manifests, README, file tree, scripts, Git status. That scope clearly separates it from narrow siblings like git_status or list_project_files, though it never names them explicitly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The prerequisite 'Open a repository first' is genuinely useful and is the key precondition an agent would otherwise miss. However, there is no guidance on when to prefer this survey over the individual siblings (list_project_files, git_status, search_project_code) that cover the same ground piecemeal.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
commit_and_pushB
Stage safe changes, create a commit, then push the current branch. Requires GITHUB_MCP_ALLOW_PUSH=true and the owner confirmation phrase.
| Name | Required | Description | Default |
|---|---|---|---|
| message | Yes | ||
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden, and it does disclose that this is a mutating remote-write operation gated by an environment flag and a confirmation phrase — useful context an agent would not otherwise have. But 'safe changes' is never defined (which files are staged, what is excluded, e.g. secrets or ignored paths), and there is no disclosure of partial-failure behavior if the commit succeeds but the push is rejected.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two front-loaded sentences with no filler: the action sequence comes first and the prerequisite second. Minor deduction for the imprecise term 'safe changes', which occupies space without conveying a checkable rule.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
This is a multi-step destructive operation with no annotations, no output schema, and fully undocumented parameters, so the description should do considerably more. It omits what gets staged, what the agent must supply for the confirmation phrase, and how failures mid-sequence leave the repository — all critical for an irreversible remote push.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% and neither `message` nor `confirmationPhrase` has any documentation in the schema, so the description must compensate — and it does not. It says nothing about what the confirmation phrase must literally contain (the 'owner confirmation phrase' is never specified) or any constraint on the commit message, leaving both required parameters semantically opaque.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific three-step verb sequence (stage, commit, push) against a named resource (the current branch), so the agent knows exactly what operation this performs. It does not differentiate from the sibling tools `commit_changes` and `push_branch`, which appear to be the individual steps of this composite, so an agent cannot tell from the description why it would pick this over those.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description gives a real gating prerequisite (GITHUB_MCP_ALLOW_PUSH=true plus an owner confirmation phrase), which tells the agent under what conditions the call will succeed. However, it never states when to use this composite tool versus the sibling `commit_changes` and `push_branch`, nor does it say whether the tool should be avoided when the agent only wants to commit without pushing.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
commit_changesB
Stage safe local changes and create a local Git commit. Requires the owner confirmation phrase. Secret-like files are never staged.
| Name | Required | Description | Default |
|---|---|---|---|
| message | Yes | ||
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It usefully discloses that an owner confirmation phrase is required and that secret-like files are never staged, which are meaningful safety behaviors. It does not disclose what happens if there are no changes to commit, whether the operation is atomic, or what the response looks like.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three short sentences, front-loaded with the core action and followed by the key requirement and safety constraint. Every sentence earns its place with no filler.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with no annotations, no output schema, and zero parameter description coverage, the description covers the main action and two important safety/authorization details. It remains incomplete regarding return values, failure modes, and precise parameter semantics, which leaves meaningful gaps for an agent invoking it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate for the two undocumented parameters. It hints that confirmationPhrase is required, but does not explain the format, origin, or validation rules for that phrase, and it does not explicitly explain that 'message' is the commit message or its constraints.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: staging local changes and creating a local Git commit. It implicitly distinguishes itself from the sibling commit_and_push by emphasizing 'local' commit, but it does not explicitly name or contrast with that sibling.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It provides some context by noting the owner confirmation phrase requirement and that secret-like files are never staged, which helps an agent know when this tool is applicable. However, it does not explicitly say when to choose commit_changes versus commit_and_push or push_branch, leaving that inference to the agent.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_branchB
Create and switch to a new local branch in the open repository.
| Name | Required | Description | Default |
|---|---|---|---|
| branch | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden. It does disclose two useful traits beyond the name: the branch is local (not pushed remotely) and the working tree is switched to it. It says nothing about what happens if the branch already exists, where the branch is created from (current HEAD), or behavior with uncommitted changes — all material for a state-changing git operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
One sentence, front-loaded with the verb and resource, with no filler. Every clause ('local', 'and switch to') carries distinct meaning.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter tool with no output schema, the description covers the core action and its immediate side effect. However, with zero annotation coverage it should also state failure modes (branch exists, no repo open) and the branch's starting point, which are absent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the single `branch` parameter is documented only by its name and a minLength constraint. The description adds no guidance on naming conventions, allowed characters or slashes, or whether an existing name is rejected, so it does not compensate for the coverage gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description gives a specific verb (create) plus the resource (a new local branch) and an important secondary effect (switch to it), which an agent cannot infer from the name alone. 'Local' implicitly separates it from push_branch, but no sibling is named explicitly, so it falls just short of full differentiation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no statement of when to use this versus list_branches, open_repository, or push_branch, and no prerequisites such as needing a repository already open. The only usage signal is the implicit workflow order suggested by 'create and switch'.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_issueC
Create an issue in the open GitHub repository.
| Name | Required | Description | Default |
|---|---|---|---|
| body | No | ||
| title | Yes | ||
| labels | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. 'Create' implies mutation, but there is no disclosure of permissions/auth requirements, behavior on failure, or what the response contains; the only implicit context is that a repository must be open.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with no waste, but its brevity reflects under-specification rather than efficient information density.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with no annotations, no output schema, and undocumented parameters, the definition is too thin to guide correct invocation; it should at least cover permissions and parameter intent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% and none of the three parameters (title, body, labels) are explained in the description. The description adds no meaning about parameter formats, label semantics, or required fields beyond what the bare schema shows.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource (create an issue) and anchors it to the currently open GitHub repository, which distinguishes it from list_issues and the pull-request siblings. It does not explicitly name an alternative, keeping it just short of a 5.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no statement of when to use this over siblings like create_pull_request or list_issues, and no prerequisites or preconditions beyond the implicit 'open repository'.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_pull_requestB
Create a pull request for the current or supplied head branch. The branch must already exist on GitHub.
| Name | Required | Description | Default |
|---|---|---|---|
| base | No | ||
| body | No | ||
| head | No | ||
| draft | No | ||
| title | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It discloses the creation action and one precondition, but it omits permissions/auth requirements, whether the operation is idempotent, what happens if a PR already exists, and what response or side effects to expect.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two short sentences with no wasted text. It is front-loaded with the core action and follows with the key branch precondition.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with five parameters, no annotations, no schema descriptions, and no output schema, the definition is thin. It covers the high-level action and one precondition but leaves important calling details such as base branch defaults, draft behavior, required title semantics, and result format unaddressed.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate for all five parameters. It adds meaning only for 'head' by saying it can be current or supplied and must exist, while leaving 'title' required status, 'base', 'body', and 'draft' completely unexplained.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: create a pull request. It also clarifies head-branch behavior, but it does not explicitly distinguish itself from siblings such as list_pull_requests or merge_pull_request beyond the verb 'create'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives a useful precondition that the branch must already exist on GitHub and implies the tool is used for the current or supplied head branch. However, it does not say when to use this versus alternatives like create_branch or merge_pull_request, nor does it describe exclusions or failure conditions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_releaseC
Create a GitHub release in the active repository. The tag can be created from targetCommitish when needed.
| Name | Required | Description | Default |
|---|---|---|---|
| body | No | ||
| name | No | ||
| draft | No | ||
| tagName | Yes | ||
| prerelease | No | ||
| targetCommitish | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It says a tag may be created from targetCommitish, hinting at a side effect, but does not state whether the tag is pushed, what permissions are required, how draft/prerelease affect visibility, or whether the operation is reversible.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences with the core action front-loaded and no filler. It is appropriately sized, though the second sentence is the only place semantics are added, so conciseness comes at some cost to completeness.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
This is a mutation tool with no annotations, no output schema, and 0% parameter description coverage. The description does not explain return values, permission requirements, side effects on tags, or the meaning of most parameters, so it is incomplete for an agent to invoke reliably.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% across six parameters. The description explains only targetCommitish ('The tag can be created from targetCommitish when needed'), leaving tagName, name, body, draft, and prerelease completely undocumented in both schema and description. This is a substantial semantic gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: 'Create a GitHub release in the active repository.' This clearly distinguishes the tool from all siblings, none of which create releases. It stops short of 5 because it doesn't clarify the scope of 'active repository' or how release creation differs from adjacent tag/branch operations.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The only usage hint is 'The tag can be created from targetCommitish when needed,' which implies when to supply targetCommitish but gives no broader guidance on when to create a release versus a tag, draft versus published release, or prerequisites. There are no explicit exclusions or alternative-tool references.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_repositoryB
Create a new GitHub repository for the authenticated user, or under an organization when organization is provided.
| Name | Required | Description | Default |
|---|---|---|---|
| name | Yes | ||
| autoInit | No | ||
| isPrivate | No | ||
| description | No | ||
| organization | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It does not state what happens on a name collision, what the defaults are for isPrivate and autoInit, whether the repo is initialized with a README, or what permissions are required to create under an organization. For a mutating, externally-visible operation this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence with zero filler, and the primary action is front-loaded ahead of the organizational scoping clause. Nothing redundant.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with no annotations, no output schema, and 0% parameter documentation, the description should at minimum cover defaults, failure modes, and required authorization. It covers only which account the repo lands under, leaving the agent unable to predict the created repository's state.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It does add meaning for organization ("under an organization when organization is provided"), but says nothing about name constraints, what autoInit does, whether isPrivate defaults to public, or how the free-text description is used — four of five parameters remain opaque.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource ("Create a new GitHub repository") and clarifies the two ownership scopes: personal vs. organization. It does not distinguish itself from siblings such as fork_repository (creating a copy of an existing repo), which would be the natural disambiguation here.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Usage is implied by the verb — an agent would reach for this when a new, empty repo is needed rather than a fork or a listing. There is no explicit when-not guidance, no prerequisites (org membership, token scopes), and no named alternative for creating from an existing repository.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
delete_project_fileA
Delete a repository file locally. Requires the owner confirmation phrase. Cannot delete Git metadata or secret files.
| Name | Required | Description | Default |
|---|---|---|---|
| path | Yes | ||
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are present, so the description must carry the full behavioral profile. It does disclose locality, the confirmation requirement, and protected file classes, but it omits whether deletion is permanent or reversible, what permissions are needed beyond the phrase, and what happens on failure. Those are significant gaps for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three short sentences, front-loaded with the core action; each sentence adds a distinct operational fact (locality, confirmation, exclusions). No filler.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a destructive two-parameter tool with no annotations and no output schema, the definition should explain path semantics, how to obtain and format the confirmation phrase, irreversibility, and likely failure modes. It covers only the confirmation prerequisite and protected files, so an agent lacks enough information to invoke it safely in all cases.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must define both parameters. It only vaguely references confirmationPhrase ('owner confirmation phrase') and says nothing about the path parameter, such as whether it is repo-relative or absolute, nor where to obtain the phrase. This leaves both parameters under-specified.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Names a specific verb (Delete) and resource (repository file) and scopes it locally; the two exclusions (Git metadata, secret files) further pin down what the tool does. An agent can distinguish it from write_project_file without opening the schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
States a prerequisite (owner confirmation phrase) and two exclusions, which gives some when-to-use context. However, it never names an alternative tool or explains when a file should be overwritten or removed via a different path, so routing guidance is only implied.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
fork_repositoryC
Create a fork of the active repository under the authenticated user or a specified organization.
| Name | Required | Description | Default |
|---|---|---|---|
| organization | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and discloses almost nothing behavioral: no note that GitHub forks are asynchronous, no permission/auth requirements, no statement about whether an existing fork is returned or duplicated, and no indication of what 'active repository' resolves to.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
One sentence, zero waste, front-loaded with the action and immediately followed by the scoping qualifier. Nothing is padded or repeated from structured fields.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a no-annotation, no-output-schema mutation tool, the description should cover side effects and async/duplicate semantics; it covers none of them. An agent knows what to call but not what to expect back or how the operation behaves.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The single optional parameter has 0% schema coverage with no description, so the description is the only source of meaning. It does establish that 'organization' is a destination alternative to the authenticated user (implying user-default when omitted), which is genuine added value, but it gives no format, naming, or conflict behavior for that string.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb+resource ('Create a fork') scoped to 'the active repository', which an agent can distinguish from create_repository (new repo) without opening schemas. It stops short of explicitly naming that sibling, so differentiation is inferred rather than stated.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The only guidance is where the fork lands (user vs. organization), which is parameter behavior rather than when-to-use. There is no statement of prerequisites, when to prefer this over create_repository, or what happens if a fork already exists.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_repository_detailsB
Get the current active repository metadata and permissions from GitHub.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full behavioral burden. It implies a read operation and mentions permissions, but does not disclose authentication requirements, behavior when no active repository exists, or whether any state is modified.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, front-loaded sentence with no wasted wording. It communicates the core action and return subject efficiently.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter tool, the description is minimally adequate but leaves key context undefined: what makes a repository 'active' and what exact metadata is returned. The absence of an output schema increases the need for that context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has zero parameters, so there is no parameter semantics to explain. The baseline for no-parameter tools is 4, and the description does not need to compensate for missing parameter documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb (get) and resource (repository metadata and permissions), which distinguishes it from list_repositories, create_repository, and similar siblings. However, 'current active repository' is not defined, leaving ambiguity about which repository is meant.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no guidance on when to use this tool versus alternatives such as list_repositories, open_repository, or github_whoami. It also does not state prerequisites like needing an active repository context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
git_diffA
Show the local diff. Use staged=false for unstaged changes and staged=true for staged changes.
| Name | Required | Description | Default |
|---|---|---|---|
| staged | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. 'Local diff' implies a read-only, local-only operation, but it does not explicitly state that there are no side effects, nor does it describe the output format or any prerequisites.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences with no wasted words. The core purpose is front-loaded, followed immediately by the parameter guidance.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter read-only tool, the description covers the main behavioral choice. Since there is no output schema, it could say more about the returned diff format, but the tool's purpose is simple enough that this is a minor gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema provides no parameter descriptions, but the description compensates by explaining both boolean values: staged=false for unstaged changes and staged=true for staged changes. This adds clear meaning beyond the bare boolean schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: 'Show the local diff.' This clearly distinguishes it from write-oriented siblings, though it does not explicitly contrast with the closely related git_status tool.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It explains how to use the staged parameter for staged versus unstaged changes, which implies usage. However, it does not say when to choose git_diff over git_status or other siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
github_whoamiA
Verify the configured GitHub token and show the authenticated GitHub account.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full behavioral burden. It conveys that the call is non-mutating and touches the configured token, but says nothing about failure behavior (e.g., what happens with an invalid or expired token), whether it performs a live API call, or whether scopes/permissions are reported. Adequate for a trivial read, but the error path is undisclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with no filler; the verification action and the resulting account display are both stated up front. Nothing is wasted.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no annotations and no output schema, the description is the only source of return-value information, yet 'show the authenticated GitHub account' does not indicate which fields come back (login, name, email, scopes). For such a simple tool the omission is minor, but an agent cannot predict the response shape.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline of 4 applies. The description correctly implies the tool is argument-free by framing the token as 'configured' rather than passed in.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb pair (verify / show) against a specific resource (configured GitHub token, authenticated account). No sibling tool does authentication introspection, so the agent can immediately tell this is the identity/credential check rather than a repo or commit operation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Usage is only implied: 'verify the configured GitHub token' hints at a pre-flight credential check before other GitHub calls, but the description never says when to reach for it, nor does it reference any alternative or prerequisite. For a zero-param tool with no alternatives in the sibling list, this is adequate but not explicit.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
git_statusA
Show Git branch and working-tree status for the active repository.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It does disclose the important scoping behavior — the tool acts on the 'active repository' with no repo argument — and 'Show' implies a non-mutating read, but it says nothing about output detail level, untracked-file handling, or whether the working tree must be clean.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
One sentence, front-loaded with the verb and resource, and every phrase (branch status, working-tree status, active repository) adds information. Nothing to trim.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter read tool with no output schema, the description covers what is inspected and what scope it applies to. The only real gap is what the returned status contains (ahead/behind counts, staged vs unstaged, untracked files), which an agent may want to know before parsing the result.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has zero parameters, so the baseline is 4. The description correctly implies no arguments are needed by anchoring the tool to the 'active repository', which explains why the input object is empty.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Specific verb plus resource: 'Show Git branch and working-tree status', scoped to 'the active repository'. It is clearly distinct from siblings like git_diff, list_branches, or list_commits, though it never names them explicitly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Usage is implied rather than stated: an agent can infer this is the read-only inspection step before diffing or committing, but the description offers no when-to-use framing or mention of alternatives such as git_diff for actual change content.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_branchesC
List branches in the active GitHub repository.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden, yet it says nothing about ordering, pagination/truncation when limit is hit, default result count, or auth requirements against the active repo. Only the read-only nature is weakly implied by 'List'.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with no filler or redundancy. It is efficient, though that efficiency comes partly from omitting information rather than from tight editing of complete content.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no annotations and no output schema, the agent gets no information on the return shape (names vs. objects), default page size, or what 'active repository' means operationally. The single sentence leaves real gaps an agent must guess at.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There is one parameter (limit) at 0% schema description coverage, and the description never mentions it. The schema constrains it as a positive integer but never says whether it caps branches returned or something else, so the description fails to compensate for the coverage gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb ('List') and resource ('branches') and scopes it to 'the active GitHub repository', which separates it from sibling tools like list_commits or create_branch. It does not explicitly name a sibling it is not, but the verb+resource combination is unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no guidance on when to call this versus alternatives such as create_branch or list_commits, nor any stated prerequisites (e.g., needing a selected repository). The only usage signal is the implicit 'you want to see branches', which merely restates the purpose.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_commitsC
List recent commits in the active GitHub repository, optionally filtered by branch or path.
| Name | Required | Description | Default |
|---|---|---|---|
| path | No | ||
| limit | No | ||
| branch | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations at all, the description carries the full burden, yet it never confirms this is a read-only operation, does not disclose the default or maximum result count, ordering (newest first?), or what 'recent' bounds. An agent must guess at the result shape and whether pagination or truncation applies.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single well-formed sentence with the resource front-loaded and filters trailing, no filler. It is efficient but so sparse that the brevity trades against needed detail rather than being pure conciseness.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Three optional parameters, no annotations, and no output schema mean the description is the only source of truth, yet it omits default limits, ordering, and the shape of a returned commit. For a tool an agent will call blind, this leaves significant unanswered questions.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so nothing in the schema explains the three parameters. The description covers only 'branch' and 'path' by name, omitting 'limit' entirely and giving no format details (branch name vs. SHA, path relative to repo root, default and max limit values).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb ('List') and resource ('recent commits') scoped to the active GitHub repository, with the two optional filters named. It is reasonably distinguishable from siblings like git_status or git_diff, though it never explicitly contrasts itself with them.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The phrase 'optionally filtered by branch or path' implies the intended usage, but there is no explicit when-to-use, no when-not-to-use, and no mention of alternatives such as git_status or git_diff for working-tree comparison versus commit history.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_issuesB
List issues for the open repository. Pull requests are excluded from the returned issue list.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| state | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full burden. It usefully discloses one non-obvious behavior — that PRs are filtered out of the result set — but says nothing about pagination, default result count, ordering, or whether closed issues appear by default.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences with zero filler, and the core action is front-loaded ahead of the exclusion caveat. Nothing redundant.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no annotations, no output schema, and 0% parameter coverage, the description is the only documentation available, and it omits defaults, pagination behavior, and how the target repository is determined. That is not enough for an agent to call this reliably without experimentation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so neither parameter is documented in the schema. The description adds no meaning for either: it does not state the default or maximum for limit, nor whether state defaults to open or what "all" includes. Both params are left for the agent to guess.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource ("List issues") and adds a genuine disambiguation: pull requests are excluded, which separates it from the sibling list_pull_requests. The only softness is "the open repository" — it implies an ambient current-repo context rather than naming a repo parameter.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The PR-exclusion sentence implicitly routes pull-request retrieval to list_pull_requests, but the tool never says when to choose this over create_issue or search_project_code, nor any prerequisites. Usage is implied rather than stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_project_filesB
List tracked and untracked text-project files in the open repository. Dependency/build folders and secret-like files are excluded.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and does disclose useful behavior: both tracked and untracked files are returned, and build/dependency and secret-like paths are filtered out. It says nothing about ordering, pagination behavior when limit is hit, or permissions on the open repository.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences, zero filler, with the inclusion scope front-loaded before the exclusion caveat. Nothing is wasted.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple read-only listing tool the description covers what is enumerated and what is filtered, but with no output schema and an undocumented limit parameter, the agent still lacks the return shape and size-control semantics needed to call it confidently.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There is one parameter (limit) with 0% schema description coverage, and the description never mentions it. The agent cannot tell whether limit caps the number of files returned, per page or total, and what the default is.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource ("List ... text-project files in the open repository") plus the inclusion scope (tracked and untracked). This is clearly distinguishable from siblings like search_project_code or read_project_file, though no sibling is named explicitly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The exclusion note (dependency/build folders, secret-like files) implies when the tool is the right one for a broad file inventory, but there is no explicit guidance on when to prefer it over search_project_code or list_branches. Usage must be inferred from the scope statement.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_pull_requestsC
List pull requests in the open repository.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| state | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full disclosure burden. 'List' implies a read-only operation and 'open repository' implies a required prior state, but it says nothing about default state filtering, pagination, or result ordering — meaningful gaps for an unannotated list tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with zero filler. It is efficient, though the brevity borders on under-specification rather than optimal tightness.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a two-parameter list tool with no annotations, no output schema, and no parameter documentation, the description should at minimum cover the default state behavior and limit semantics. None of that is present, leaving the agent to guess at invocation semantics.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% and the description mentions neither of the two parameters. Neither 'limit' nor the 'state' enum (open/closed/all) is explained, and critically the default state is unspecified, so an agent cannot tell whether omitting 'state' returns only open PRs or all of them.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource ('List pull requests') and scopes it to the currently open repository, which lets an agent distinguish it from create_pull_request or merge_pull_request among the siblings. It does not explicitly name alternatives, but the purpose is unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The phrase 'in the open repository' hints at a prerequisite (a repo must be opened first, e.g. via open_repository), but there is no explicit when-to-use or when-not-to-use guidance, and no routing to alternatives such as list_issues. The agent must infer context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_repositoriesB
List repositories accessible to the authenticated GitHub user, sorted by most recently updated.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| visibility | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full burden. It usefully discloses the auth requirement and the default sort order, but says nothing about pagination behavior despite a limit parameter, nothing about the default visibility filter, and nothing about the response shape. For a read tool with zero annotation coverage this leaves notable gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with no filler. Nothing is redundant, though the compactness comes partly from under-specification rather than tight editing.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple two-optional-parameter read tool with no output schema or annotations, the description covers who, what and ordering. It is not complete enough on parameter behavior (limit/visibility) or pagination for an agent to call it without guessing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% — neither 'limit' nor 'visibility' is documented anywhere. The description adds no meaning for either parameter; it neither explains the limit cap/pagination semantics nor clarifies that 'visibility' defaults to 'all' or how it filters. The 0% coverage demands compensation that isn't provided.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb (List) and resource (repositories) plus the scope constraint (accessible to the authenticated user) and ordering (most recently updated). It is naturally distinguishable from get_repository_details or create_repository by the verb, though it never names a sibling explicitly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The listing intent implies a discovery/entry-point usage, but the description gives no explicit when-to-use, no prerequisites beyond authentication, and no pointer to get_repository_details for per-repo information. Guidance is inferred rather than stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_workflow_runsC
List recent GitHub Actions workflow runs in the active repository.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| status | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states that it lists recent runs in the active repository, but it does not explain permissions needed, pagination behavior, default ordering, how many runs are returned by default, or what the response looks like. The behavioral context is therefore minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single front-loaded sentence that states the action, resource, recency scope, and repository scope without filler. Every phrase contributes useful selection information, and there is no redundant text.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no annotations, no output schema, and 0% schema description coverage, the description should provide more behavioral and parameter context. It does not explain the two filters, pagination or limits, or the shape of returned runs, leaving significant gaps for an agent invoking the tool. The sentence is accurate but insufficiently complete for the structured metadata available.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has two parameters, limit and status, with 0% description coverage and no enums. The description does not mention either parameter, so it adds no meaning about what limit controls or which status values are accepted. An agent must infer parameter behavior entirely from bare schema types.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb and resource: "List recent GitHub Actions workflow runs in the active repository." This clearly distinguishes it from sibling tools such as list_workflows (workflows, not runs) and rerun_workflow (mutation, not listing). It does not explicitly compare itself to siblings, but the resource is specific enough for an agent to identify the tool.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description indicates that the tool lists recent runs in the active repository, which provides implied usage context. However, it does not state when to use this tool instead of list_workflows or rerun_workflow, nor does it mention exclusions such as filtering by workflow ID, branch, or actor. The guidance is adequate but leaves alternatives and boundaries implicit.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_workflowsB
List GitHub Actions workflows configured in the open repository.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full disclosure burden. 'List' implies a read-only operation, but the description says nothing about whether disabled workflows are included, what fields are returned, or pagination behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence with no filler, and the resource is front-loaded immediately after the verb. Nothing is wasted.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter read tool this is nearly adequate, but with no annotations and no output schema, the agent has no idea what a workflow record contains or how results are shaped. A brief note on return contents would close the gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool takes zero parameters, so there are no parameter semantics to explain. This meets the baseline for a parameterless tool.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource (list workflows) with a clear scope: workflows configured in the currently open repository. This distinguishes it implicitly from list_workflow_runs, which deals with executions rather than definitions, though it never names that sibling.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The phrase 'open repository' implies the prerequisite that a repository must be open, but there is no explicit statement of when to use this versus list_workflow_runs or other listing tools. Usage is inferable rather than stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
merge_pull_requestB
Merge a pull request in the open repository. Requires owner confirmation phrase to prevent accidental merges.
| Name | Required | Description | Default |
|---|---|---|---|
| number | Yes | ||
| mergeMethod | No | ||
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden. It usefully discloses that an owner confirmation phrase is required to prevent accidental merges, adding safety context beyond the schema. However, it does not describe permissions, irreversibility, or other side effects of the merge operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two efficient sentences with the core purpose front-loaded and the safety prerequisite immediately following. There is no filler or redundant information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with no annotations, no output schema, and 0% schema description coverage across three parameters, the description is too thin. It omits parameter meanings, merge method effects, required permissions, and expected outcomes, leaving significant gaps for safe invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate for all three parameters. It only indirectly explains confirmationPhrase as a safety measure and does not explain the pull request number or the mergeMethod enum values ('merge', 'squash', 'rebase'), leaving most parameter semantics undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: 'Merge a pull request in the open repository.' This clearly distinguishes it from sibling tools like create_pull_request and list_pull_requests, so an agent can identify the operation without opening the schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description mentions a required confirmation phrase to prevent accidental merges, which is a useful prerequisite, but it gives no explicit guidance on when to use this tool versus alternatives or under what conditions merging is appropriate. The usage context is only implied by the tool name.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
open_repositoryA
Open a GitHub repository from its URL. Clones it to the local workspace and makes it the active project for subsequent project tools. Accepts repository URLs and /tree/branch URLs.
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | ||
| branch | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It usefully states that the tool clones the repository to the local workspace and makes it the active project, but it omits important details such as authentication requirements, whether an existing workspace is overwritten, and error behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three short sentences with no wasted language. The core action and its effect are front-loaded, and the URL format note is placed appropriately at the end.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no annotations, no output schema, and 0% schema description coverage, the description is only partially complete. It covers the main action and URL formats, but it leaves out the branch parameter, authentication needs, overwrite behavior, and return expectations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate for both parameters. It clarifies that the url parameter accepts repository URLs and /tree/branch URLs, but it does not explain the separate branch parameter at all, leaving a significant gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: opening a GitHub repository from its URL. It also distinguishes the effect from sibling tools by explaining that it clones the repository locally and makes it the active project for subsequent project tools.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies when to use the tool by saying it makes the repository active for subsequent project tools, which gives useful context. However, it does not explicitly compare this tool to alternatives such as get_repository_details or list_repositories, nor does it state when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
push_branchB
Push the current local branch to origin. Requires GITHUB_MCP_ALLOW_PUSH=true and the owner confirmation phrase.
| Name | Required | Description | Default |
|---|---|---|---|
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, and it does disclose two real gating constraints: GITHUB_MCP_ALLOW_PUSH=true and an owner confirmation phrase. It omits what a push actually does — force vs fast-forward, which remote ref is targeted, error behavior when the flag is unset, and whether history can be overwritten.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, no filler, with the core action front-loaded and the prerequisites following. Every clause carries information an agent needs before calling.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a write operation with no annotations, no output schema, and an undocumented required parameter, the description is too thin. It never states the literal confirmation phrase value or the return/error behavior, both of which are needed to invoke the tool successfully.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% for the single required parameter, so the description must compensate. Mentioning "the owner confirmation phrase" does connect to confirmationPhrase and signals its purpose, but the exact expected value or format is never stated, leaving the agent unable to supply a correct value from the text alone.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource: "Push the current local branch to origin," which tells an agent exactly what operation occurs. It does not differentiate from close siblings like commit_and_push or commit_changes, so an agent cannot tell from this text whether committing happens first.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies when the tool applies (a local branch that needs to reach origin) and names prerequisites, but gives no explicit guidance on choosing it over commit_and_push or commit_changes. The gating conditions are stated as facts rather than usage decision criteria.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
read_project_fileA
Read a UTF-8 text file in the open repository. Paths are repository-relative; secrets and paths outside the repository are blocked.
| Name | Required | Description | Default |
|---|---|---|---|
| path | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations, so the description must carry the behavioral burden, and it does unusually well: it discloses the access-control boundary ('secrets and paths outside the repository are blocked') and encoding constraints (UTF-8), which are exactly the failure modes an agent will hit. It does not disclose size limits, truncation, or whether a missing file errors vs. returns empty, holding it back from a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences, zero waste, front-loaded with the action and immediately followed by the two constraints that determine correct invocation. Nothing extraneous.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a one-parameter read tool with no annotations and no output schema, the description covers purpose, path format, and security boundary. It does not say what the return value looks like (file content string) or how errors surface (blocked path vs. nonexistent path), which an agent would benefit from given there is no output schema to consult.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% and the single parameter 'path' has no description at all, so the description must compensate. It does: 'Paths are repository-relative' specifies the exact format expected and 'paths outside the repository are blocked' states the constraint. Minor gap: no example syntax or leading-slash behavior.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Specific verb+resource: 'Read a UTF-8 text file in the open repository.' Clearly distinguishes from siblings like write_project_file and delete_project_file, and implicitly from list_project_files. An agent knows exactly what this does without opening the schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Implies usage via 'in the open repository' and 'repository-relative' paths, which nudges the agent toward open_repository first, but it never states when to use this versus search_project_code or list_project_files, nor when not to use it. Usage is implied rather than explicit.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
rerun_workflowB
Re-run a GitHub Actions workflow run by run ID. Requires owner confirmation phrase.
| Name | Required | Description | Default |
|---|---|---|---|
| runId | Yes | ||
| confirmationPhrase | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full burden. It usefully discloses the confirmation-phrase guardrail, but for a mutation that triggers CI it omits whether a new run is created, what permission scope is required, and what happens to the existing run — significant gaps given zero annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences with the operation stated first and the prerequisite second; no filler. Slightly under-specified rather than verbose, but structurally well front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
A mutation tool with no annotations, no output schema, and 0% parameter documentation. An agent still cannot tell what the confirmation phrase must be, what permissions are needed, or what the result of the rerun looks like — the description is too thin for the tool's complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It names both parameters indirectly ('by run ID', 'confirmation phrase') but adds no meaning: the accepted phrase format, whether it must match an owner identity, or the valid range of runId are all left undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Specific verb+resource: 'Re-run a GitHub Actions workflow run', scoped 'by run ID'. That is unambiguous and distinct from the sibling read-only tools (list_workflow_runs, list_workflows). It stops short of 5 only because there is no sibling rerun/cancel tool to be explicitly contrasted with.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies when it applies (a workflow run that needs re-execution) and states a hard prerequisite (owner confirmation phrase), but gives no when-not-to-use guidance, no mention of alternatives, and no indication of whether it applies only to failed runs.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
run_project_scriptB
Run an allow-listed npm/pnpm/yarn/bun script from package.json. Disabled by default because repository scripts execute code.
| Name | Required | Description | Default |
|---|---|---|---|
| script | Yes | ||
| packageManager | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It usefully discloses that scripts are allow-listed and that the tool is disabled by default because repository scripts execute code, which is important safety context. However, it omits what happens on disallowed scripts, timeouts, working directory, and output/return behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences with the key restriction front-loaded. Efficient, though the second sentence could be slightly more precise about enablement.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For an execution tool with no annotations and no output schema, the description is thin. It should cover enabling behavior, failure modes for non-allow-listed scripts, and what the caller gets back; these are missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It mentions the package-manager ecosystems but does not explain the 'packageManager' enum, what 'auto' means, or how the 'script' string maps to package.json entries, leaving key parameter semantics undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource: runs an allow-listed package script from package.json, and names the supported package managers. It is distinct from the sibling file/git tools, though it does not explicitly contrast itself with anything.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies the use case (execute a defined project script) and notes it is disabled by default, which hints at a prerequisite. But it does not say when to choose this over e.g. analyze_project or how to enable it, leaving the agent to infer conditions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_project_codeC
Search repository text files for a literal or regular-expression pattern. Does not search secrets, dependencies, or generated folders.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | ||
| useRegex | No | ||
| maxMatches | No | ||
| caseSensitive | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It discloses the search exclusions, which is useful, but says nothing about result limits/caps, ordering, or whether the operation is read-only. For a tool with four parameters and no annotation cover, this is thin.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two tight sentences with the core capability front-loaded and the exclusion constraint following. Every sentence earns its place, though it could fit one more clarifying clause without bloat.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no output schema, no annotations, and 0% parameter documentation, the description should explain default result caps and what a match returns. It says nothing about return shape or the effect of maxMatches, leaving significant gaps for an agent to call it correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so all four parameters rely on the description, which only implicitly covers useRegex via 'regular-expression pattern'. maxMatches and caseSensitive are never mentioned, leaving them fully undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource: searching repository text files for literal or regex patterns, plus the scope of what is excluded. It's clearly distinguishable from siblings like read_project_file or list_project_files, though it doesn't name them explicitly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The exclusions ('does not search secrets, dependencies, or generated folders') give some negative scope, but there is no explicit guidance on when to use this versus read_project_file or list_project_files. Usage must be inferred.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
write_project_fileA
Create or replace a UTF-8 file in the open repository. This changes only the local checkout; it does not push to GitHub.
| Name | Required | Description | Default |
|---|---|---|---|
| path | Yes | ||
| content | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations at all, the description carries the whole burden and does disclose the two most consequential traits: existing content is overwritten ("replace") and the write is local-only with no GitHub push. It omits permissions/auth needs, failure behavior, and whether parent directories are created, so it is strong but not complete.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences, no filler, and the variant-defining clause (local-only, no push) is placed up front where the agent will read it before deciding whether to follow with a commit tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
There is no output schema and no annotations, so the description must cover the mutation's consequences; it covers overwrite and local scope but leaves the full workflow (write then commit/push) and error/return behavior unstated. Adequate to call the tool, thin on what to do after and what can go wrong.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% and neither parameter is documented anywhere. The description's "in the open repository" hints that "path" is repository-relative, but it says nothing about path anchoring, directory creation, encoding/line-ending handling of "content", or whether an empty path is rejected.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Specific verb pair ("create or replace") plus resource ("a UTF-8 file in the open repository") makes the operation identifiable and separates it from read_project_file and delete_project_file. It never names a sibling or states which repository context is ambiguous, so it stops short of full sibling differentiation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
"Create or replace" implies both creation and overwrite scenarios, and the second sentence implies you still need commit/push tools afterward — but no alternative is named and no exclusion is explicit. An agent must infer that commit_changes/commit_and_push is the follow-up step from the sibling list rather than from the description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
30 tool updates
v1.1.0- First observed
analyze_project - First observed
commit_and_push - First observed
commit_changes - First observed
create_branch - First observed
create_issue - First observed
create_pull_request - First observed
create_release - First observed
create_repository - First observed
delete_project_file - First observed
fork_repository - First observed
get_repository_details - First observed
git_diff - First observed
git_status - First observed
github_whoami - First observed
list_branches - First observed
list_commits - First observed
list_issues - First observed
list_project_files - First observed
list_pull_requests - First observed
list_repositories - First observed
list_workflow_runs - First observed
list_workflows - First observed
merge_pull_request - First observed
open_repository - First observed
push_branch - First observed
read_project_file - First observed
rerun_workflow - First observed
run_project_script - First observed
search_project_code - First observed
write_project_file
TDQS
Scored across 30 tools
Most tools map to a clear resource+action (repos, branches, commits, PRs, issues, releases, Actions, local files), and the local-vs-GitHub distinction is spelled out in descriptions. Two overlaps remain: commit_changes vs commit_and_push vs push_branch (the combined tool is a strict superset of the other two), and analyze_project reporting Git status overlaps with git_status.
The dominant pattern is snake_case verb_noun (list_repositories, create_branch, merge_pull_request, read_project_file), applied consistently across nearly all tools. Deviations are minor: github_whoami uses a namespace prefix plus a non-verb, and git_status/git_diff are bare git-style names rather than verb_noun.
30 tools is above the comfortable range, though the server genuinely spans several sub-domains (GitHub API, Actions, local git, local file/script operations). The count is inflated by redundancy: commit_and_push duplicates commit_changes + push_branch, and analyze_project partially duplicates git_status plus file-listing tools.
Core lifecycle is well covered: open/fork/create repo, branch, edit files, diff, commit, push, open PR, merge PR, create issue, create release, inspect and rerun workflows. Gaps are in the issue/PR secondary surface — no update/close issue, no comment on issues or PRs, no get-single-PR details, no branch deletion.
Maintenance
Related MCP Connectors
Operate GitHub from your AI assistant: repos, PRs, issues, Actions. Previews and read-only mode.
Connect AI assistants to GitHub - manage repos, issues, PRs, and workflows through natural language.
Access the GitHub API, enabling file operations, repository management, search functionality, and…
Read and write KukGit repositories, files, issues and pull requests from an AI assistant.
Related MCP Servers
- AlicenseNot gradedqualityCmaintenanceEnables AI agents to manage GitHub repositories, branches, issues, pull requests, releases, and actions through natural language.221 npm5MIT
- AlicenseBqualityDmaintenanceEnables AI assistants to inspect local Git repositories and interact with the GitHub API for reading commits, diffs, files, issues, comments, pull requests, and project boards.10130 npmISC
- AlicenseNot gradedqualityDmaintenanceEnables AI agents to interact with GitHub via natural language, supporting repository management, issue tracking, file commits, and more.ISC
- FlicenseNot gradedqualityBmaintenanceEnables AI applications to retrieve GitHub repository information, manage issues, and monitor workflow statuses through the GitHub REST API.-