GitMCP

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. 'Clone a repository' implies a read/write operation that creates local files, but it doesn't specify permissions needed, whether it overwrites existing directories, error handling, or output format. This leaves significant gaps for a tool that modifies the filesystem.

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 extremely concise with just three words, front-loading the core action and resource. There's zero wasted text, making it easy to parse quickly while still conveying the essential purpose.

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?

Given the complexity of cloning (filesystem changes, network operations) and lack of annotations or output schema, the description is incomplete. It doesn't cover behavioral aspects like what happens on failure, whether 'dest' must not exist, or what the tool returns, leaving the agent with insufficient context 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 100%, with both parameters (url, dest) clearly documented in the schema. The description adds no additional parameter semantics beyond what's in the schema, so it meets the baseline of 3 for adequate coverage without extra value.

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 'Clone a repository' clearly states the action (clone) and resource (repository), making the purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'git_init' (which creates a new repository) or 'git_pull' (which updates an existing clone), missing explicit sibling distinction.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing a repository URL), when not to use it (e.g., for existing repositories), or direct alternatives among siblings like 'git_init' for new repositories or 'git_pull' for updates.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.