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

Annotations already say readOnlyHint=false and destructiveHint=false, so the write-but-non-destructive profile is covered. The description adds real value by stating the required 'repo' scope and naming the underlying implementation, but it is silent on whether the PR is draft, what happens to the base branch, and what the result 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 action and value; the internal module path is marginal but helps debugging. No filler paragraphs.

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 six required parameters, low schema coverage, and no output schema, yet the description never explains the required inputs, the resulting PR state, or failure behavior. Given that complexity, the definition leaves too much for the agent to guess.

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 only 29%, so the description carries most of the burden, and it adds nothing: owner, repo, dependency, from_version, to_version are all undocumented in both schema and description. Only base_sha and changelog have schema descriptions, and the description does not mention any parameters at all.

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 names a specific verb and resource: 'Propose a dependency-upgrade PR.' That is clearly distinct from create_pr or propose_doc_update in subject matter, but it never explicitly says how it differs from those siblings (e.g., whether it opens a draft, auto-fills the changelog, or only handles major bumps).

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 'dependency-upgrade' implies the scenario but there is no explicit when-to-use or when-not-to-use guidance, no mention of prerequisites like an existing branch, and no routing to alternatives such as merjax_create_pr, merjax_open_draft_pr, or merjax_propose_doc_update.

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