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

Annotations already indicate readOnlyHint=true and destructiveHint=false, so the tool's safety is clear. The description adds little beyond noting the same engine as a sibling, which is contextual but not behavioral. It doesn't disclose rate limits, auth needs, or output characteristics.

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 highly concise, using two efficient sentences that convey the purpose and key distinction without any fluff.

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 simple nature of the tool (2 parameters, no output schema), the description is minimally adequate but lacks details on the output format or commit message conventions. It is not fully complete for an agent to understand all implications.

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?

With 50% schema description coverage, the description does not compensate for the undocumented 'diff' parameter. The 'style' parameter has a brief description, but the tool description adds no further meaning to either parameter, leaving the agent to infer usage.

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 clearly states it generates a commit message for a diff, and explicitly distinguishes it from gluecron_generate_pr_description, ensuring the agent selects the correct tool for commit messages vs. PR descriptions.

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 a clear context by mentioning the sibling tool, implying when to use this (commit messages) versus the other (PR descriptions). However, it does not explicitly state when not to use it or provide alternatives, leaving room for improvement.

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