changelog_from_commits

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

With no annotations provided, the description carries the burden of behavioral disclosure. It does state the input (git commit messages) and the output (changelog), but doesn't disclose processing details like whether it uses an AI model (note the api_key parameter), whether it requires a specific git log format, or what happens when commits don't follow conventional commits. The api_key parameter hints at external service usage, but the description doesn't explain that 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 a single sentence that conveys the core function efficiently. It front-loads the main purpose. However, it could benefit from a second sentence clarifying input expectations (like 'Provide git log output') and the role of api_key without becoming bloated. The current length is acceptable but misses an opportunity for additional useful context in the same concise style.

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 4 parameters including an api_key and group_by strategy, the description is minimal. It doesn't explain the api_key requirement, what 'conventional commits format' means for the input, or how group_by affects output. There's no output schema to clarify return values, so the description should provide more context about the expected input format and output structure. It's adequate for a simple tool but leaves meaningful gaps.

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%, so the schema already documents all four parameters. The description adds the 'conventional commits' context which informs how the commits parameter should be formatted, but it doesn't add meaning beyond the schema beyond that. The api_key parameter's purpose is ambiguous in the schema and the description doesn't clarify it either, so the description doesn't compensate for that 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 'Generate a changelog from git commit messages following conventional commits format' clearly states a specific verb (generate), resource (changelog), input source (git commit messages), and an important format constraint (conventional commits). It distinguishes itself from siblings like changelog_from_prs and changelog_format, though it doesn't explicitly name 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 description implies the tool consumes git commit log output and formats it as a changelog, but it doesn't explicitly state when to use it versus alternatives like changelog_from_prs or changelog_format. The conventional commits mention provides some context for when it's appropriate, but there's no when-not-to-use guidance.

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