Generate Changelog

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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds useful behavioral context by stating it returns Markdown and requires project context, but it does not explain what count_project_context means or what happens if it is missing.

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 concise sentences, with the primary action front-loaded and the return format and prerequisite stated directly. Every sentence earns its place without unnecessary elaboration or redundancy.

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?

The tool is simple with only two well-defined parameters and a read-only annotation, but the lack of an output schema means the description should clarify more about the changelog structure and the meaning of 'project context'. It is adequate for basic invocation but has notable gaps around prerequisites and return details.

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 specId and versionId as GUIDs. The description adds only implicit meaning by referring to 'specification version' and 'previous version', but it does not materially enhance parameter understanding beyond the 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 ('Generate'), a resource ('changelog for a specification version'), and the method ('by comparing it with the previous version'). It also distinguishes the output as structured Markdown, which separates it from sibling tools like compare_versions that would provide raw comparison data.

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?

No explicit guidance on when to use this tool versus alternatives such as compare_versions. The phrase 'Requires project context' hints at a prerequisite but does not explain how to establish it or when this tool should be preferred over others.

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