wakatime_summaries

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

No annotations are provided, so the description must convey safety and side effects. It only states that the API is called and JSON is returned, implying a read-only operation without explicitly stating it. Missing details on authentication, rate limits, error behavior, or whether it fetches data from the API only (no side effects).

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, concise and front-loaded with the core action and result. It avoids fluff, though it lacks structural cues like bullet points for parameters.

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?

With 5 parameters and no output schema, the description is too sparse. It doesn't mention optional filters (project, branches, timezone) or describe the structure of the returned data, leaving the agent without sufficient context to invoke it fully correctly.

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 80%, so the schema already documents start/end, branches, and timezone. The description adds no parameter details beyond 'specified period,' so it stays at baseline 3.

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 the tool calls the WakaTime Summaries API and returns daily summaries as JSON for a specified date range. The verb 'return' and resource 'daily summaries' distinguish it from sibling tools like wakatime_today or wakatime_durations.

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 use for retrieving daily summaries over a period, but provides no explicit guidance on when to prefer this tool over siblings or any prerequisites. No alternatives or exclusions are mentioned.

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