get_subscription_request_history_stats

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

Annotations already declare readOnlyHint=true and destructiveHint=false, and the description's '[READ]' tag merely repeats that. It adds no behavioral detail beyond the structured data: no indication of the scope of aggregation, time-range assumptions, cost, or what the stats comprise. Redundant with annotations rather than additive.

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?

Very short and front-loaded: one functional sentence plus a route marker. Nothing is padded, though the '[READ] GET /api/...' line duplicates information already carried by the annotations, so it does not fully earn its place.

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 no output schema and no parameters, the description is the only place to say what this endpoint actually returns (counts, buckets, aggregation window). It says nothing about the shape or scope of the stats, leaving a real gap for a stats-reporting tool.

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?

The tool takes zero parameters, so the baseline of 4 applies per the rubric. Nothing in the description could or needs to add parameter meaning, and the empty schema is fully consistent with the description.

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 restates the tool name almost verbatim ('Get subscription request history stats') and adds only the raw HTTP route. It identifies the resource but never explains what the statistics represent or how they differ from the sibling get_subscription_request_history and get_user_subscription_request_history. Minimum-viable rather than genuinely clarifying.

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?

There is no guidance on when to use this tool versus the plainly related siblings (get_subscription_request_history, get_user_subscription_request_history, get_stats_digest). No prerequisites, no exclusions, no context. The agent must infer usage entirely from the name.

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