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 the useful detail that the date window is fully optional, but it says nothing about response size, aggregation granularity, time-zone handling, or whether the result is paginated — context that matters for a report tool with no output schema.

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 short sentences, front-loaded with the purpose and metric definition before the optionality note. The trailing REST endpoint reference ("GET /reports/response_time") is arguably noise for an agent selecting a tool, but it is a minor, cheap addition.

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 simple, read-only, zero-required-parameter report, the description covers purpose, the metric definition, and optionality of inputs. With no output schema present, it does not describe the returned shape or units of the response time, which is the main remaining gap.

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%, and both parameters carry ISO8601 format examples, so the schema does the heavy lifting. The description only restates optionality of the two dates, adding no format or semantic detail 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?

States a specific verb and resource ("get the response-time report") and defines the metric parenthetically as "how quickly conversations were answered," which removes ambiguity about what the report contains. It does not, however, distinguish itself from the sibling reamaze_report_volume beyond the name, so an agent must infer the difference.

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 says "Both dates optional" but gives no when-to-use guidance, no prerequisites, and no mention of the sibling report_volume as the alternative for a different metric. The caller can guess it's for measuring agent/team responsiveness, but nothing is stated explicitly.

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