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 that both date filters are optional and cites the underlying REST endpoint, but says nothing about aggregation granularity, timezone handling, or output shape. Modest added value against an already-covered safety profile.

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?

Three short, front-loaded sentences with no filler. The purpose leads, the optionality constraint follows, and the REST endpoint is relegated to a trailing reference. Every sentence earns 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?

For a read-only, zero-required-parameter report tool there is little an agent needs beyond what is given, and 'counts over time' hints at the return shape absent an output schema. Remaining gaps are minor: no note on bucketing granularity or default window when dates are omitted.

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%, with both ISO8601 dates documented in the schema, so the baseline is 3. The description's 'Both dates optional' reinforces requiredness but adds no format or semantic detail beyond what the schema already provides.

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 conversation-volume report (counts over time).' The parenthetical defines the metric, which helps distinguish it from reamaze_report_response_time, though the distinction is only implied by the metric name rather than called out. An agent can identify what it does without opening the schema.

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 note 'Both dates optional' tells the agent the call is valid with no arguments, which is useful invocation guidance. However, there is no explicit when-to-use instruction and no mention of the sibling report tool (response_time), so the agent must infer which report to pick.

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