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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false and non-destructive, so the safety profile is fully covered structurally. The description adds nothing behavioral beyond the endpoint string — no note on pagination, date-range defaults, or what an empty result means — so it contributes almost no context over the annotations.

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?

It is short, but wasteful: the same endpoint string is duplicated verbatim, and the operation-ID sentence is machine noise rather than agent-usable information. Nothing is front-loaded that explains the call's effect.

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 listing endpoint with a free-form nested query object, no output schema, and 0% parameter coverage, the description leaves an agent unable to construct a correct request or anticipate the response. The deferral to describe_operation is the only completeness support.

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 0% and both parameters ('query' as an open additionalProperties object, 'params' with no defined properties) are entirely undocumented. The description does not compensate: it only defers to describe_operation instead of explaining what query filters are accepted.

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 only repeats the HTTP path 'GET /api/calendar/events' twice; it names a resource (calendar events) but restates the name/title rather than describing what the call returns or does. It gives an agent no plain-language statement of purpose or any distinguishing feature versus the many calendar/site/event siblings.

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 when-to-use or when-not-to-use guidance. The single useful token is the pointer that 'describe_operation provides native request schemas', which hints at a companion tool, but it doesn't say when to pick this endpoint over get_calendar_payments or get_dashboard_upcoming_events.

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