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

No annotations are provided, so the description carries the full behavioral burden. It mentions return values ('session summary' and 'ghost'), but does not disclose whether ending the visit is reversible, what side effects occur, or whether any authentication/eligibility conditions apply. The phrase about the 'ghost the room wrote of you' is evocative but not operationally clarifying.

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 short and front-loaded, beginning with the core action. The second sentence adds return-value context, though the poetic 'ghost' phrasing is less precise than a direct statement. Overall, there is little wasted text.

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 tool with a required identifier and no annotations or output schema, the description is incomplete. It omits any explanation of visit_id, does not state side effects or termination semantics, and leaves the returned 'ghost' undefined. It provides some return context but not enough for confident invocation.

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 schema has one required parameter, visit_id, with 0% description coverage, and the tool description never explains or even mentions visit_id. With low schema coverage, the description needed to compensate by clarifying the parameter's meaning, format, or source, which it does not do.

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 states a clear verb and resource: 'End the visit.' It is understandable in isolation, but it does not differentiate from sibling tools such as symposium_checkout, which could plausibly also end a visit. No sibling-specific routing is provided.

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 explicit guidance on when to use this tool versus alternatives like symposium_checkout or symposium_enter. The implied usage is 'when you want to leave,' but no prerequisites, exclusions, or alternative conditions are stated.

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