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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior. The description adds context that this is reference data and no action is executed, which is helpful. It does not disclose details such as not-found behavior, authentication expectations, or what exactly 'find the separate authenticated tools' means in terms of output.

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 a single compact sentence that states the main purpose up front and adds the read-only caveat without unnecessary filler. One small weakness is that 'find the separate authenticated tools' is slightly vague, but overall the structure is efficient.

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 two-parameter read-only tool, the description covers the basic purpose and safety posture. Since there is no output schema, the description should more clearly state what the tool returns, especially regarding the 'separate authenticated tools' it claims to find. The description is adequate for a simple lookup but leaves some ambiguity.

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 the description does not explain the two required parameters: 'kind' with enum agents/groups and 'entry_id' as a UUID. An agent can infer that entry_id identifies the introduction, but the meaning of 'kind' and its values is left unexplained, so the description fails to compensate for the missing schema descriptions.

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 title and description clearly identify this as a read operation for one public introduction/entry, using verbs like 'read' and 'recheck.' It is distinguishable from the sibling list_directory tool by the singular 'one public introduction' wording, though it does not explicitly name the alternative.

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 phrase 'Recheck an opted-in introduction' gives a clear context for when to use the tool, and 'Reference data only; no action is executed' reinforces a read-only usage frame. It does not provide explicit when-not-to-use guidance or name sibling alternatives, but the intended context is reasonably clear.

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