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

Annotations already flag readOnlyHint=true and destructiveHint=false, so the safety profile is established. The description adds valuable behavioral context: it explicitly requires Authorization: Bearer <JWT>, and it notes that the state is volatile, emphasizing that results are only valid at call time. These go beyond the annotations, though the description does not detail the exact JSON response structure (e.g., fields for 'where'). Still, it provides meaningful extra behavioral disclosure.

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 moderately long but every sentence earns its place: it covers the tool's function, the returned data, when to call, the dynamic state caveat, and authentication. It is front-loaded with the core purpose and ends with the auth requirement. Slightly more verbose than necessary, but well-structured and not wasteful.

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?

Given there is no output schema, the description does an excellent job of explaining what the agent can expect: done/total count, per-step booleans and completion location, and a single 'next' step. It also provides usage timing and auth requirements that aren't captured elsewhere. For a zero-parameter read-only tool, this description is complete for correct invocation and interpretation.

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 tool has zero parameters and the schema is an empty object (100% coverage). There is nothing for the description to clarify about parameters. Under the baseline for 0 params (score 4), the description correctly omits parameter-related detail and focuses on the return payload and usage context, which is appropriate.

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 precise verb ('check'), a specific resource (the CALLER's profile setup), and enumerates the concrete steps tracked (display name, handle, photo, bio+link). It clearly conveys what the tool returns (done/total, per-step status with completion location, and a next step). This distinguishes it from sibling tools like page_get or page_me, which address other profile aspects.

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 gives explicit guidance on when to call this tool: before declaring a profile complete and before sending setup nudges. It also warns that the state changes dynamically, so the agent must never rely on memory. This is actionable and leaves no ambiguity about appropriate invocation.

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