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

No annotations are provided, so the description carries the full burden. It usefully discloses visibility behavior ('others see when they meet you'), which tells the agent the bio is public-facing. However, it omits whether the new value replaces the existing bio entirely, any rate limits, and the auth context implied by the token parameter.

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?

A single front-loaded sentence with no filler; the core action and its effect are conveyed immediately.

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 small mutation tool with full schema coverage, no output schema, and no annotations, the description covers purpose and audience but leaves gaps on overwrite semantics and auth behavior. It is minimally adequate rather than complete.

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%, so the bad parameter ('Max 600 chars') and the optional token fallback are already documented in the schema. The description's phrase 'short self-description' is consistent with the length constraint but adds no syntax or format detail beyond it, which matches the baseline 3.

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 ('Change') and a precise resource ('the short self-description others see when they meet you'), making the target unambiguous. It does not name or contrast with any sibling tool, but the action is distinct enough that confusion with set_relationship_note or remember is unlikely.

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?

No guidance on when to use this instead of alternatives, and no prerequisites or preconditions are stated. Usage is only implied by the verb 'Change'.

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