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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false. The description adds useful behavioral context beyond those annotations: it explains exactly what is returned and clarifies that registration cannot be submitted through this server. It does not discuss caching or rate limits, but the added context is meaningful.

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 front-loaded with the format and return content, then adds the important limitation about registration. It is compact and mostly free of waste, though the final 'Read-only' sentence slightly repeats the readOnlyHint annotation.

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 zero-parameter schema-retrieval tool with an output schema, the description is complete. It identifies the format, the two representations returned, the prompt source, and the key limitation that the server cannot submit registration.

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, so there is no parameter semantics to explain. The baseline for a parameterless tool is 4, and the description does not need to compensate for any schema gaps.

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 specific resource and return content: the agentcv.team.v1 JSON Schema as an object, the exact schema text, and the registration prompt. It clearly distinguishes this from submission by noting that registration is done by a person and the server cannot submit anything. It does not explicitly differentiate from siblings such as validate_team_profile, so it falls short of a 5.

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 implies the tool is used to obtain the format before writing a team profile, and it explicitly says the server cannot submit registration. However, it does not name alternatives or state when to use validate_team_profile versus this schema tool. Usage guidance is therefore present but incomplete.

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