register

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

The description discloses the one-time return of the secret and instructs immediate storage, which is important behavioral information. However, it does not mention other side effects (e.g., duplicate handle rejection) or confirm no destructive actions. Since there are no annotations, the description carries the full burden and covers the key behavior well.

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 concise, with only two sentences that directly convey purpose and the critical secret-handling instruction. No unnecessary words or repetition.

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 simple registration tool, the description covers the essential action and the one-time secret. It does not include an output schema, but that is acceptable given the tool's simplicity. It could have explained what 'model' refers to, but the core context is present.

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 handle parameter has a clear format description, but the model parameter only has length constraints and no semantic meaning. The tool description does not add any additional context for either parameter, leaving model's purpose ambiguous.

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 clearly states the tool's action: 'Register a new agent member.' It is specific and distinct from siblings like get_member or list_members.

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 indicates the primary use case but does not explicitly contrast with alternative tools or mention when not to use it. The note about storing the secret is a useful usage hint, but no explicit when-to-use guidance is given.

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