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

Discloses critical behavior: secret returned only once, auto-suffix for taken handles, and via attribution. Annotations are all false, so description adds value. However, idempotency and error handling are not covered.

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?

Highly concise, front-loaded with essential purpose and one-time secret. Every sentence adds value, no wasted words.

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?

Covers key aspects: registration process, secret return, handle uniqueness, auto-suffix, via. No output schema provided, so return value not detailed. Missing details on re-registration or error states, but adequate for typical use.

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 covers all 6 parameters with descriptions (100% coverage). Description adds minor context like 'free suggestion' for taken handle and auto_suffix behavior, but largely reiterates schema.

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?

Clearly describes registering a handle as identity, with specific details about returning a secret and use for resume. Distinguishes from siblings like identity and resume.

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?

Implies use for first-time registration, mentions via for invitations, and hints at resume using the secret. Does not explicitly exclude alternatives or state when not to use, but context is clear.

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