Create Identity

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

No contradiction with annotations. Adds value by noting that returned summaries redact sensitive identity fields and hidden custom fields, which goes beyond the annotations that only indicate non-read-only and non-destructive behavior.

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?

Three concise sentences with front-loaded action and purpose. No unnecessary words; each sentence adds distinct value.

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 create tool with complex nested objects, the description covers purpose, usage, and behavioral details (redaction). Lacks return value or error description, but output schema is absent so some gaps are acceptable.

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 coverage is 100% with detailed parameter descriptions. Description rephrases but does not add new meaning beyond the schema, such as explaining the structured identity object or custom fields. Baseline 3 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?

Description clearly states 'Create an identity item' with a specific verb and resource, and explicitly distinguishes it from login or card items, which aligns with sibling tools like keychain_create_login and keychain_create_card.

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?

Explicitly states when to use ('for personal, contact, and address data') and when not to ('instead of a login or card'), providing clear context. However, it does not mention other sibling tools like SSH key or note.

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