Create project API key

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

Annotations only declare readOnlyHint=false, destructiveHint=false, openWorldHint=false, which is sparse. The description adds meaningful context: 'The raw key is returned once' — a critical behavioral fact warning the agent that the secret cannot be retrieved again after creation. This is valuable transparency beyond the annotations.

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?

Two sentences, zero waste. 'Create a project-scoped API key for CI or automation' plus the critical one-time-return warning. Every sentence earns its place.

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?

The tool is a mutation (creates a resource) with no output schema, no enums, and moderate complexity (3 params). The description captures the essential purpose and the one-time-return caveat, but doesn't explain the idempotency_key semantics, what happens if creation fails/duplicates, or whether this key can be revoked via a sibling tool (revoke or list_project_api_keys). Given the annotation sparseness, a bit more context would help.

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 67% (2 of 3 params documented). The description mentions 'project-scoped' which implies project_id is required, and says 'raw key returned once' indicating creation semantics. However, it adds little beyond the schema for the two documented parameters, and idempotency_key (the one undocumented param) gets no additional explanation in the description despite being non-obvious in purpose.

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 verb+resource (create a project-scoped API key) and purpose (for CI or automation), which distinguishes it from 'create_api_key' (likely a general API key creator) and 'create_personal_token'. It doesn't explicitly call out sibling differentiation but the 'project-scoped' scoping does differentiate it.

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 states the key is for 'CI or automation' which gives some sense of when to use it, but it doesn't provide exclusions or explicitly mention alternatives like create_api_key or create_personal_token. No guidance on when NOT to use this tool versus the other key/token creation tools is given.

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