create_sender_id

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

No annotations provided. Description only mentions authentication requirement (X-API-VASKEY). Does not disclose side effects, idempotency, conflicts, or response 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?

Description is one line with endpoint info and requirement. Front-loaded but could benefit from clearer structure (e.g., bullet points for requirements). 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?

No output schema, complex nested objects, and many sibling tools. Description is too brief; does not explain return format, success/error behavior, or rate limits. Incomplete for complex tool.

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 67%. Description adds no new meaning beyond the schema; it restates the endpoint and 'type 3' which is already in schema. Baseline score of 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 the action (Request a new Sender ID) and resource. It distinguishes from sibling tools like list_sender_ids (list) and approve_sender_id (approve).

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?

No guidance on when to use or when not to use this tool versus alternatives. Only prerequisite (X-API-VASKEY) is mentioned, but not context for selection.

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