Create a phone

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

No annotations are provided, so the description carries full burden. It only mentions the HTTP method and tag, but fails to disclose that this is a mutation that creates a new phone record, potential idempotency issues, or required permissions. Minimal behavioral insight.

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 very short (one sentence plus tags), but this conciseness sacrifices clarity and completeness. It is not front-loaded with the most critical information for selection.

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?

Given the simple tool and many siblings, the description is incomplete: it doesn't explain the role of contactsId, the expected return, or how it differs from weeek_create_a_phone. No output schema is provided.

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 0%, but the description adds no parameter details (e.g., format of phone, requirement of contactsId). It only says 'Body: application/json' which adds technical context but not meaning beyond schema structure.

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 'Create a phone' and provides the endpoint, indicating it creates a phone resource associated with a contact. The verb and resource are specific, but it doesn't differentiate from the sibling tool weeek_create_a_phone.

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 is given on when to use this tool versus alternatives like weeek_create_a_phone or weeek_update_the_phone_2. The context of needing a valid contactsId is implied but not stated.

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