twilio_check_verify

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

With no annotations provided, the description must disclose behavioral traits. It does not mention whether the check is read-only, if it consumes the code, or what side effects occur (e.g., marking as verified). Authentication requirements are implicit in the schema but not explained.

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 extremely concise (one short sentence) with no wasted words, but it lacks structure and depth. It is appropriately short but borderline under-specified.

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 tool has 5 required parameters, no output schema, and no annotations, the description is too minimal. It does not explain the return value (e.g., whether verification succeeded, error messages), leaving the agent without critical information to act on the result.

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 only 20% (only 'code' has a description). The description adds no additional meaning for the other 4 parameters (account_sid, auth_token, service_sid, to) beyond what is in the schema, which is insufficient for such low coverage.

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 'Check' and the resource 'a verification code submitted by a user via Twilio Verify,' distinguishing it from sibling tools like twilio_send_verify. However, it could be more specific about what 'check' entails (e.g., validation status or result).

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 this tool versus alternatives. For example, it does not mention that this should be used after sending a verification code via twilio_send_verify, nor does it provide any context on prerequisites or exclusions.

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