twilio_send_verify

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

The description does not disclose that this is a write operation that initiates a one-time password send, requiring user confirmation via a separate verification tool. With no annotations, it should mention side effects, authentication requirements, or that it does not finalize verification itself.

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 a single, concise sentence of 12 words that front-loads the core purpose. It is efficient with no redundant or unnecessary information.

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 description lacks information about what the tool returns (e.g., a verification status or success indicator) since there is no output schema. It also does not mention that the tool creates a verification attempt or that the user must check the code using twilio_check_verify.

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 60% (3 of 5 parameters have descriptions). The description adds no additional meaning for account_sid and auth_token, which are left undocumented in both schema and description. For the other parameters, the schema already provides sufficient description.

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 it sends a verification code via Twilio Verify and lists supported channels (SMS, call, email, WhatsApp). This distinguishes it from sibling tools like twilio_send_sms which sends an SMS directly, and twilio_check_verify for checking verification codes.

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 like twilio_send_sms or twilio_check_verify. It does not mention prerequisites such as having a Twilio Verify Service SID, nor does it specify that a subsequent verification step is needed.

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