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

Annotations already declare it is a non-read-only, non-destructive, non-idempotent, closed-world operation, so the safety bar is lower. The description usefully adds the delivery-to-helpdesk side effect, but omits auth requirements (the authorization parameter), what happens on an invalid code, and whether re-verification is safe.

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?

A single front-loaded sentence with zero filler, with the core action stated first. It is arguably too terse for a two-part nested input, but it is not padded.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. However, the workflow prerequisite (getting challenge_id from start_inquiry) and the authorization requirement are absent, leaving the agent without enough to invoke the tool correctly in sequence.

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 0%, so the description carries the full burden. It clarifies that code is 6 digits, matching the min/maxLength constraint, but says nothing about challenge_id (a UUID tying to the start_inquiry challenge) or the authorization parameter, leaving half the input unexplained.

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 gives a specific verb (verify) plus the resource (the 6-digit code / the inquiry) and adds a concrete effect (delivering to the helpdesk inbox). It is clearly distinguishable from start_inquiry, though it does not name that sibling explicitly to disambiguate a paired start/verify flow.

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?

There is no statement of when to use this versus the many verify_* siblings (verify_registration, verify_device_login, verify_account_registration) or start_inquiry. The prerequisite that a challenge_id must first come from start_inquiry is left entirely to inference.

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