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

Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=false, but the description adds real value beyond them: a guard condition (refused while forms require verified respondents) and the fact that a human approval link is always returned, implying this is gated rather than immediate. It stops short of explaining what the approval link entails or the effect on respondents.

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?

Three short sentences, each carrying distinct information (action, precondition, return behavior), with no padding or repetition of the title.

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?

With an output schema present, return values need not be described, and the description still flags the always-returned approval link. The main remaining gap is the approval workflow itself (who grants it, whether the secret is deleted immediately or after approval), which matters for a destructiveHint operation.

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?

The tool takes zero parameters, so per the rubric the baseline is 4. There is nothing for the description to clarify on inputs, and it correctly does not invent any.

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?

States a specific verb and resource (disable identity verification by deleting the project identity secret), and the outcome is concrete rather than tautological. The enable/status siblings (fillo_enable_identity, fillo_identity_status) make the scope immediately clear without opening their schemas.

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?

Gives a genuine precondition: the call is refused while any form still requires verified respondents. However, it never names the alternatives (fillo_enable_identity, fillo_identity_status) or states when an agent should prefer to disable verification, so usage is inferred rather than guided.

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