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

The description discloses key behavioral details beyond the annotations: the mandate is re-authorized at approval time, approval refuses if the mandate expired or was revoked while waiting, and Bearer JWT authorization is required. This goes well beyond the readOnlyHint/destructiveHint flags and adds genuinely important runtime semantics.

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 three compact sentences, each providing distinct value: what the tool does, the important re-authorization/refusal behavior, and the authentication requirement. It is front-loaded and contains no fluff.

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?

For a single-parameter tool with full schema coverage and no nested objects or output schema, the description covers the core action, auth requirement, and an important failure mode. It does not explicitly describe the success response or side effects after approval, but the tool is simple enough that this is a minor gap.

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 input schema already fully documents request_id as 'The request uuid, from signet_status', with 100% schema description coverage. The tool description does not add further parameter-specific meaning, so the baseline score of 3 is appropriate.

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 action: approve a pending action request, specifically one that a mandate with require_approval:true escalated. It also scopes the operation to the caller's own requests and distinguishes it from sibling approve/deny/status tools by focusing on the approval action.

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?

It provides a clear context for use: approving your pending mandate-escalated requests, and it includes the required Authorization Bearer JWT. It does not explicitly mention alternatives like signet_deny or signet_status, but the context is unambiguous enough for an agent to select this tool.

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