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

Annotations are all false/noncommittal, so the description carries the burden. It discloses that a fail verdict triggers a requeue with the note, and the request_token schema description adds that the token is one-time and holder-only. This is meaningful behavioral context beyond the minimal annotations.

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?

Two efficiently written sentences. The core purpose is front-loaded ('after the build shipped, test our_url and say pass or fail'), and the consequence is stated in the second sentence without fluff or redundancies.

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 4-parameter tool with 100% schema coverage and no output schema, the description covers the workflow trigger and the key effect of a fail verdict. Minor gaps remain (e.g., what happens on a pass, whether verdicts can be revised), but nothing blocks correct invocation.

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 100%, so the baseline is 3. The description reinforces the meaning of 'note' by mentioning it in the fail-requeue flow and reinforces 'verdict' by saying pass or fail. It adds little beyond the schema's already complete parameter descriptions.

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 states a specific verb and resource: after the build ships, test our_url and say pass or fail. It clearly positions this tool within the Build-it-Better workflow as the verdict-posting step, distinguishing it from siblings like bb_request_change or bb_accept_spec by its timing and 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?

Explicitly says when to use it: 'after the build shipped.' It also clarifies the consequence of a 'fail' (goes back to build queue), which helps an agent decide to call it post-shipping. No exclusions or alternatives are named, but the temporal context is clear enough.

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