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

Annotations already flag destructiveHint=true and openWorldHint=true; the description adds real value beyond them by enumerating what the gated step may be (run a command, delete database data, Stripe change, publish) and stating that approve=false skips the step while the build continues. It does not cover error states (e.g., job not actually waiting) or whether the decision is reversible.

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 gating precondition is front-loaded in the first clause, followed by the two-branch outcome. It is dense but every clause carries meaning; minor cost is that it reads as one long sentence rather than cleanly separated guidance.

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 no explanation, and the two-parameter surface is essentially covered. The remaining gap is failure/edge behavior — what happens if the job is not actually awaiting confirmation — but the core decision semantics are complete.

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 coverage is 50%: job_id is documented in the schema, but the approve boolean has no description there. The description fills exactly that gap by explaining approve true = proceed and false = skip the step and continue the build, which is the semantics an agent most needs.

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 action (answer a pending WebTwizz build gate with approve true/false) and anchors it to the UI signal 'WebTwizz needs your OK'. It is clearly distinguishable from read-only siblings like get-job-status, though it never names those siblings explicitly.

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?

Strong precondition: 'Use this only after the user clearly answers what a WebTwizz build is waiting on' tells the agent both when to call and when not to (i.e., do not call preemptively). It lacks explicit routing to alternatives such as get-job-status or stop-build, so it stops short of a 5.

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