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

With no annotations, the description carries the full burden and does so well: idempotency ('re-acking is safe'), batch limits (1-100 per call), default endpoint behavior, the redelivery-thwarting effect, and the meaning of each status code including which indicate a wrong id or bot identity.

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?

Front-loaded with the action and effect, then usage rule, then parameter guidance, then the status-code decoding. Dense but every clause is actionable; the status list substitutes for the absent output schema.

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 2-param, no-annotation, no-output-schema tool, the description supplies everything needed: purpose, when to call, batch bound, URL handling, and return-code interpretation. Nothing an agent needs to invoke or react correctly is missing.

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 0%, so the description must compensate, and it does: eventIds is scoped (1-100 per call), and ackUrl is explained as the delivery's ack URL with a stated default ingress path. Both parameters gain meaning not present in the schema.

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 (acknowledge) and resource (QA-bot webhook events) with the operational consequence (stops TestChimp from redelivering). It is unmistakably the write-side counterpart to the get-bot-*/register-bot-profile siblings.

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 instructs to ack every event handled OR deliberately ignored, including expired/irrelevant ones, and notes that re-acking is safe. It also names the fallback condition for ackUrl ('pass when present'). No ambiguity about when to call it.

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