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

Annotations declare destructiveHint=true, but the description adds far more: the exact readiness preconditions (one task, each task with a step, at least one tester) and the failure behavior ("fails with the missing piece and nothing changes"). It also discloses side effects on confirm — pending invitations emailed, opt-in link goes live, ticket prefix auto-generated — and that tokens are single-use and expire in minutes.

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 core action and preconditions before side effects and the confirmation protocol, and every sentence carries operational information. The two-step token explanation slightly duplicates the confirmationToken schema description, but the repetition is defensible for a destructive tool.

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 destructive, no-output-schema mutation tool, the description covers preconditions, failure modes, side effects, alternatives, and the confirmation handshake. An agent has everything needed to call it safely without inferring anything from annotations alone.

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 100%, so the baseline is 3, and the description adds behavioral meaning beyond the schema: startAt governs when testers can begin, and endAt bounds the run window. It does not, however, clarify the productId/beta-project naming mismatch present in the schema description.

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?

Opens with a specific verb and resource: "Schedule this draft beta project to run between startAt and endAt." It immediately distinguishes itself from siblings by naming launchBeta for immediate starts and updateBetaDetails for the ticket prefix, so an agent can route correctly without opening 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 explicit when-to-use and when-not-to-use guidance: use launchBeta to start a published beta immediately, use updateBetaDetails beforehand to set the ticket code prefix, and testers only start once startAt is reached. It also spells out the required two-call confirmation protocol step by step.

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