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

Annotations only cover the safety profile (readOnlyHint=false, openWorldHint=true, destructiveHint=false). The description adds real behavioral value beyond them: request persistence ("Every request is stored") and the 24-hour expiry with its hello.new exception. It does not mention auth or rate-limit behavior, keeping it short of a 5.

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?

Three short sentences, zero filler. The core capability is front-loaded, followed by the reading path and the expiry caveat in priority order.

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 description covers the essentials an agent needs: what the tool produces, where the output surfaces (read_webhook_requests), and the lifetime constraint. Nothing material 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 description coverage is 100%, so both parameters are already documented in the schema, including the expiry default and the note field. The description's expiry statement merely echoes the schema, adding no new syntax or constraint detail. Baseline 3 applies.

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 concrete verb+resource ("Make a URL") and clarifies the mechanism with examples ("Stripe, GitHub, a form, a cron job"). It is clearly distinguishable from create_upload_link by describing an inbound-callable endpoint, though it never names that sibling 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?

Gives strong usage context: the URL is meant to be called by external services, and requests are consumed via read_webhook_requests, which routes the agent to the right companion tool. It stops short of stating when NOT to use this versus create_upload_link.

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