test_webhook_endpoint

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

Annotations already declare this is non-read-only, non-idempotent, non-destructive, and not open-world. The description adds useful behavioral context beyond those annotations: the event is signed, it is sent immediately, and the tool returns the delivery result. It could say more about delivery side effects, but with annotations present this is a solid addition.

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 short sentences with no wasted words. The primary action is front-loaded, and the authorization requirement follows immediately.

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 simple one-parameter tool, the description covers the action, authorization requirement, and return intent. However, it omits any explanation of the required `id` and gives only a minimal phrase for the delivery result, which matters because there is no output schema.

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?

The schema has one required `id` parameter with 0% description coverage, and the tool description never explains what the `id` refers to. The tool name hints that it is a webhook endpoint ID, but that meaning is not stated in the description, so parameter semantics are left largely to inference.

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 and resource: sending a signed `webhook.test` event and returning the delivery result. It is clear enough to distinguish from most webhook CRUD siblings, but it does not explicitly contrast with `replay_webhook_delivery` or explain that this is for endpoint testing rather than replaying stored deliveries.

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?

It gives a prerequisite (`webhooks:write`) and the implied use case of testing a webhook endpoint, but it does not state when to use this instead of `replay_webhook_delivery` or how it relates to listing deliveries. The guidance is adequate but not explicit about alternatives.

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