Contract Testing: Execute Webhook

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

Annotations already communicate that this is non-read-only, non-idempotent, and non-destructive. The description adds that this is a 'test execution,' implying a manual trigger with side effects but no data destruction. Still, it does not explain whether the webhook call is asynchronous, what external request is fired, or what a successful execution returns, and there is no output schema to fill that gap.

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 description is short, front-loaded with the primary action, and logically structured into action, toolset, and parameters. The Parameters block is redundant with the schema but harmless, and the overall length is appropriate for the tool's simplicity.

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 one-parameter tool, the essential invocation data is fully specified, and annotations cover the safety profile. However, with no output schema, the description leaves open what happens when the webhook is executed, whether it is synchronous, and how the agent should verify success. These are meaningful gaps, but minor given the simplicity of the call.

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 input schema already fully documents webhookId with the same description ('UUID of the webhook'), and the tool description repeats it verbatim without adding format, source, or lookup guidance. Since schema description coverage is 100%, the baseline score of 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?

The description clearly states the action ('Trigger a test execution'), the resource ('a specific webhook'), and the toolset context ('Webhooks'). It is not a tautology and the singular scope is evident from the wording and parameter. However, it does not explicitly differentiate itself from the sibling tool contract-testing_test_execute_webhooks, so it falls short of full distinction.

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?

There is no explicit when-to-use or when-not-to-use guidance. The description does not mention alternatives, prerequisites, or when this should be chosen over other webhook-related tools such as contract-testing_list_webhooks or contract-testing_test_execute_webhooks. The 'Toolset: Webhooks' label provides context but no selection guidance.

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