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

Annotations already declare destructiveHint=true, idempotentHint=true, openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that — it does not mention the irreversible deletion of the endpoint, whether in-flight deliveries stop, or the preview/confirm workflow that the title hints at.

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?

It is one short sentence with no verbosity, but brevity here is under-specification rather than efficiency: the single sentence duplicates the tool name and front-loads nothing useful.

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?

Because the schema fully documents the two-step dry_run/confirm protocol and annotations carry destructiveness and idempotency, the agent can call this correctly despite the bare description. The remaining gap — no explicit instruction in the description to show the preview to the user before confirming — is partly covered by the confirm parameter's own text.

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% and the schema itself documents confirm, dry_run, and webhook_id in detail, including the intended preview-then-confirm sequence. The description adds no parameter meaning beyond the schema, so the 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?

"Delete a webhook" states a verb and a resource, but it is essentially a restatement of the tool name with no scope, no differentiation from toggle_webhook, update_webhook, or test_webhook, and no indication of what a webhook deletion entails. An agent knows the general action but nothing about boundaries.

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?

The description gives no when-to-use guidance, no prerequisites, and no alternatives. The genuinely useful routing information (preview with dry_run, then confirm) exists only inside the parameter descriptions, not in the description itself.

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