create_webhook

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

With no annotations present, the description carries the full burden, yet it does add a genuinely valuable behavioral fact: the signing secret is returned only once and cannot be retrieved later. However, it omits permissions/auth requirements, whether the endpoint is active immediately, idempotency behavior, and what the default event set is.

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 zero filler; the core action is front-loaded and the return-value caveat follows immediately. Every sentence earns its place.

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 mutation tool with no annotations and no output schema, the description usefully flags the one-time secret but leaves the caller guessing about activation/verification, default events, and the shape of the returned endpoint object. Adequate but with clear gaps.

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% (url and events are both documented), so the schema already handles parameter meaning. The description adds no additional parameter detail such as valid event type values or URL constraints, 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?

States a specific verb (Create) and resource (webhook endpoint), clearly mapping to the endpoint concept. It does not explicitly name or differentiate from siblings like list_webhooks or delete_webhook, but the CRUD verb makes the distinction obvious 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?

The description gives no when-to-use guidance, no prerequisites, and no mention of alternatives (e.g., send_test_webhook_event to validate before creating). Usage is only inferable from the verb.

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