create_webhook

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

With no annotations provided, the description carries the full burden of behavioral disclosure. 'Register' implies creation, but it does not disclose potential side effects (e.g., active webhook immediately), authentication requirements, rate limits, or any other behavioral context beyond the bare action.

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 very concise, consisting of a single sentence, but it is under-specifying rather than efficiently structured. It does not front-load critical information about what constitutes a valid webhook, and while brief, it lacks the substance needed to be considered well-structured.

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?

Given that there are no annotations, no output schema, and a sparse description, the tool is incomplete for an agent to use correctly. It does not explain the event names allowed, how the webhook is validated, or what response to expect. This is inadequate for a creation tool with minimal supporting context.

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 defines parameter names and types but includes no descriptions for them. The tool description adds no meaning to 'url', 'events', or 'description' beyond their schema definitions. With 0% schema description coverage, the description should compensate but does not, leaving the agent without semantic understanding of what each parameter represents.

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 'Register a webhook endpoint' clearly states the verb (register) and resource (webhook endpoint), making the tool's purpose understandable. It is distinct from siblings like update_webhook or delete_webhook, though not explicitly contrasted.

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?

No guidance is provided on when to use this tool versus alternatives, nor any conditions or prerequisites. The description does not mention exclusions or scenarios where another tool might be more appropriate, leaving the agent to infer usage from the name alone.

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