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

The description simply restates the destructive action already signaled by the destructiveHint annotation. It does not disclose side effects, irreversibility, error behavior, or any preconditions beyond having an ID.

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?

One sentence, front-loaded with the verb and object, zero filler. It is as concise as the operation requires.

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?

The annotation flags destructive behavior and the schema fully defines the single parameter McDowell. Still, it does not state irreversibility, required preconditions (e.g., obtaining the ID via list), or effect on active delivery. For a destructive operation, some caveat would help.

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 coverage is 100% and the single id parameter is documented in the schema with type, required, format, and description. The description adds no extra parameter meaning, but there is little missing for a simple delete-by-ID.

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 ('delete'), the resource ('webhook subscription'), and the required mechanism ('by ID'). The operation is unambiguous and clearly distinct from sibling tools like list/get/test/save.

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 given on when to use this tool versus alternatives, prerequisites (e.g., needing an existing ID), or consequences such as whether deletion is permanent. The intended use is only implied by the name and description.

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