Create a webhook.

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

Annotations already declare this is a non-read-only, destructive, non-idempotent, open-world mutation, so the safety bar is partially met by structured fields. However, the description adds nothing on top — no mention of the confirm flag requirement, the payload/payload_file/body-flag mutual exclusion, account scoping, or that creating a webhook is irreversible.

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?

At four words it is not bloated, but it is under-specified rather than concise — the single sentence carries no load and repeats the title. Nothing is front-loaded because nothing is stated.

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 7-parameter destructive mutation with a nested object body, mutually exclusive input modes (payload vs. body flags vs. payload_file), a confirm safeguard, and no output schema, a title-only description is completely inadequate. An agent cannot safely invoke this tool from the definition alone.

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%, so all seven parameters (including the nested payload body, confirm, account, and payload_file) are documented in the schema itself. The description contributes zero additional meaning, so the baseline 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?

Tautological: description restates name/title.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as update_webhook for modifying an existing webhook. The agent must infer everything 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.