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

The annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered elsewhere. The description adds nothing beyond that: it does not say what is destroyed, whether existing delivery configuration is erased permanently, or what happens when no webhook exists.

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?

A single short sentence with the action front-loaded and zero filler. It is efficient but arguably under-specified rather than deliberately concise, which keeps it from a 5.

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 one-parameter, no-output-schema mutation tool whose annotations already carry the destructive/idempotent profile, minimal prose is defensible. Still, an agent would benefit from knowing the post-deletion state (deliveries stopped, idempotent behavior on a missing webhook), which the description omits.

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 single agent_key parameter is fully documented in the schema, including the recommended omission when Authorization is sent. The description adds no meaning beyond that, 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?

The description states a specific verb ('Remove') and resource ('your webhook'), which is enough to tell it apart from get_webhook, set_webhook and test_webhook by verb alone. It stops short of explicitly contrasting with those siblings or stating scope (per-agent vs global), so it is clear but not maximally differentiated.

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 mention of prerequisites (e.g. that a webhook must already be configured), and no routing to alternatives such as set_webhook for replacement. The agent must infer that this is the teardown counterpart to set_webhook.

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