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

With no annotations, the description carries full responsibility for disclosing behavioral effects. It only says 'disable', which is minimal and slightly inconsistent with the tool name 'delete'. It does not disclose side effects, reversibility, impact on existing deliveries, or any required permissions.

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 a single, front-loaded sentence with no redundant content. It is concise but under-specified; there is no padding, though the brevity leaves meaningful gaps.

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 destructive, one-parameter operation with no annotations and no output schema, this description leaves gaps: no guidance on how to retrieve webhookId, no expected response, and no clarity on whether 'disable' means the same as 'delete'. The operation is trivial in complexity, but the surrounding operational context is still too thin.

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 schema has one required string parameter, webhookId, with 0% description coverage, and the tool description adds no additional meaning beyond the parameter name. The description does not explain where webhookId comes from, its format, or how it relates to the webhook creation/list tools. The parameter is simple, but the description provides essentially no semantic help beyond the schema.

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 clear action, 'Disable', and a specific resource, 'an email webhook'. It is distinct from the sibling create/list/deliveries tools, though it does not explicitly contrast itself with them. The verb 'disable' also introduces slight ambiguity relative to the tool name 'delete', but the overall purpose is understandable.

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 about when to use this tool versus inbox_webhook_create, inbox_webhook_list, or inbox_webhook_deliveries_list. There are no prerequisites, no mention of how to obtain a webhookId, and no note about whether the action is reversible or permanent. The agent must infer usage entirely from the tool name and siblings.

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