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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered without the description. The description usefully adds what a webhook record contains, but says nothing about pagination, ordering, or whether disabled/inactive hooks are included — gaps that matter for a listing tool.

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 front-loaded sentence with no filler. The verb, resource, scope, and returned payload are all packed in without repetition of the title.

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 no-parameter, read-only list tool with annotations covering safety and no output schema, the description is nearly complete — it even describes the return fields in lieu of an output schema. The only missing piece is pagination/ordering behavior on large webhook lists.

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 tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline of 4 applies. The mention of returned fields is a small bonus rather than parameter guidance.

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 (List) and resource (webhooks) and adds scope ('all configured') plus the fields returned (status, events, last trigger time). It implicitly separates itself from the singular get_webhook sibling, but never names it explicitly, so the differentiation is left to inference.

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?

Usage is only implied: 'List all configured webhooks' suggests enumeration, but there is no explicit when-to-use, when-not-to-use, or pointer to the alternatives (get_webhook for a single hook, create_webhook/delete_webhook/update_webhook for other lifecycle operations). An agent can guess the context but is not guided.

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