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

Annotations supply readOnlyHint=true, so the safety profile is already covered; the description adds genuine value beyond that by naming the underlying endpoint (GET /webhook.json) and the response envelope shape { valid, page_stats, data }. It omits auth requirements and pagination semantics (whether page_stats implies finite paging), keeping it below a 5.

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?

Three terse sentences with zero filler: purpose, endpoint, return shape, in that order. Nothing is redundant or buried.

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?

With no output schema, the description usefully supplies the return envelope, and the readOnly annotation covers safety. What's missing for full completeness is auth/permission context and whether the free-form params object supports pagination cursors beyond _page.

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 both parameters (_page and params) are already documented in the schema, which sets the baseline at 3. The description mentions page_stats in the return value but adds no filter/operator syntax guidance for the free-form 'params' object, so it does not exceed the baseline.

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 and resource ('List configured webhooks'), which is unambiguous and distinct from all listed siblings — none of them deal with webhooks. It does not, however, distinguish itself from the generic knowledgeowl_request escape hatch, so it stops short of a 5.

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 explicit guidance on when to use this versus knowledgeowl_request, nor any prerequisites (auth scope, whether webhooks must be enabled). Usage is only implied by the verb 'List'.

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