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

The annotations already declare readOnlyHint=true, so 'Read-only' is a repetition of structured data rather than new information. It adds only the account-wide listing scope and the 'GET /webhooks' endpoint, but discloses nothing about pagination behavior or return shape beyond what the schema already provides.

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 short clauses, front-loaded with the purpose and no wasted preamble. The trailing 'GET /webhooks' is redundant REST detail that a tool caller cannot act on, which mildly dilutes the otherwise efficient structure.

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 simple read-only list endpoint with annotations covering safety, a fully described schema, and no output schema requirement, the description covers purpose, scope, and filter adequately. Additional pagination guidance would be the only marginal improvement.

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 three parameters (events, pageSize, currentPage) are already documented with examples and defaults. The description merely echoes the event filter and adds no syntax or format detail beyond the schema, so the baseline 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?

States a specific verb (List) and resource (webhooks) plus the scope ('configured in the account') and the optional filter dimension. No sibling in the provided list competes with the webhooks resource, so an agent can identify this tool unambiguously.

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?

The description implies when the tool is used ('List webhooks configured in the account, optionally filtered by event name') but gives no explicit when-to-use versus alternatives, no prerequisites, and no pointer to related tools such as a create/delete webhook counterpart.

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