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

Annotations already declare readOnly=true, idempotent=true, and non-destructive, so the safety profile is covered. The description adds the meaningful fact that access can be token-based for anonymous resources, but says nothing about what the captured requests include, their ordering, or any pagination/limit behavior.

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 and resource come first and the access mechanism follows. Nothing could be removed without losing information.

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 two-parameter read tool with rich annotations and no output schema, the description covers what it does and how access works. The remaining gap is what the returned request capture looks like, but the annotations carry most of the behavioral weight here.

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 coverage is 100%, with the schema itself explaining both 'id' (resource UUID) and 'token' (omit for workspace-owned resources). The description echoes the token concept but adds no format or convention detail beyond what the schema already states, 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 names a specific verb ('Read') and resource ('webhook inbox and captured requests'), which clearly separates it from create_webhook_inbox and delete_webhook_inbox. It stops short of an explicit contrast with wait_for_webhook, which is the closest sibling an agent could confuse it with.

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 phrase 'using its private token' implicitly signals the anonymous-resource inspection scenario, but there is no explicit when-to-use rule, no mention of when not to use it, and no pointer to wait_for_webhook as the alternative for blocking on new deliveries.

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