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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world behavior. The description adds that the response includes a 'challenge,' which is a useful output-related trait beyond the annotations. However, it does not disclose authentication requirements, rate limits, or any other behavioral context beyond what the annotations already provide.

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 phrase with no wasted words. It is appropriately brief, though its extreme terseness borders on under-specification for a tool with undocumented parameters. Still, it avoids any filler or redundancy.

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 tool with two fully undocumented required parameters and no output schema, the description should explain what hookId means, why managementToken is needed, and ideally what the returned status and challenge represent. It only gestures at the return content ('challenge') without clarifying parameters or usage context. Annotations cover safety, but the description leaves significant gaps for correct invocation.

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 two required parameters with 0% description coverage, and the description does not mention hookId or managementToken at all. An agent receives no help understanding that hookId identifies the destination or that managementToken is an authentication credential. The description fails to compensate for the complete lack of parameter documentation.

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 clear read verb and the specific resource: verification/revocation status and challenge. It distinguishes itself from action-oriented siblings like verify_destination and revoke_destination by framing the operation as a read. However, it does not explicitly name the destination resource, so some inference is still required.

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 provides no when-to-use context, no prerequisites, and no alternatives. An agent must infer from the word 'Read' and the sibling names that this is a status-checking tool rather than a mutation or verification tool. There is no explicit guidance on when to call this instead of verify_destination or get_hook_delivery.

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