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

Beyond the annotations, the description discloses the two-call confirmation pattern, the fact that the first call changes nothing, argument validation behavior, the required permission, and the returned confirm_token. These are exactly the behavioral details an agent needs for a destructive, non-idempotent mutation.

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 short, front-loaded, and every sentence contributes either the action, permission requirement, or the two-step confirmation workflow. There is no redundant restatement of the schema.

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 destructive mutation with no output schema, the description covers the critical workflow, safety stop, permission, and validation behavior. It could be slightly more complete by mentioning the optimistic-concurrency role of expected_updated_at, but that is documented in the schema.

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 67%, and the description adds meaningful semantics for confirm_token by explaining that it comes from the first call and must accompany the second call with the same arguments. It does not explain expected_updated_at, but the schema already documents that parameter adequately.

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 clearly states a specific verb and resource: declining a request. It is readily distinguishable from accept_request by name, but it does not explicitly discuss nearby alternatives such as reject_offer or decline_extension.

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?

It gives clear procedural guidance: make a first non-mutating call, show the summary to the person, and only proceed after agreement. It does not explicitly say when to choose this over accepting or rejecting other related requests, but the workflow context is strong.

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