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

Annotations already mark this as destructive and idempotent, and the description adds value by specifying the exact side effects: "releasing the provider booking and invalidating its scheduling links." It does not cover consequences like notifications or whether cancellation is reversible, so it stops short of 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?

The description is a single, front-loaded sentence with no filler. The core action comes first, and the behavioral effects follow in a compact clause.

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 five undocumented parameters and no output schema, the description is too thin. It omits what reason, skip_provider, request_id, and idempotency_key control, and provides no guidance on expected outcomes or response behavior.

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 0%, yet the description explains none of the five parameters. Only interview_session_id is inferable from the tool name; reason, request_id, skip_provider, and idempotency_key remain completely unexplained.

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 action and resource: "Cancel a scheduled interview session," and adds concrete effects. It is distinct from the sibling session tools (start, complete, read, scorecard_submit) by the unique verb, but it does not explicitly name or differentiate those siblings.

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?

Usage is implied by "Cancel a scheduled interview session," suggesting this is for sessions that have not yet run. However, there is no explicit when-to-use guidance, no exclusions, and no mention of alternatives such as completing or starting a session instead.

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