acknowledge_run_cancellation

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

Annotations provide readOnlyHint=false (a write operation) but make no claim about idempotency, destructiveness, or side effects. The description says it 'make[s] cancellation terminal,' implying a state-transition side effect, yet it doesn't disclose whether the operation is reversible, what happens to associated resources/artifacts, or what the state of the run becomes. For a state-changing operation with minimal annotation coverage, this is a disclosure gap.

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 appropriately compact at a single sentence with no filler. It front-loads the primary action (acknowledge) and the consequence (make terminal). However, the brevity comes at the cost of explanatory depth, and a few more clauses about the cancellation lifecycle would justify a higher conciseness score as 'well-spent' text.

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?

This is a state-transitioning tool in a complex run-lifecycle domain with 26 sibling tools and zero schema coverage on 3 required parameters. Despite having an output schema, the description provides no context about the cancellation flow, the meaning of receipt/revision parameters, or how this step fits into the host-interruption sequence. For a run-control mutation in a rich domain, this is under-specified.

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%, so the description must compensate but does not. The three parameters (run_id, expected_revision, host_receipt_id) are entirely undocumented—there's no explanation of what host_receipt_id references, how expected_revision functions as an optimistic concurrency guard, or how these params relate to the 'host interruption' flow. The schema titles alone don't convey semantic relationships.

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 'Acknowledge host interruption and make cancellation terminal' uses a specific verb (acknowledge) and identifies a resource (run cancellation), giving a discernible purpose. However, it's somewhat vague about what 'terminal' means operationally and how this differs from the sibling request_run_cancellation, which handles a different phase of the cancellation lifecycle.

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?

No explicit when-to-use guidance is provided. The description doesn't state when to call this vs. request_run_cancellation, pause_host_run, or other lifecycle siblings. A careful reader can infer it's part of a cancellation flow, but the description offers no direct context about prerequisites or ordering relative to other run-control operations.

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