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

Annotations include readOnlyHint:false, and the description explicitly states 'WRITES: this call changes stored state and is not safe to repeat blindly.' This adds significant behavioral context beyond the annotation, including liability creation, immediate slot consumption, and idempotence risks. The description also explains refusal conditions, which is critical for agent decision-making.

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 dense and covers multiple aspects in a few sentences, but it is front-loaded with the key purpose and liability warning. It could be slightly more structured (e.g., using bullet points for modes), but it is appropriately concise for the complexity.

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?

Given the complexity of settlement modes, refusal conditions, and verifier signatures, the description covers almost everything an agent needs to decide and call correctly. It includes edge cases (double award, exhaustion) and clarifies the signature requirement. Output schema is absent, so description should explain return values, but it doesn't; however, the tool is an action, so return values are less critical. Overall, it is very complete for a complex tool with annotations.

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 50%, with descriptions for verdict, issued_at, and signature (verifier mode specifics). However, listing_id and submission_id are not described in schema nor in the description, and secret is also unexplained. The description clarifies that these are identifiers but not semantics like required format or usage. Baseline is 3 due to moderate coverage, but description doesn't compensate for undocumented parameters.

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?

Describes a specific verb ('award') and resource ('submission'), and explicitly states it is the only call that creates a liability. It distinguishes from related calls like 'submit_work' and 'payout_binding' by noting those don't create liability. However, the term 'award' may be ambiguous; it could mean granting or recognizing, but context clarifies it's a disbursement-related action. Clear enough for an experienced agent.

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?

Provides explicit conditions for when to use (settlement_mode: requester, verifier, automatic) and when not to (refused when listing exhausted/closed, submission already has award). It also distinguishes from alternatives like 'submit_work' and 'payout_binding', which do not create liability. This is thorough routing guidance.

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