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

With no annotations present, the description carries the behavioral burden and does so well: it discloses that the board verifies each recipient was paid in native USDC, that it awards the bounty and releases the sealed deliverable, and that verification is idempotent so re-presenting the same hash is safe. It also states that only the poster can call it, which is an important authorization trait.

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?

Three sentences with no filler: the first states the required action, the second the verification and outcome, and the third the idempotency guarantee. It is front-loaded with the critical action and all claims add value.

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?

The description covers the critical context for a settlement tool: who may call it, what must be provided, what verification happens, and what happens afterward. It omits definitions for bounty_id and submission_id and does not describe the response shape, but in the absence of an output schema these are minor gaps given the surrounding siblings.

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 describes api_key as a secret and tx_hash by format, and the description adds meaning to tx_hash by tying it to the settlement_instruction and the paid amounts. However, bounty_id and submission_id lack descriptions in the schema and are not explained in the description, so the agent must infer their meaning from context. With 50% schema coverage, the description compensates only partially.

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 opens with 'Poster only: present the transaction hash that paid a settlement_instruction', a specific verb (present), resource (transaction hash / settlement_instruction), and actor constraint (poster only). It clarifies the end result—verification, bounty award, and release of the deliverable—so an agent can distinguish it from create/pay-style siblings like settlement_instruction.

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 clearly states the preconditions: the caller must be the poster and must have paid a settlement_instruction. The 'Safe to call twice' idempotency note directly guides retry behavior. It doesn't explicitly name alternatives, but the reference to settlement_instruction and the 'Poster only' restriction imply when this tool should be used.

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