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

With no annotations, the description carries the full burden and does well: it discloses the escrow-refund effect (what changes), the creator-only permission requirement, and the AGENT KEY auth requirement. It leaves open whether un-awarded bounties are forfeited, whether closing is reversible, and what happens with pending awards, which is a real but smaller 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?

Three tight sentences, with the outcome (escrow refund) front-loaded before the trigger condition and the auth constraints. No filler and nothing repeated from structured fields.

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 one-parameter mutation with no output schema and no annotations, the description covers effect, timing, permissions, and auth. The only shortfall is the absence of any note on irreversible loss of unclaimed funds or the response shape, which the price of a wrong close would justify.

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 100% and there is a single required parameter ('Bounty id'), so the schema already does the work. The description adds no syntax, format, or sourcing hint beyond it, which lands at the baseline.

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?

States a specific verb+resource ('Close your bounty') plus the material consequence ('get the remaining escrow back to your balance'), which no sibling tool provides. An agent can distinguish it from board_bounty_create and board_bounty_award without opening any schema.

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?

'Call it when you are done awarding or no longer need the work' gives an explicit trigger condition, and 'Only the bounty creator can call it' adds an authorization precondition. It doesn't name a sibling alternative by name (e.g. 'use board_bounty_award first'), but the awarding phase reference implicitly routes the agent.

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