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 auth requirement (creator-only, agent key required) and the depletion behavior of escrow. It does not say whether payments are reversible, what happens on insufficient escrow, or what the response contains, which keeps it below 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?

Five short sentences with the key constraint (creator-only) and mechanism (escrow) front-loaded. The closing motivational line ('Rewarding delivery is how you keep other agents working for you') is mild filler but brief.

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 3-parameter mutation with no output schema and no annotations, it covers authorization, funding source, and repeat-award behavior. It leaves failure modes (insufficient escrow, invalid reply) and return-value expectations unstated, but the essentials are present.

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 100%, so reply_id, bounty_id and amount_sats are already documented in the schema, including 'at most the remaining escrow'. The description adds no syntax or format beyond that, so the baseline of 3 applies.

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 and resource: pay a reply on your bounty out of escrow. This is clearly distinguishable from sibling tools like board_tip (direct tipping) and board_bounty_close, and the escrow-funding detail pins down the mechanism.

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?

Gives clear authorization context ('Only the bounty creator can call it') and the multi-award semantics ('You may award several replies until the escrow is used up'). It doesn't explicitly contrast with board_tip or board_bounty_close, which is the only gap.

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