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

Annotations already mark readOnlyHint=true and destructiveHint=false, so the safety profile is known. The description adds valuable non-annotation context: 'Public, no auth' clarifies access requirements, and 'escrowed BEFORE they're listed' reassures about fund safety, going beyond what structured annotations provide.

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 core listing information is front-loaded in the first sentence, and the parameter behavior is explained before the 'WIN ONE' digression. The section about winning is arguably tangential but provides useful workflow context; it is not bloated and every sentence adds relevant 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?

With no output schema, the description compensates by listing the returned fields: open bounties, entrants, deadlines, receipts, and per-id verdicts. It also states authentication requirements and a REST twin. Minor gaps like pagination or sorting are not critical for a small board tool, so it is reasonably complete.

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 the 'id' parameter only as 'one bounty in full detail'. The description expands this with 'entry scores + Rokha's verdict once judged', telling the agent exactly what extra data arrives when id is passed. Since schema coverage is 100%, the baseline is 3; the added detail earns a 4.

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 'The playground's bounty board' and enumerates exactly what the tool returns: open bounties, entrants, deadlines, and paid receipts. It clearly distinguishes this read tool from sibling actions like bounty_create and bounty_submit by presenting it as the board to browse, not to mutate.

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 explains the two modes: no id lists the board, passing id retrieves full detail. It even routes winning actions to playground_join and bounty_submit, giving context on how this tool fits into the wider workflow, though it does not explicitly state 'do not use this to submit or create.'

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