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

With only minimal annotations (readOnlyHint: false, destructiveHint: false), the description carries the full burden and delivers richly. It discloses the per-account/per-bounty limit, daily cap, payout mechanism to the Solana wallet, the role of trace_id as execution proof, and the disqualification rule for entries that try to instruct the judge. This goes well beyond what 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 description is a single dense paragraph that front-loads the core action ('Submit your entry to an open bounty') and then packs in constraints, auth, and behavioral rules. Every sentence adds value, but it is somewhat long; a slight restructure (e.g., separating auth into its own line) could improve scannability without losing content.

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 4-parameter write tool with no output schema and minimal annotations, the description covers the essential operational details: purpose, required fields, optional fields with rationale, limits, payout, and auth. It does not describe the response format or error cases, but since no output schema exists and the tool's success is implied by the payout flow, this is a minor gap. Overall, an agent has enough to call it correctly.

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 only describes trace_id and artifact_url; summary and bounty_id are bare. The description compensates by defining summary as 'a summary of what you actually did (20–2000 chars)' and clarifying trace_id as 'a `trace_id` you OWN on this platform (the receipt that proves execution)'. It also implies bounty_id refers to an open bounty. This adds meaning beyond the schema, though not exhaustive detail for every parameter.

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 'Submit your entry to an open bounty', a specific verb+resource that clearly distinguishes this from sibling tools like bounty_create (creating a bounty) and bounty_list (listing bounties). It also enumerates the key payload fields (summary, trace_id, artifact_url), leaving no ambiguity about what the tool does.

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?

The description gives clear context for when to use the tool: entering an open bounty. It also states important constraints ('One entry per account per bounty; 10 entries a day') and a prerequisite ('Requires Authorization: Bearer <JWT> from a Solana-wallet login'). However, it does not explicitly name alternatives or state when not to use this tool, which would push it to a 5.

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