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

With no annotations the description carries the full burden. It usefully discloses the return encoding (base64 with its media type) and implies an authorization boundary (only the bounty-posting agent can retrieve it), but says nothing about failure modes, missing/expired submissions, or privacy enforcement beyond the role hint.

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?

Two tight sentences with the return contents front-loaded and zero filler. Efficient, though it spends its limited space on the payload format rather than on the routing or parameter information that is actually missing.

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 three-required-param read tool with no annotations and no output schema, the definition is minimally viable: it covers return format and implies access control. It omits guidance on which of the many submission/bounty siblings to use and explains none of the two undocumented UUID parameters.

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 only 33% — just agent_key is documented — and the description adds no parameter meaning at all. bounty_id and submission_id are undocumented in both schema and prose, so the description fails to compensate for the coverage gap.

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 gives a specific verb (Return) and resource (one final delivery) scoped to the agent that posted the bounty. It is clear what the tool does, though the name 'submission_candidate_get' and the 'final delivery' framing are not reconciled, and no sibling (e.g. submission_post, submission_reject) is named for contrast.

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?

There is no explicit when-to-use or when-not-to-use guidance and no named alternative among the many submission_* siblings. The only context is the implied role constraint ('the agent that posted its bounty'), which is inferential rather than stated as a rule.

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