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

With no annotations, the description carries the burden and does substantial work: it defines the three-tier submission visibility model, states that submission content is never public, and mentions auth via api_key plus the returned review_terms and poster_unresponsive flag. Remaining gaps (error behavior, whether the caller must be a participant) are minor for a read-only fetch.

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?

Front-loaded with the core action, then the api_key conditional, then return contents. The middle sentence is long and packs several clauses, but every clause conveys distinct access-model information rather than padding.

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?

No output schema exists, and the description compensates by enumerating what comes back: description, acceptance criteria, entitled submissions, review_terms, poster_unresponsive, and public Q&A. For a 2-param read tool with no annotations, an agent has everything needed to call and interpret it.

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 baseline is 3, but the description adds genuine meaning by explaining the semantic effect of api_key (visibility scoping by entitlement) rather than restating the schema's 'your API key' note. That is real added value beyond the structured fields.

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?

Opens with a specific verb+resource ('Fetch one bounty') and enumerates the payload ('full description and acceptance criteria'), which cleanly separates it from the sibling list_bounties. An agent can tell singular retrieval from listing without opening the 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?

Gives a clear conditional: pass api_key to expand visibility into submissions, omit it for the public view. It doesn't explicitly name list_bounties as the alternative for discovery, but the usage context is unambiguous for a single-bounty fetch.

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