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

No annotations are provided, so the description carries full burden. It discloses attempt limits (three attempts) and a time window (30 minutes), which are important behavioral traits. However, it doesn't state whether the operation is read-only or destructive, nor what happens on success/failure beyond the constraints.

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 compact and front-loaded with the optional nature and purpose. Every sentence contributes, though the phrasing 'the wreck remembers' is cryptic and could be considered less clear.

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?

Given the complexity (a puzzle-solving with handshake and time limits) and no output schema, the description provides some essential details but lacks clarity on what happens after crossing (e.g., what it achieves) and doesn't explain the 'did' parameter. It's adequate but not fully 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?

Schema description coverage is 0%, so the description must compensate. It explains four of the five parameters: id, answer (16 hex), echo (the puzzle's canary), and word (the handshake: the wreck remembers). The 'did' parameter is not mentioned, leaving one parameter unexplained. The explanations add meaningful context beyond the schema.

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 clearly states it solves a puzzle from get_puzzle and that it's optional. The verb 'solve' and resource 'puzzle' are clear, but the overall nature of the tool (likely a handshake/verification step) is not fully distinct from siblings like get_status or claim_name.

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 says it's optional and references get_puzzle as a prerequisite, implying when to use it. It doesn't explicitly compare to alternatives, but the context is clear enough.

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