athena_impossible_complete

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

With no annotations provided, the description carries full responsibility for disclosing behavioral traits. It does disclose critical non-obvious behavior: the refusal condition and the fact that the receipt is only game/provenance state, never canonical truth or global XP authority. This adds significant transparency beyond the schema, though it omits details about side effects, required authorization, or error handling.

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 two sentences with zero filler. It front-loads the core action ('Record'), immediately specifies the resource, and then adds the critical refusal condition and a caveat about the receipt's epistemic status. Every clause earns its place, and the structure is easy to parse.

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?

Despite having 20 parameters, 14 required, nested objects, and no output schema, the description stays at a high level. It gives the essential gating condition but does not explain how to construct the completion record, what values are expected for fields like transformation_class, how witnesses relate to the completion, or what a successful response looks like (since there is no output schema, the description should cover return value semantics). An agent given only this description would likely need additional guidance to invoke the tool 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 input schema has 20 parameters with 0% schema-description coverage. The description mentions 'ΩA achievement coordinate, witnesses, score inputs, and verified cleanup', which loosely maps to agent_coordinate, witness_refs, score_dimensions, cleanup_status, and unknown_residue, but it does not clarify the meaning or constraints of the many other required parameters such as completion_id, baseline, transformation_class, decisive_move, invariant, or proof_tier. Since the schema itself provides only enums and type constraints, the description fails to compensate for the low coverage.

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 a specific verb ('Record') and a specific resource ('demonstrated/replayed Impossible Challenge completion'), listing key components (ΩA achievement coordinate, witnesses, score inputs, verified cleanup). This clearly identifies the tool's purpose and distinguishes it from sibling tools like athena_impossible_open or athena_impossible_verify, which focus on opening or verifying challenges rather than recording completions.

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 states clear pre-conditions for successful use: COMPLETED is refused unless cleanup is VERIFIED and unknown_residue is zero. This tells the agent when the tool will succeed. However, it does not explicitly compare against alternatives such as athena_impossible_state or athena_impossible_verify, so it lacks explicit exclusion criteria.

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