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

With annotations indicating readOnlyHint=false and openWorldHint=true, the description adds value by explaining the dual-chain anchoring and cost, which have practical implications. It does not, however, clarify the exact output format or whether the anchoring is a permanent on-chain write, leaving some behavioral ambiguity.

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 extremely concise at two short sentences, with the primary purpose front-loaded. Every phrase—'yes/no', 'dual-chain anchored', 'Base + Solana', and '$0.05 USDC'—adds useful information without redundancy.

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 tool's low complexity and complete parameter schema, the description covers the essential purpose and cost. However, the absence of an output schema means the description should ideally clarify the verdict format and how results are returned, which it does only implicitly. The dual-chain anchoring could also warrant a note about latency or determinism, but is not enough for a higher score.

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 already fully documents the single 'question' parameter with a clear description, so the baseline is 3. The tool description adds no additional semantics about parameter formatting, constraints, or edge cases beyond the schema's min/max length.

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 identifies the tool as a yes/no oracle and adds distinguishing detail with 'dual-chain anchored verdict (Base + Solana)' and pricing. While it lacks an explicit verb like 'returns' or 'answers', the noun phrase effectively communicates the tool's function. This distinguishes it from sibling tools such as attest_decision or roll_random.

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 implies usage for yes/no questions and discloses the $0.05 USDC cost, giving some context for when to invoke it. However, it provides no explicit comparison to sibling tools or any guidance on when not to use it, such as for non-binary or attested decisions.

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