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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered; the description's trailing 'Read-only.' is largely redundant. However, the description does add real behavioral content by disclosing the scope of what is returned (the specific criteria, definitions, and version info) and that it includes reproducible re-verification steps and public tooling.

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?

One dense, front-loaded sentence that names the verb and enumerates the covered topics, followed by a two-word safety tag. It is efficient, though the standalone 'Read-only.' earns little since the annotation already states readOnlyHint=true.

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?

With zero parameters and an output schema present, the description need not explain return values or inputs. It adequately frames this as a documentation/explainer tool, though it could note whether the methodology is versioned or how it relates to the verification tools the siblings expose.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a no-parameter tool applies. No parameter semantics are needed or missing.

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?

States a specific verb (Explain) and resource (the PRUVIQ methodology), then enumerates exactly what is covered: ranking criteria, research status definitions, verification criteria version, and research-ledger arbiter and cost. This clearly separates it from the sibling tools, which all return data rather than documentation.

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 phrase 'give the exact steps and public tools to re-verify a claim yourself' implies the use case (auditing/verifying a claim), but there is no explicit when-to-use statement, no prerequisites, and no routing to alternatives such as get_strategy_verdict or get_forward_verification_records. Usage is inferable rather than stated.

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