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

With no annotations, the description carries the full burden; it does disclose that this is a paid operation and that completed execution returns an RVO plus a signed Verification Receipt, which is genuine behavioral context. However, it says nothing about auth requirements, failure/timeout behavior, or what happens on partial execution.

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?

Two sentences and front-loaded, but the opening clause is redundant jargon ("verification primitive for verification") and the second sentence leans on undefined acronyms (RVO, R/IV). It is short but not maximally information-dense.

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?

There is no output schema, so the description should explain the return artifacts, but RVO and the Verification Receipt are never defined. For a paid, zero-input tool whose only visible output is two unexplained objects, the definition leaves an agent without enough to interpret results.

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 the baseline is 4. The description offers no parameter detail, but none is needed.

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 phrase "evidence-verification primitive for verification" is essentially circular and restates the name rather than defining what a "number" is or what verification means here. It does not distinguish this tool from the many sibling verify/check tools (citation.verify, source.verify, claim.check, transaction.verify). Only the return artifacts hint at what the tool actually does.

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?

No guidance on when to use this versus the crowded set of sibling verification tools, and no prerequisites or exclusions are stated. The agent is left to infer usage entirely.

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