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

With no annotations the description carries the full burden, and it does disclose two real traits: execution is 'paid' and a completed run returns an RVO plus a signed Verification Receipt. Since no output schema exists, that return-value disclosure is genuinely useful. It still says nothing about permissions, side effects, or failure modes, so it falls short of full transparency.

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 short sentences with no padding, front-loading the tool identity and then the return artifacts. It is efficiently sized; the only drag is that undefined jargon consumes space without adding clarity.

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?

For a zero-param tool with no annotations and no output schema, the description is the only source of truth, and it leaves key questions unanswered: what 'R/IV', 'RVO', and the receipt actually are, and when an agent should reach for this instead of the many similar verify tools. It is not adequate as a standalone spec.

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 0-param tool applies. No parameter meaning is lost.

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 calls itself an 'independent evidence-verification primitive for agent assurance', but never states what it actually verifies or against what. Undefined acronyms (R/IV, RVO) and the marketing-flavored 'agent assurance' phrase leave the purpose opaque, and it gives no basis for distinguishing it from siblings like agent.action.verify, data.flow.verify, or source.verify.

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?

There is no statement of when to use this tool, when not to, or which of the roughly dozen sibling *verify/*check tools it replaces. The agent is left to infer usage entirely, matching the 'no guidance' calibration level.

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