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 fully covered structurally. The description adds one genuinely useful behavioral fact: these checks do not approve payment, clarifying the decision boundary. It says nothing about staleness of returned checks or how versions relate, so it adds some but not rich context.

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 filler, and the substantive content (what the tool returns) is front-loaded before the caveat. The only minor cost is the unexplained 'versioned broad checks' phrasing, which adds density without 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-parameter, read-only discovery tool with no output schema, the description adequately conveys the shape of what comes back: check versions, parameter schemas, limits, and the proof each check provides. It omits any mention of version selection or result structure, but nothing essential to invoking it is missing.

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 no parameter semantics for the description to carry and the baseline is 4. Nothing in the description contradicts or confuses the empty schema.

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 (find) and resource (versioned checks) plus the payload it returns: parameter schemas, limits, and what each check proves. This reads clearly as a discovery/catalog operation. It falls short of 5 because it never names the sibling it should not be confused with, notably run_verification_checks or get_verification_run, and the phrase 'versioned broad checks' is slightly opaque.

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 explicit when-to-use guidance and no routing to alternatives, despite a crowded sibling set (run_verification_checks, validate_verification_plan, get_verification_run). The only usage signal is the boundary caveat 'Checks do not approve payment', which tells the agent what this tool is not for but not when to reach for it.

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