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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description does add one genuine trait beyond them — that the assessment is deterministic and signed — which tells the agent the output is reproducible and cryptographically attestable, but it says nothing about determinism inputs, failure modes, or what the signature covers.

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?

It is short and front-loaded, but the single sentence is a tautological restatement of the title rather than information that earns its place. Brevity here reflects under-specification, not efficient packaging.

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?

An output schema exists, so return values need not be described, but for a verification/preflight tool the description should at least indicate what the negotiation compares and what a negative verdict implies. With two undocumented required arrays and no stated outcome semantics, an agent cannot confidently construct a call.

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?

Schema description coverage is reported at 100%, so the baseline is 3 even with no parameter detail in the description. In practice the schema defines no named properties and only an 'examples' block, so 'offered' and 'required' are never explained; the description's 'supplied input' phrasing adds nothing, and the reported parameter count (0) conflicts with the two required fields.

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 restates the tool name and title almost verbatim, adding only the vague phrase 'deterministic signed assessment over supplied input.' It never says what is being negotiated or assessed (capability sets? tool manifests?) and does not distinguish itself from siblings such as preflight, counterparty_risk_preflight, or data_egress_preflight.

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 when-to-use condition, prerequisite, or alternative is stated, despite a dense field of preflight/guard siblings that an agent must choose between. The agent is given no basis for picking this tool over 'preflight' or 'tool_call_policy_guard'.

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