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 the returned verdict vocabulary (CLOSED_FAITHFUL/DEVIATED/NOT_EXECUTED/UNDETERMINED, PRICE_-prefixed on v3, PAIR_INVALID) and the binding assertions checked. It omits operational traits such as signing/permission requirements or performance, so not a 5.

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?

Front-loaded with the core operation, then the return values, then the binding requirements and scope limits. The enumeration of status values is dense but purposeful; nothing is padded.

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 complex, no-output-schema tool the description handily explains the return shape and the binding assertions, plus the v3 destination-gate requirement. It is nearly complete, though the phantom destinationPreTradeAttestation parameter and lack of any auth/operational note leave small gaps.

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 coverage is 100% and both parameters already have descriptions ('the pre-trade oracle-safety attestation the agent gated on', 'the Execution Receipt to check against'), so the baseline is 3. The description adds binding context but also references a destinationPreTradeAttestation parameter that is absent from the schema, which muddies rather than clarifies parameter semantics.

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?

Names a specific verb and resource — verifying that a pre-trade attestation and an Execution Receipt describe the same trade and that the certify→execute→prove loop closed. It is clearly distinguishable from siblings like execution_receipt or pre_trade_safety_check, and the closing note ties it to agent_begin_trade and execution_receipt.

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?

Gives explicit context (use after a trade to check attestation/receipt binding), a concrete prerequisite (on v3 receipts committing a destination gate, pass destinationPreTradeAttestation or the pair cannot close), and scope exclusions (does not establish principal authorization, price correctness, or economic safety). It stops short of naming alternative tools for those other concerns, so not a full 5.

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