dual_sign_trade_deal

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

With no annotations, the description carries the full burden. It usefully discloses that the result is an immutable 3-party attestation seal, implying finality and irreversibility, but says nothing about permission requirements, idempotency, failure modes, or whether the buyer signature must match buyer_agent_address.

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?

A single tightly written sentence with the action front-loaded and the consequential side effect attached. Zero filler.

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 no-annotation, no-output-schema mutation tool this is only partially complete: it explains the action and the resulting seal but omits state preconditions (e.g., the deal must be pending), auth/session requirements, and what the caller receives back.

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 100%, so the schema already documents all three parameters clearly. The description adds no format or syntax detail beyond what the schema provides, so the baseline 3 applies.

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 (countersigns) and resource (an existing trade proposal), plus the resulting effect (Oracle mints a 3-party attestation seal). It contrasts implicitly with propose/reject/cancel siblings by scoping to an already-existing proposal, though it never names an alternative explicitly.

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?

'An existing trade proposal' implies the precondition that a deal must already be proposed and that this is the buyer-side completion step, which is useful. However, there is no explicit when-to-use/when-not guidance, no mention of the required session or signature prerequisites, and no routing to siblings like verify_a2a_trade_deal.

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