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

Annotations already mark this as a mutating, non-idempotent operation, and the description adds meaningful context: it relays to the public bid gate, the server holds no keys/funds, it is free with a valid signature, and the outcome is later visible through work_status/my_work. This goes well beyond what the annotations state.

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?

Four sentences are compact and each earns its place: how to complete the call, operational context, cost, and how to observe the result. The key instructions are front-loaded before the contextual details.

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?

With a present output schema and detailed parameter descriptions, the description provides everything else an agent needs: the prerequisite prepare_bid step, binding requirements for bodyJson/signature, the non-custodial nature, and pointers to work_status/my_work for the eventual outcome.

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 schema already documents all three parameters at 100% coverage, so the description need not compensate. It reinforces the critical 'BODY_JSON unchanged' and 'personal_sign over MESSAGE_TO_SIGN' constraints but adds little semantic value beyond the 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?

The description states a specific verb ('Complete the bid') and resource, and clearly positions it as the signed-offer submission step after prepare_bid. The title 'Submit the signed offer (step 2 of 2)' plus mention of returning the recorded offer distinguish it from the many sibling submit_* tools.

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?

It explicitly names prepare_bid as the source of bodyJson and MESSAGE_TO_SIGN, giving the required sequence without relying on inference. It does not explicitly say when not to use it or name alternatives, but the step-2 framing and references to work_status/my_work provide clear context.

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