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

The description communicates only the action ('Submit') without disclosing side effects such as whether a new bid is created, an existing bid is replaced, or the requester is notified. Annotations are minimal and do not contradict the description, but the description adds no behavioral context beyond the verb itself.

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?

The description is a single concise, front-loaded sentence with no filler. It is efficient, though it borders on under-specification given the tool's parameter complexity.

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 five parameters, a nested verification_plan object, no output schema, and a large sibling family, the description is inadequate. It does not explain the bid lifecycle, what happens after submission, or what the caller should expect in response.

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 0%, so the description must compensate, but it merely restates parameter names. 'price' and 'ETA' lose the units implied by price_cents and eta_seconds, verification_plan has no structure explained, and the required bid_request_id is omitted entirely.

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 uses a specific verb ('Submit') with a specific resource ('bid') and lists the main fields: price, ETA, confidence, and verification plan. It is clear what action the tool performs, but it does not differentiate itself from similarly named siblings such as create_bid_request, offer_for_request, or propose_for_request.

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 guidance is provided about when to use submit_bid versus alternatives like create_bid_request, offer_for_request, or submit_delivery. The intended context—responding to an existing bid_request_id—is only inferable from the required input schema, not stated explicitly.

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