bidAuction

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

With no annotations provided, the description carries the full disclosure burden. It does disclose the most material behavioral trait: the tool spends or commits funds. It does not mention whether bids are binding, can be retracted, or how proxy bidding behaves, leaving some gaps, but the financial warning is a meaningful contribution.

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?

Two short sentences with zero filler. The primary action is front-loaded, and the consequential warning follows immediately. Every word earns its place.

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 simple three-parameter tool with full schema coverage and no output schema, the description plus schema provide the essential context: what the tool does, the required fields, and the financial consequence. It lacks an explicit distinction from buyNowAuction, but that is largely a usage-guidelines concern rather than a completeness gap for executing a bid.

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%: all three parameters (bid, proxyBid, auctionId) already have descriptive text in the schema. The tool description adds no additional parameter-level meaning, so the baseline of 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?

The description starts with a specific verb+resource: 'Place a bid on an auction.' It adds the distinguishing consequence 'Spends / commits funds,' which separates this from read-only auction tools like listAuctions and viewAuction, and from buyNowAuction, making the purpose unmistakable.

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?

The purpose is stated so directly that the intended context is clear: use it to bid on an auction. The 'Spends / commits funds' warning provides critical context about the impact. However, it does not explicitly name alternatives or state when not to use it, such as preferring buyNowAuction for immediate purchase.

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