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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds useful behavioral context by specifying that it returns 'complete public auction details' including source metadata, schedule, counts, and catalogue links, which goes beyond the annotations.

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, front-loaded sentence that enumerates the returned data without any filler or redundancy.

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?

The output schema and annotations cover return values and safety respectively, so the description does not need to explain those. However, for a tool with a required ID parameter and sibling alternatives, the lack of usage guidance and parameter semantics leaves clear 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 description coverage is 0% for the single required auctionId parameter, and the description does not mention it at all. While the parameter name and regex pattern are self-explanatory in the schema, the description provides no added meaning such as where to obtain an auctionId or its format.

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 and resource ('Get complete public auction details') and enumerates what is returned (source metadata, schedule, counts, catalogue links). It clearly distinguishes the tool from list-type siblings by implying single-auction retrieval, though it does not explicitly name getAuctionCatalogue or listAuctions as alternatives.

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 description provides no guidance on when to use this tool versus alternatives such as getAuctionCatalogue or listAuctions. It only describes the output, leaving the agent to infer the selection context.

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