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

Annotations already carry the safety profile (readOnlyHint, openWorldHint), so the bar is lower. The description adds genuine behavioral context beyond them: the required-argument constraint, AND-combination semantics for filters, and the meaning of status=completed as a prices-realized view. It does not describe pagination behavior, but the additions are substantive.

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 short sentences, front-loaded with what the tool browses, then the hard requirement, then the enum source, then the AND semantics. Every sentence carries a distinct constraint; there is no 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?

With 9 fully documented parameters, readOnly/openWorld annotations, and an output schema present, the description covers the remaining gaps an agent needs: required input, enum provenance, filter combination, and the sold-lot view. Nothing material is missing.

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 coverage is 100% and every parameter already carries a description, so baseline is 3. The description adds the cross-tool constraint that enum values (category, auction_type, sort, status) must come from pristine_auction_categories, which the schema references only loosely – useful routing information 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?

States a specific verb (browse/search), a named resource (Pristine Auction's live sports card and memorabilia inventory), and the source site. An agent can distinguish it from pristine_auction_lot (single-lot detail) and pristine_auction_categories (enum source) without opening a schema.

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?

Gives clear conditions: term or category is required, status=completed browses ended/sold lots, filters combine with AND semantics, and enum values must be sourced from pristine_auction_categories. It stops short of explicitly routing to pristine_auction_lot for a specific lot's detail, so it is strong context without full alternative coverage.

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