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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is given. The description adds useful behavioral detail beyond that by naming the returned fields (ids, titles, market price, record sale), which matters since there is no output schema. It omits result limits or empty-result behavior.

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 tight sentences with no wasted words; the purpose and searchable fields are front-loaded, and the get_card pointer is placed at the end as a follow-up cue.

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 no output schema, the description usefully discloses return fields, and the read-only/open-world annotations cover safety. The only gap is that limit and category semantics are unaddressed, which is minor for a three-parameter search tool.

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 only 33%, and the description partially compensates by explaining that the query matches name, set, number or player. However it says nothing about the role of the category enum or the limit parameter, leaving two of three parameters to be inferred from the schema alone.

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 and resource ('Find trading cards tracked by CardVolume') plus the searchable fields (name, set, number, player) and the return shape. It also distinguishes itself from the sibling get_card by noting that full data requires that tool.

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?

Explicitly routes the agent to get_card with an id when full data is needed, which is the natural follow-up. It does not, however, clarify when to prefer this over get_set_checklist or list_record_sales, so the sibling coverage is partial.

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