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

The annotations already declare read-only, idempotent, non-destructive, and closed-world behavior. The description adds useful context by disclosing the 3-credit cost and the categories of data returned, but it does not describe response structure, pagination, or what 'price coverage' means.

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 compact sentence with no filler, and the cost is stated directly. However, the phrasing is fragmentary and 'Chase cards' could be clearer for an agent unfamiliar with the domain.

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 tool is simple with one required parameter, full schema coverage, and rich annotations. Still, because there is no output schema, the description carries more burden for return-value clarity and only broadly lists returned categories without explaining their structure or coverage meaning.

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%, and the single edition_id parameter is fully documented in the schema, including the reference to list_editions. The description only says 'of one edition' and adds no syntax or format detail 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?

The description identifies a specific resource and scope: cards, sealed products, prices, and price coverage for one edition. It is distinguishable from siblings like list_editions or get_card because it is an edition-level overview, but it lacks an explicit verb and the phrase 'Chase cards' is somewhat ambiguous.

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 gives no guidance on when to use this tool versus alternatives such as get_card, get_sealed_prices, or list_editions. The only contextual signal is the cost statement, which does not help an agent choose between tools.

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