list_sets

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

Annotations already provide readOnlyHint and openWorldHint. The description adds no behavioral details beyond the schema (e.g., pagination, rate limits, return format). It relies on annotations, which are present, so value added is minimal.

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?

Very short (two sentences) and front-loaded with the core action. While concise, the parameter description could be integrated more efficiently. No wasted words, but could add value without increasing length much.

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?

Given low complexity (one optional parameter) and presence of an output schema, the description is adequate but not comprehensive. It does not explain what information is returned (e.g., set codes, names, release dates), leaving it to the output schema. Usage context and examples are 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?

The description explains that the search parameter is an 'Optional name/code filter,' adding meaning beyond the raw schema (which has no description). However, it lacks details on match behavior (case sensitivity, partial match) and default behavior when empty. Schema coverage is 0%, so description compensates but only modestly.

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 clearly states the tool lists MTG sets, with an optional search filter. It is specific enough to distinguish from sibling tools like browse_cards, but could explicitly mention that it returns a list of set names or codes.

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?

No guidance is provided on when to use this tool versus alternatives such as get_set_stats or search_cards. The description does not mention context or restrictions.

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