lego_search_sets

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

With no annotations, the description carries the full burden of disclosure, but it reveals no behavioral traits (e.g., API key requirement, pagination, rate limits, return format). It only mentions search criteria, missing critical operational details.

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 concise at one sentence, but it is too brief for a tool with 6 optional parameters. It could provide more detail without losing conciseness, such as listing all search filters.

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 the complexity (6 params, no schema descriptions, no output schema, no annotations), the description is severely incomplete. It lacks information on pagination, API key usage, and the structure of results, leaving the agent guessing how to invoke and interpret the 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?

Of the 6 parameters (search, theme_id, min_year, max_year, page_size, api_key), the description only implicitly covers 'search' and 'theme_id' via 'name/theme'. The remaining parameters are unexplained, and schema coverage is 0%, so the description fails to compensate.

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 searches LEGO sets by name or theme, with the data source (Rebrickable) indicated in parentheses. It effectively communicates the core function, though it does not explicitly differentiate from sibling tools like 'lego_get_set' or 'lego_search_parts'.

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 'lego_get_set' for single set details or 'lego_search_parts' for parts. The description lacks context on prerequisites or ideal usage scenarios, leaving the agent without decision support.

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