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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds that results are 'bounded, cursor-based', which provides some behavioral context beyond the annotations, but does not disclose details like default sorting or pagination limits beyond the schema.

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, efficient sentence that covers the key aspects without unnecessary words. It is front-loaded with the main purpose and succinctly includes scope and result mechanism.

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 tool is a search with cursor-based pagination and four parameters, the description is fairly complete. The presence of an output schema reduces the need to describe return values. However, it lacks details on search behavior (e.g., substring matching, case sensitivity) and what the cursor represents, though these are minor.

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?

All parameters have schema descriptions (100% coverage), so the baseline is 3. The description does not add significant additional meaning beyond what the schema already provides; it references 'bounded' and 'cursor-based' but these are also reflected in the parameter descriptions.

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 verb 'Search' and the resource 'Formula 1 history index', listing specific entity types (drivers, teams, circuits, races). This distinguishes it from sibling tools which are all 'get_*' or 'compare' operations.

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 implies usage for searching across multiple entity types and mentions 'bounded, cursor-based results', but does not explicitly state when to use it versus alternatives. No exclusions or when-not-to-use guidance is provided.

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