openf1_position

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, covering safety and idempotency. The description adds the return format (array of specific fields) and explicitly notes that no authentication is needed, which are useful. However, it does not disclose potential large result sets, pagination behavior, or the strong recommendation to filter by driver_number beyond what the schema provides.

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 extremely concise and well-structured: a one-line purpose, a return format list, and an auth note. Every sentence contributes value with no redundancy or filler.

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 low complexity, full schema coverage, and strong annotations, the description covers the essential points: what data is returned and that no auth is needed. It includes a return field list, which compensates for the lack of an output schema. It doesn't mention practical filtering guidance (e.g., strongly recommending driver_number), but that is already in the schema, so the description is sufficiently complete.

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 100%, so the schema fully documents all parameters and their descriptions. The description does not add information about parameters beyond the schema, so the baseline score of 3 is appropriate.

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 states the tool's specific function: retrieving driver track position over time within a session, with the core concept 'position changes throughout a session.' This clearly distinguishes it from sibling openf1 tools like openf1_location or openf1_car_data, which cover different data types.

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 tracking position changes across a session, but provides no explicit when-to-use guidance or comparison with alternatives. It does not state when not to use it or mention related tools, though the context makes the primary use case reasonably clear.

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