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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds genuine context beyond that: it accepts either an uploaded RaceStudio CSV file or pasted CSV text, and names the expected export format. It stops short of describing processing limits or error behavior, so 4 rather than 5.

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?

Three sentences, front-loaded with the use case before the negative routing guidance. No filler, no restatement of the title, and every clause carries information an agent needs for selection.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. The input paths are covered at a high level, but with 0% schema coverage on a nested file object, minimal field-level detail is missing for fully confident invocation.

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 0%, so the description must carry the load. It does partially compensate by contrasting the two input modes ('upload an AiM RaceStudio CSV export or paste its CSV text'), which maps onto the file and csv_text parameters. However, it says nothing about the nested file_id/download_url/mime_type fields or the 20MB csv_text ceiling, leaving semantic gaps.

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?

States a specific verb and resource ('analyze my AiM data') and enumerates concrete outputs: lap times, best lap, consistency. It explicitly carves itself away from siblings by excluding lap-comparison and slowest-sector analysis, so an agent can distinguish it from compare_laps and find_time_loss without opening a schema.

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?

Gives an explicit trigger ('Use this when you want to analyze...') and explicit exclusions ('Do not use for comparing two specific laps or finding one lap's slowest sectors'). The exclusions map directly onto the sibling tools, giving real routing guidance rather than implied usage.

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