sire_stats

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

No annotations provided, so description carries full burden. It mentions return of win rate and place rate and filtering, but fails to disclose rate limits, authentication needs, or whether the operation is read-only. Minimal behavioral context.

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?

Two sentences with no wasted words. Front-loaded with main purpose, followed by filtering capabilities. Highly concise and efficient.

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?

No output schema exists, so description should detail return structure. Only mentions 'win rate and place rate' without explaining format or aggregation. Also omits the year_from parameter. Incomplete for a 4-parameter tool with no output schema.

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?

Description explains the sire_name, venue, and distance parameters, adding context beyond the schema titles. However, the year_from parameter is not mentioned, and schema coverage is 0%, so description partially compensates but leaves a gap.

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 analyzes progeny performance of stallions, specifying win rate and place rate. This verb-resource combination ('analyze progeny performance') is specific and distinguishes it from sibling tools like jockey_stats or horse_history.

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 implies use for analyzing a sire's progeny with filtering options, but does not explicitly state when not to use or provide alternatives such as horse_history for individual horse data. Guidance is present but not comprehensive.

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