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Agent skill
One file that teaches an agent the whole API.
/skill.md is one markdown file that tells an agent what HorseRacingAPI is for, how to get a key, which calls answer the common questions, the limits and the errors.
Save it as ~/.claude/skills/horseracingapi/SKILL.md, or upload it as a skill in Claude's settings. Agents that look for skills find it at https://horseracingapi.org/.well-known/agent-skills/index.json.
For everything at once, the full manual is the whole API in one file.
MCP server
https://horseracingapi.org/mcp
Add it as a connector in Claude or ChatGPT, or with your key in Cursor and Claude Code. Every tool is on the MCP tools page.
Agent skill
https://horseracingapi.org/skill.md
One file that teaches an agent the whole API. Save it as ~/.claude/skills/horseracingapi/SKILL.md, or upload it as a skill in Claude's settings.
The full manual
https://horseracingapi.org/documentation/manual.md
Every endpoint, parameter, sample and guide in one markdown file, to paste into any assistant.
llms.txt
https://horseracingapi.org/llms.txt
The short index an assistant reads first, to decide what else to fetch.