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urltodata is designed for consumption by both humans and AI agents. Two machine-readable interfaces are available alongside this documentation.

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llms.txt

A plain-text Markdown file at /llms.txt following the llmstxt.org specification. This gives LLMs a concise overview of every endpoint, its parameters, and expected responses — optimized for minimal token usage.
Use this when you want an AI coding assistant (Cursor, Copilot, Claude Code) to understand the API quickly. Paste the content into your prompt or reference it as context.

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OpenAPI spec

A full OpenAPI 3.1 specification at /openapi.json with schemas, parameter definitions, and response types:
AI agent frameworks that support OpenAPI function calling can consume this directly to generate typed API clients.

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Choosing the right interface

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Token efficiency

The llms.txt file is optimized for LLM context windows — ~5KB of clean Markdown vs ~50KB for the full OpenAPI spec. When working with a token-limited AI, prefer llms.txt for quick understanding and openapi.json only when the agent needs exact schema definitions.