Developer docs — OpenAI / Anthropic / fal compatible APIs

From signup to first call: protocol compatibility, model catalog, routing and caching, billing and budgets, open-platform authorization and devices. Every page has raw markdown (append .md).

• Docs index: /llms.txt
• All English docs in one file: /llms-full-en.txt

Machine-readable: /llms.txt, /models.md (append .md to any docs URL for raw markdown)