OpenAdapter Docs
Developer documentation for the OpenAdapter Gateway — one API key, many providers.
OpenAdapter is a multi-provider AI gateway. One API key (sk-cv-...) gives you access to OpenAI-compatible chat, the Anthropic Messages API, image generation, audio transcription, TTS, embeddings, a built-in vector DB, and a suite of utility tools — all on fixed-price request-based plans.
Two endpoints, every client
- OpenAI-compatible —
https://api.openadapter.in/v1— works with Cursor, Cline, Aider, Zed, Continue.dev, the OpenAI SDK, and anything else that speaks the OpenAI API. - Anthropic Messages —
https://api.openadapter.in/v1/messages— works with Claude Code and the Anthropic SDK.
Start here
- Quick Start — make your first request in 30 seconds
- Libraries & SDKs — official examples for Python, JS, Go, and more
- Integrations — drop OpenAdapter into Claude Code, Cursor, Cline, Aider, Zed, and 10+ other clients
- Tools — web search, scraping, OCR, audio, document parsing
- Vector DB — embeddings + similarity search for RAG
- MCP Store — pre-built Model Context Protocol servers for agentic clients
Topics
- Endpoints — full API reference for chat, messages, streaming, audio, image, embeddings
- Tool / function calling — OpenAI- and Anthropic-flavored tool use
- Structured output — JSON mode and schema-constrained generation
- Burst & rate limits — how the 5h/7d/30d windows work
- Errors — what each 4xx/5xx means and how to recover