smg

Engine-agnostic LLM gateway in Rust. Full OpenAI & Anthropic API compatibility across vLLM, TRT-LLM, TokenSpeed, SGLang, OpenAI, Gemini & more. Industry-first gRPC pipeline, KV cache-aware routing, chat history, tokenization caching, Responses API, embeddings, WASM plugins, MCP, and multi-tenant auth. Maintained by smg-project on GitHub, where it has earned 442 stars from the community.

It's actively developed around anthropic, claude, gemini, and is a solid reference for anyone building with these tools.