Lumen – A Binary Alternative to JSON-RPC for Model Context Protocol (MCP)
SMRTR summary
LUMEN is a binary protocol designed to replace JSON-RPC for Model Context Protocol (MCP) communication. It cuts wire payload by 40–80% using a static dictionary, self-delimiting frames, and native token streaming. It also adds zero-trust security via Macaroons and ChaCha20-Poly1305 encryption. Implementations exist for Rust, TypeScript, Python, PHP, C#, and WASM.
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