Zero-dependency MCP (Model Context Protocol) server in pure Lua. Only requires luasocket. 2MB RSS vs Python FastMCP's 97MB. - json.lua: pure Lua JSON encoder/decoder (~150 lines) - lmcp.lua: MCP server with streamable-http transport (~230 lines) - example_server.lua: shell/file tools demo Implements MCP 2025-03-26: initialize, tools/list, tools/call, notifications/initialized, ping. JSON-RPC 2.0. SSE support. CORS. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>