NullClaw

NullClaw is the smallest fully autonomous AI assistant infrastructure available — a static Zig binary that weighs just 678 KB, boots in under 2 ms, and requires nothing but libc. It supports 50+ AI providers, 19 messaging channels, 35+ tools, and 10 memory engines, all packed into a single self-contained binary that runs on any hardware with a CPU, including $5 ARM single-board computers. The project is MIT-licensed and open source, built entirely in Zig with zero runtime dependencies beyond optional SQLite.

• Impossibly Small Binary: 678 KB static binary with no runtime, no VM, and no framework overhead — install via Homebrew or build from source with Zig 0.16.0.
• Near-Zero Memory Footprint: ~1 MB peak RSS, making it suitable for the cheapest ARM SBCs, microcontrollers, and edge hardware.
• Instant Startup: Boots in under 2 ms on Apple Silicon and under 8 ms on a 0.8 GHz edge core.
• 50+ AI Providers: Supports OpenRouter, Anthropic, OpenAI, Azure OpenAI, Gemini, Vertex AI, Ollama, Groq, Mistral, xAI, DeepSeek, and any OpenAI-compatible endpoint via pluggable vtable interfaces.
• 19 Messaging Channels: Connect via CLI, Telegram, Signal, Discord, Slack, iMessage, Matrix, WhatsApp, IRC, Nostr, Line, DingTalk, Email, QQ, Mattermost, and more.
• 10 Memory Engines: Hybrid SQLite search (FTS5 + vector cosine similarity), Markdown, ClickHouse, PostgreSQL, Redis, LanceDB, LRU, and API backends.
• Multi-Layer Security: Pairing-based auth, ChaCha20-Poly1305 encrypted secrets, Landlock/Firejail/Bubblewrap/Docker sandboxing, workspace scoping, and signed audit logs.
• MCP & A2A Support: Native Model Context Protocol (MCP) server integration and Google A2A protocol v0.3.0 for agent-to-agent communication.
• Pluggable Everything: Every subsystem (providers, channels, tools, memory, tunnels, peripherals, runtimes) is a vtable interface — swap implementations with a config change.
• Edge & WASM Deployment: Supports Cloudflare Worker edge deployment with WASM logic modules, plus tunnel support via Cloudflare, Tailscale, and ngrok.
• 5,300+ Tests: Comprehensive test suite pinned to Zig 0.16.0 with CalVer (YYYY.M.D) releases.
• Hardware Peripheral Support: Serial, Arduino, Raspberry Pi GPIO, STM32/Nucleo interfaces via pluggable peripheral vtable.