The smallest fully autonomous AI assistant.
1 MB binary · Zero dependencies · Written in Zig
nullclaw (also written as Null Claw or NullClaw) is a lightweight autonomous AI assistant — part of the OpenClaw family (formerly MoltBot → ClawdBot) alongside ZeroClaw, PicoClaw, nanobot and others.
Built from scratch in Zig, it runs on anything from a Raspberry Pi to a cloud VM with no runtime dependencies.
git clone https://github.com/nullclaw/nullclaw.git
cd nullclaw
zig build -Doptimize=ReleaseSmall
./zig-out/bin/nullclaw onboard --interactive
./zig-out/bin/nullclaw agent -m "Hello!"
| Binary | ~1 MB (ReleaseSmall) |
| Peak RAM | ~27 MB under full test load |
| Startup | < 2 ms |
| Tests | 2,775 |
| Providers | 22+ (OpenAI, Anthropic, Ollama, Gemini …) |
| Channels | 13 (Telegram, Discord, Slack, WhatsApp …) |
| Dependencies | 0 (besides libc + optional SQLite) |
| Language | Zig 0.15 |