NullClaw (nullclaw/nullclaw) is the “fastest, smallest, and fully autonomous AI assistant infrastructure” written in Zig — a systems programming language with no garbage collector and zero runtime.
NullClaw achieves a ~678 KB binary and ~1 MB RAM usage, booting in under 8ms. It has approximately 6,830 stars and 812 forks as of the latest release (March 21, 2026). Supports Linux x86_64, macOS arm64, and macOS x86_64.
Features a `nullclaw migrate openclaw` command for config import, and includes Novita AI provider support.