If OpenFang is the full agent OS, ZeroClaw is the agent microkernel. Runs on $10 hardware with <5MB RAM -- 99% less than OpenClaw. Boots in <10ms. Every subsystem (providers, channels, tools, memory) is trait-based and swappable. Built by Harvard/MIT/Sundai.Club community. Pre-built binaries for Linux, macOS, Windows. The "deploy agents on edge/IoT" use case that OpenClaw can't serve. At 24K stars in 3 weeks, this is the fastest-growing Rust agent project. [+BUILDER TOOL BOOST]