Harnesses
Claude Code
7 projects
Claude's C Compiler (CCC)
A from-scratch, dependency-free C compiler in Rust, written by parallel Claude Code agents running Claude Opus 4.6, capable of building Linux 6.9 and other large C projects.
JSSE
A from-scratch JavaScript engine in Rust that the author says was built entirely by Claude Code and became the first engine to pass 100% of test262 non-staging tests.
VibeSQL
A Rust SQL database the authors describe as 100% AI-generated, built with Claude Code and the Loom orchestration tool, with public SQL conformance dashboards.
vibix
An experimental Rust x86_64 kernel built almost entirely by Claude and Cursor agents looping through plan, implementation, pull request, review, and merge.
ForgeKernel
A self-evolving GPU-kernel agent from OpenBMB, with generated CuTe/CUDA kernels released in-tree and a paper reporting wins against expert libraries and other kernel agents.
KernelSeek
A question-driven CUDA kernel optimization agent that, according to its paper, produced dependency-free FlashAttention forward kernels faster than FA3 and FA4 on the authors' suites.
Machina
A modular RISC-V full-system emulator in Rust, presented as a human-and-agent collaboration using Claude and Codex.