Preloop
Agent-native CI engine that runs GitHub Actions locally or self-hosted
Visit preloop.dev ↗What is Preloop?
Preloop is a CI engine built in Rust that executes GitHub Actions workflows on hardware-isolated microvms, designed for rapid verification of AI-generated code. It runs on macOS, Linux, and Windows, with each job booting in under 200 milliseconds. The same engine works locally or self-hosted, ensuring workflows that pass on your machine pass in CI.
The platform supports existing GitHub Actions workflows unchanged, including matrix builds, reusable workflows, and OIDC. Key features include pause-on-failure debugging with shell access, live step-level retries, 95% filesystem caching after first run, and the ability to test uncommitted changes. It also provides a Rust-equivalent runner as an alternative to the official GitHub runner.
Momentum
Daily activity over the last 30 days: upvotes, unique visits, new GitHub stars and Hacker News points.
How do we know it's vibe coded?
vibetrend discovered Preloop automatically. Evidence: GitHub preloopdev/preloop; repo has AGENTS.md. View source.
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