Actions | ComputeSDK
ComputeSDK Actions replaces the execution layer of GitHub Actions: keep your workflows, choose the providers and regions they run on, and give agents ...
CI/CD Tool
Summary
Preloop is a local and self-hosted GitHub Actions engine that executes unmodified workflows on hardware-isolated microVMs with 300ms resume times. It provides DAP-powered debugging to pause failed steps, inspect live job context, and retry individual steps without requiring a push to the remote repository.
Highlights
- Runs unmodified .github/workflows on hardware-isolated microVMs across Windows, macOS, and Linux with 300ms resume times
- DAP-powered debugging allows pausing failed steps, inspecting live job context, and retrying individual steps locally without a push
- Rust-based runner is 36x smaller in install size and peaks at 19x lower memory than the official runner while speaking the official actions/runner protocol
- Can run CI against uncommitted changes, respecting .gitignored and untracked files
- Includes a webhook watchdog that detects drift and reconciles commits against the GitHub API, useful when GitHub's webhook service is down
auto-generated
Context
Audience
Developers and DevOps engineers who want faster local CI feedback, debug failed pipeline steps interactively, or reduce reliance on GitHub-hosted runner minutes
DomainCI/CD and DevOps
Formatopen source project with CLI tool
Accessopen source, installable via Homebrew, npm, mise, or shell script
Source Overview
Preloop is a local and self-hosted GitHub Actions engine that executes unmodified .github/workflows on hardware-isolated microVMs (Windows, macOS, Linux) with 300ms resume times.
It provides DAP-powered debugging to pause failed steps, inspect live job context, and retry individual steps without a push. A Rust-based runner replacement installs 36x smaller and peaks at 19x lower memory while speaking the official actions/runner protocol.
Topics
Related
GitHub Actionsactions/runner protocolmicroVMs (Firecracker, QEMU)Debug Adapter Protocol (DAP)Self-hosted runnersRust CLI development
