Run your first microbuild in 5 minutes
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Chunk sidecars let AI coding agents like Claude Code run fast, scoped validation loops (microbuilds) before pushing to CI. The tutorial walks through installing the Chunk CLI, cloning a React demo repo, authenticating with a CircleCI token, and running chunk init to auto-detect the Jest test suite. A deliberate failure is planted in the code, then a single agent prompt triggers a remote microVM test run, captures the stack trace, feeds it back to the agent, and the agent fixes and re-validates — all without a git push or full CI run. Microbuilds are available on all CircleCI plans including free.
Table of contents
PrerequisitesSet upPlant a failureRun the microbuildInside the validation loopTry Chunk sidecars on a real projectSort: