Building & appsClaude

⏪ Claude Code checkpoints: undo anything

The fear that stops non-developers from letting AI touch their projects is "what if it wrecks something?" Claude Code answers that with checkpoints and rewind: every change is undoable. Understand the safety net and you'll build twice as boldly.

The two-layer safety net

Layer 1: Checkpoints (built in)

Claude Code automatically checkpoints your files as it works. If an edit goes sideways, rewind: press Esc twice (or use the /rewind command) and you can jump the conversation — and your files — back to an earlier point. Bad idea? Two keys, gone.

Layer 2: Git (five minutes to learn, worth it)

Git is a permanent save-point system for your whole project, and you don't need to "know Git" — Claude Code runs it for you:

Set up version control for this project. Then, after each feature we finish, commit the work with a plain-English message describing what changed. If I ever ask to "go back to before [X]," take me there. Explain what you're doing the first few times so I learn the vocabulary.

The safe working rhythm

Commit before surgery. Before any big change: "commit what we have as 'working state before redesign.'"
One experiment at a time. Small changes are easy to unwind; ten simultaneous changes aren't.
Test, then commit. Works? Save it. Doesn't? Rewind. Repeat.

When to use which

Rewind: "the last few minutes went wrong" — conversation-level undo. Git: "yesterday's version was better" or "which change broke this?" — project-level history. Together they mean no mistake is expensive, which changes how ambitious you can afford to be.

Checkpoints cover what Claude edits — not everything. Databases, external services, and files outside the project need their own backups. Ask: "before we start, what in this project would NOT be restored by rewind, and how do we back that up?"

Reframe the risk: with a safety net this good, the expensive mistake isn't breaking something — it's building timidly. Try the ambitious version; you're always two keystrokes from safety.

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