cf-pr-preview-actionA full Cloudflare preview for every PR

An isolated Worker, D1, KV, and R2 per pull request — auto-deployed, dev data synced, migrations applied, and torn down on close.

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How it works

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Fully isolated per PR

Worker, D1, KV, and R2 are all cloned per PR as <prefix>-pr-<N>. PRs never touch each other's data or your production resources.

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Auto teardown

Every resource is deleted when the PR closes or merges. No orphans, no bill creep — deploy vs teardown is auto-detected from the event.

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Sync dev data

Clone your dev D1 (schema + data) and R2 bucket into each preview, then run migrations on top — so previews mirror production-like state.

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Zero config duplication

The preview wrangler config is rendered from your existing wrangler.jsonc. Custom domains are dropped for a workers.dev URL.

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Run anything

pre-deploy / post-deploy / pre-teardown command hooks with the preview env injected — seed, smoke-test, or run any command against the isolated stack.

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Sticky PR comment

One upserted comment with the live preview URL, worker, and database — updated on every push and on teardown.