We are tired of fixing builds because a package vanished, or chasing CVEs that could have been caught at install time. RepKG is the tool we wished existed five years ago.

curl -sSL https://repkg.io/bootstrap.sh | bash repkg mirror npm react npm config set registry http://localhost:4873 npm install react repkg verify --report RepKG – because your dependencies shouldn’t be a liability.

"name": "lodash", "version": "4.17.21", "algorithm": "sha256", "digest": "d8e...f3a", "source": "registry": "npm", "upstream_url": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz", "fetched_at": "2025-02-10T12:34:56Z" , "signatures": [ "key": "repkg-mirror-01", "sig": "MEU..." , "key": "sigstore", "sig": "MEY..." ], "merkle_proof": "root=... path=...", "timestamp": "rfc3161-timestamp.der"

Yes. Run repkg mirror against upstream registries yourself. The receipts are generated locally.