Cloudflare R2 Restic Backup

This skill should be used when setting up a nightly/periodic encrypted backup of a directory (an app's state/data dir, a database dump, an agent's working directory) to a Cloudflare R2 bucket via restic, or when debugging an existing restic-to-R2 systemd timer job. Distinct from the `cloudflare-r2-rclone-backup` skill — that one covers plain `rclone sync` (mirrors a tree as-is, no encryption/dedup/snapshots); this one covers `restic` (client-side encrypted, deduplicated, snapshotted, with retention/pruning) — pick restic whenever the source is app state you'd want point-in-time recovery of, not just an already-static archive worth mirroring. Trigger phrases include "restic backup to R2", "restic R2 repository", "nightly restic backup", "restic systemd timer", "restic keep-daily keep-weekly prune", "restic init repository", "restic check integrity", "restic restore verify", "restic unable to open cache", "R2 access key for restic", "AWS_ACCESS_KEY_ID restic env", "credential assert guard rail ansible", "restic backup credential not yet populated".

mkdir -p ~/.claude/skills/cloudflare-r2-restic-backup
curl -L https://claudskills.com/skills/cloudflare-r2-restic-backup/SKILL.md \
  -o ~/.claude/skills/cloudflare-r2-restic-backup/SKILL.md

@misc{cloudflare-r2-restic-backup-2026,
  author    = {jackson2w},
  title     = {Cloudflare R2 Restic Backup [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/cloudflare-r2-restic-backup/}
}