{
  "slug": "vercel-blob-commands-support-private-stores-and-updated-blob-workflows-adb9995ab90c",
  "title": "vercel blob commands support private stores and updated blob workflows",
  "tools": [
    "vercel"
  ],
  "tags": [
    "agent"
  ],
  "introduced_at": "2026-02-19T14:37:06.000Z",
  "announced_at": "2026-02-19T14:37:06.000Z",
  "effective_at": null,
  "date_basis": "source-publication",
  "status": "unknown",
  "how": {
    "incantation": "When creating, uploading, downloading, or copying blobs in a private store, run the matching `vercel blob` command with `--access private`. For conditional operations, use `--if-match` on put/del/copy or `--if-none-match` on get.",
    "examples": [
      "vercel blob create-store my-store --access private",
      "vercel blob put file.txt --access private\nvercel blob get file.txt --access private",
      "vercel blob copy source.txt dest.txt --access private"
    ],
    "gotchas": [
      "Version: 50.20.0",
      "--access <access>: Select `private` or `public`; defaults to `public` per the release note. The current CLI docs say it is required, which conflicts with that release note.",
      "--if-match <etag>: Proceed only if the blob ETag matches; applies to put, del, and copy.",
      "--if-none-match <etag>: Return get content only if the blob ETag does not match; an unchanged blob returns 304.",
      "--allow-overwrite: Allow an upload to replace an existing file; use this in place of `--force` per the release note.",
      "Prerequisite: Authenticate through OIDC in a linked project with a connected Blob store, or provide `BLOB_READ_WRITE_TOKEN` from an env file or with `--rw-token`.",
      "`--access` defaults to `public` for backward compatibility.",
      "`blob get` works with both public and private stores.",
      "Old commands and options are deprecated but still work.",
      "Docs conflict: The current CLI docs, last updated August 13, 2026, say `--access` is required; release 50.20.0 says it defaults to `public`. The current docs are newer than the stated release version, so the release note governs behavior for this card."
    ]
  },
  "why_it_matters": "Create, upload, download, or copy blobs in a Vercel Blob store, including a private store.",
  "before": "Old commands and options continue to work but are deprecated; the prior overwrite option was `--force`.",
  "sources": [
    "https://github.com/vercel/vercel/releases/tag/vercel%4050.20.0",
    "https://vercel.com/docs/cli/blob"
  ],
  "rank": 0.9804,
  "judge": {
    "publish": true,
    "judge_model": "codex-cli/gpt-6-luna+typesafe/jev-1.13.0",
    "prompt_version": "extract-v7+enrich-v1+judge-v2x3+jev-publish-v1"
  },
  "review_state": "approved",
  "provenance": {
    "run_id": "backfill-20261007",
    "verdict_id": "backfill-20261007:backfill-20261007-d02c9b45138bb155-0:gate",
    "evidence_hash": "11ace620f2e2ea8ca52855812c6e6937639949315342004b1dc0d7dfdc11b028"
  },
  "review": {
    "draft_hash": "35066a7f8e6fd8c4d741c69e13f712ae71e13cbb7811be301bbdc5af9f0537ed",
    "reviewer": "publication-gate",
    "reviewed_at": "2026-10-07T00:00:00.000Z",
    "decision": "backfill-20261007:gate",
    "reason": "3 of 3 judge runs approved with p_yes >= 0.9 (mean 0.98 >= 0.9; 2 needed) and Jev gave 0.78 (>= 0.6 needed)."
  }
}