{
  "slug": "wrangler-build-emits-a-build-output-api-directory-e980c0a12de2",
  "title": "wrangler build emits a Build Output API directory",
  "tools": [
    "wrangler"
  ],
  "tags": [
    "agent"
  ],
  "introduced_at": "2026-06-18T15:13:43.000Z",
  "announced_at": "2026-06-18T15:13:43.000Z",
  "effective_at": null,
  "date_basis": "source-publication",
  "status": "unknown",
  "how": {
    "incantation": "When building with `--experimental-new-config`, run `wrangler build --experimental-new-config --experimental-cf-build-output` to emit the self-contained Build Output API directory under `.cloudflare/output/v0/`.",
    "examples": [
      "wrangler build --experimental-new-config --experimental-cf-build-output"
    ],
    "gotchas": [
      "Version: 4.102.0",
      "Availability: experimental",
      "--experimental-new-config (required): Use alongside `--experimental-cf-build-output`.",
      "--experimental-cf-build-output (required): Make `wrangler build` emit the Build Output API directory under `.cloudflare/output/v0/`; use alongside `--experimental-new-config`.",
      "Use `--experimental-cf-build-output` alongside `--experimental-new-config`."
    ]
  },
  "why_it_matters": "Build a project using the new configuration path and produce a self-contained Build Output API directory.",
  "before": "The build delegated to `wrangler deploy --dry-run`.",
  "sources": [
    "https://github.com/cloudflare/workers-sdk/releases/tag/wrangler%404.102.0"
  ],
  "rank": 0.90027,
  "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": "recover-20261008",
    "verdict_id": "recover-20261008:recover-20261008-8054c30039c2bd91-1:gate",
    "evidence_hash": "c368beee220036059b06add993354ee904f2d6ca6965adda64127bc41c1248d1"
  },
  "review": {
    "draft_hash": "4584713b05d0168c309929a4430f2227680173a60aa3892fe83ec1493d0380ed",
    "reviewer": "publication-gate",
    "reviewed_at": "2026-10-07T00:00:00.000Z",
    "decision": "recover-20261008:gate",
    "reason": "2 of 3 judge runs approved with p_yes >= 0.9 (mean 0.90 >= 0.9; 2 needed) and Jev gave 0.69 (>= 0.6 needed)."
  }
}