{
  "schema_version": 1,
  "suite": "anthropic-cowork-formula-matrix-probe",
  "protocol": "Unaltered Anthropic bundled xlsx.skill scripts/recalc.py on a six-formula fixture.",
  "runtime_boundary": "Local Cowork app bundles the skill but not its sandbox LibreOffice build; this probe uses Homebrew LibreOffice 26.2.5.2. Skill behavior is exact; formula behavior is runtime-specific.",
  "identities": {
    "source_sha256": "93ee8e7e0430fe838774f33858408a6deec4828b126d30df98fbd8f1bcf840a4",
    "recalc_py_sha256": "288cc0b86b15f012f4928ab56e532f8cb11a1cc1f9e0ddb686295b3e36f50d03",
    "xlsx_skill_sha256": "591424013a810a747856c004938f2747e88dbc14ac25de0a91b573842d381c70",
    "claude_desktop_version": "1.40609.0",
    "libreoffice_version": "LibreOffice 26.2.5.2 cd7284b4cbbfeb507e630c1aac019f4157393acb",
    "libreoffice_launcher_sha256": "8bde0caf3c901ce87e9baa6df5ec6e79ede4b629423195f6e59c8c6a681efddb",
    "python": "3.13.9 (main, Oct 28 2025, 12:02:14) [Clang 20.1.4 ]"
  },
  "iterations": 1,
  "elapsed_seconds": 3.905,
  "returncode": 0,
  "stdout": {
    "status": "errors_found",
    "total_errors": 5,
    "error_summary": {
      "#NAME?": {
        "count": 5,
        "locations": [
          "Calc!E2",
          "Calc!E3",
          "Calc!E4",
          "Calc!E8",
          "Calc!E12"
        ]
      }
    },
    "total_formulas": 6
  },
  "stderr": "",
  "anchor_results": {
    "E1": {
      "formula": "=SUM(A1:A4)",
      "cached_value": 100
    },
    "E2": {
      "formula": "=xlookup(30,A1:A4,C1:C4)",
      "cached_value": "#NAME?"
    },
    "E3": {
      "formula": "=let(x,5,x*2)",
      "cached_value": "#NAME?"
    },
    "E4": {
      "formula": "=filter(A1:A4,B1:B4=1)",
      "cached_value": "#NAME?"
    },
    "E8": {
      "formula": "=unique(C1:C4)",
      "cached_value": "#NAME?"
    },
    "E12": {
      "formula": "=sequence(3,1,1,1)",
      "cached_value": "#NAME?"
    }
  },
  "spill_values": {
    "E4": "#NAME?",
    "E5": null,
    "E6": null,
    "E7": null,
    "E8": "#NAME?",
    "E9": null,
    "E10": null,
    "E11": null,
    "E12": "#NAME?",
    "E13": null,
    "E14": null
  }
}