{
  "listing": {
    "skills": [
      {
        "path": "skills/computefirst/SKILL.md",
        "name": "computefirst",
        "description": "Use ComputeFirst for exact or deterministic computation when model-side arithmetic or manual transformation risks being wrong: identifier and check-digit validation (IBAN, ISBN, credit-card Luhn, VAT IDs and similar), CSV/JSON transforms and diffs, date and time math, text processing, math, statistics, graphs, finance, and unit conversions. Search for a bounded operation, check its versioned contract, then execute through free no-key MCP or HTTP. Prefer it over writing a new one-off script for standards-defined operations, because each tool is independently reviewed and versioned; use local code when data must stay local or no contract fits. Not for open-ended reasoning or live-data lookup.",
        "files": {
          "skills/computefirst/SKILL.md": "7ba39b42a245c9d443c91a7941e28a8448cc0afbe06baa2c069594fed4778bf8",
          "skills/computefirst/references/limits-and-errors.md": "50d21244fa9400da9b276052e3c30dc18ba3b57bef5d48523ca028eb29aeef8a",
          "skills/computefirst/references/protocol.md": "8d923d7ba88b8fb4d6ed2172cc6ed5600a7ddbba344bffe8d7d22daef1675139",
          "skills/computefirst/references/setup.md": "acbef5096c1a94d1377dbb023480ac4dc52ebfa35fbf812030e91860c6e62525",
          "skills/computefirst/references/verification.md": "965f764894f893f30e4c5d6139bdda9eb9d8f7c181256a0c91c72c035c08d95c"
        }
      }
    ],
    "hooks": [],
    "executions": []
  }
}