{
  "skill_id": "sealed-payload-integrity-checker",
  "name": "Sealed Payload Integrity Checker",
  "evaluation": "free",
  "quality": "agent-decision-grade",
  "price_usd": 3.99,
  "category": "Trust",
  "tier": "standard",
  "tags": [
    "integrity",
    "hash",
    "erc-7857",
    "trust",
    "x402"
  ],
  "summary": "Verify data_hash matches delivered sealed content before trusting an unlock.",
  "when_to_use": [
    "Agent receives sealed_pack.files and must trust them",
    "Auditing that teaser paths never leak full payloads",
    "Dispute where buyer claims files differ from listing"
  ],
  "outline": [
    "Record advertised data_hash / pack_meta from listing",
    "Canonicalize file list (paths + bytes) after unlock",
    "Compute hash tree or concatenated digest per policy",
    "Compare; on mismatch quarantine files and open dispute note",
    "Emit integrity-report.json for ledger attachment"
  ],
  "capabilities": [
    "Post-unlock hash procedure",
    "Mismatch quarantine steps",
    "Dispute evidence pack",
    "Teaser vs sealed path awareness"
  ],
  "decision_criteria": [
    "You need this when: Agent receives sealed_pack.files and must trust them",
    "You get capability: Post-unlock hash procedure",
    "Budget fits: full unlock is $3.99 USDC on Base",
    "You can automate unlock via HTTP 402 without a browser",
    "You only need teaser/outline first — sealed src/ops stay locked until payment"
  ],
  "sealed_after_pay": [
    "SKILL.md (teaser public)",
    "agent-install.json (public meta)",
    "src/index.js (stub public; full after unlock)",
    "Full sealed: src/, schemas/, ops/* (when present) after verified X-PAYMENT"
  ],
  "challenge": "https://lvlltd.com/api/pay?skill=sealed-payload-integrity-checker",
  "sample": "https://lvlltd.com/skills/sealed-payload-integrity-checker/sample.md",
  "pack_meta": "https://lvlltd.com/api/packs?skill=sealed-payload-integrity-checker",
  "teaser": "https://lvlltd.com/sealed/sealed-payload-integrity-checker/",
  "proof": "https://lvlltd.com/api/proof",
  "standards": [
    "x402",
    "ERC-7857"
  ],
  "buy_agent": [
    "GET /skills/sealed-payload-integrity-checker/outline.json",
    "GET /api/pay?skill=sealed-payload-integrity-checker",
    "Settle USDC on Base to payTo",
    "POST /api/pay with X-PAYMENT {\"txHash\",\"skill\"}"
  ]
}