{
  "version": "arbitova-spec-v1",
  "mode": "programmatic",
  "title": "Summarize URL → return 200-word JSON summary",
  "acceptance": {
    "description": "Given an input URL, the seller agent returns a JSON object { summary: string, wordCount: int, language: string } where summary is 180-220 words in the requested language.",
    "deliverables": [
      "JSON response matching the schema at https://example.com/summary-schema.json"
    ]
  },
  "check": {
    "endpoint": "https://verifier.example.com/arbitova/check",
    "method": "POST",
    "timeoutSeconds": 30,
    "authScheme": "bearer"
  }
}