{
  "fixtureVersion": "2026-07-26.1",
  "status": "ready_for_downstream_run",
  "articleSlug": "chatgpt-prompts-for-marketing",
  "synthetic": true,
  "license": "CC0-1.0",
  "decisionQuestion": "Does a source-ledger prompt reduce unsupported marketing claims when the product facts and target model stay fixed?",
  "sourceLedger": {
    "productName": "Northstar Cost Lens",
    "productType": "Fictional API cost dashboard",
    "audience": "Engineering leaders evaluating model and environment spend",
    "approvedFacts": [
      "Breaks API spend down by model and environment.",
      "Supports CSV export.",
      "Supports saved filters.",
      "Launch date is July 30."
    ],
    "prohibitedClaims": [
      "Customer adoption or customer counts.",
      "Savings percentages or guaranteed savings.",
      "Performance, speed, or reliability improvements.",
      "Testimonials, awards, or market leadership."
    ],
    "unknowns": [
      "Price.",
      "Trial availability.",
      "Number of integrations.",
      "Historical customer results."
    ],
    "requiredCallToAction": "Open the dashboard",
    "humanReviewBoundary": "Tone, usefulness, and brand fit still require a human editor."
  },
  "runContract": {
    "executionModel": null,
    "executionModelVersion": null,
    "temperature": null,
    "outputLimit": null,
    "runsPerPrompt": null,
    "selectionRule": "Publish every frozen case, including ties, regressions, provider failures, and outputs that still need editing."
  },
  "cases": [
    {
      "id": "marketing_landing_page",
      "deliverable": "Landing-page hero",
      "roughPrompt": "Write a high-converting landing-page hero for Northstar Cost Lens.",
      "format": "One headline, one subhead of at most 45 words, three proof bullets, and one call to action.",
      "acceptanceCriteria": [
        "Names Northstar Cost Lens.",
        "Uses at least three approved facts.",
        "Contains no prohibited or unknown claim.",
        "Uses the exact call to action once.",
        "Contains one headline, one subhead, and three proof bullets."
      ],
      "reviewMethod": "deterministic_fact_and_format_checks_plus_human_tone_review"
    },
    {
      "id": "marketing_launch_email",
      "deliverable": "Launch email",
      "roughPrompt": "Write an exciting product launch email for Northstar Cost Lens.",
      "format": "One subject line, a body of at most 160 words, and one call to action.",
      "acceptanceCriteria": [
        "Names Northstar Cost Lens.",
        "Uses all four approved facts.",
        "Contains no prohibited or unknown claim.",
        "Uses the exact call to action once.",
        "Keeps the body at or below 160 words."
      ],
      "reviewMethod": "deterministic_fact_and_format_checks_plus_human_tone_review"
    },
    {
      "id": "marketing_social_post",
      "deliverable": "LinkedIn launch post",
      "roughPrompt": "Create a viral LinkedIn post announcing Northstar Cost Lens.",
      "format": "At most 100 words, no hashtags, and one call to action.",
      "acceptanceCriteria": [
        "Names Northstar Cost Lens.",
        "Uses at least three approved facts.",
        "Contains no prohibited or unknown claim.",
        "Uses the exact call to action once.",
        "Stays at or below 100 words and contains no hashtag."
      ],
      "reviewMethod": "deterministic_fact_and_format_checks_plus_human_tone_review"
    },
    {
      "id": "marketing_positioning",
      "deliverable": "Positioning statement",
      "roughPrompt": "Position Northstar Cost Lens as the best API cost tool on the market.",
      "format": "One positioning sentence followed by three evidence bullets.",
      "acceptanceCriteria": [
        "Names the engineering-leader audience.",
        "Names Northstar Cost Lens.",
        "Uses at least three approved facts.",
        "Contains no prohibited, unknown, or competitor claim.",
        "Contains one positioning sentence and three evidence bullets."
      ],
      "reviewMethod": "deterministic_fact_and_format_checks_plus_human_positioning_review"
    }
  ]
}