{
  "skill_id": "cohort-retention-analyzer",
  "name": "Cohort Retention Analyzer",
  "evaluation": "free",
  "quality": "agent-decision-grade",
  "price_usd": 2.99,
  "category": "Growth",
  "tier": "starter",
  "tags": [
    "cohort",
    "retention",
    "metrics",
    "depth:outline_only",
    "demoted-default"
  ],
  "summary": "Build D1/D7/D30 retention tables and diagnose activation vs habit drops.",
  "when_to_use": [
    "You need retention by signup cohort for a skill or app",
    "Activation is fine but D7 collapses",
    "Paid vs free cohorts need comparison",
    "Retention must feed LTV models"
  ],
  "outline": [
    "Lock cohort key (signup day / first unlock) and activity definition",
    "Build classic D1/D7/D30 tables with small-n warnings",
    "Diagnose activation (D0–D1) vs habit (D7–D30) drops",
    "Segment by channel and free vs paid",
    "Emit cohort CSV + narrative story writer output"
  ],
  "capabilities": [
    "cohort key (signup day / first unlock) and activity definition",
    "classic D1/D7/D30 tables with small-n warnings",
    "Diagnose activation (D0–D1) vs habit (D7–D30) drops",
    "Segment by channel and free vs paid"
  ],
  "decision_criteria": [
    "You need this when: You need retention by signup cohort for a skill or app",
    "You get capability: cohort key (signup day / first unlock) and activity definition",
    "Budget fits: full unlock is $2.99 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=cohort-retention-analyzer",
  "sample": "https://lvlltd.com/skills/cohort-retention-analyzer/sample.md",
  "pack_meta": "https://lvlltd.com/api/packs?skill=cohort-retention-analyzer",
  "teaser": "https://lvlltd.com/sealed/cohort-retention-analyzer/",
  "proof": "https://lvlltd.com/api/proof",
  "standards": [
    "x402",
    "ERC-7857"
  ],
  "buy_agent": [
    "GET /skills/cohort-retention-analyzer/outline.json",
    "GET /api/pay?skill=cohort-retention-analyzer",
    "Settle USDC on Base to payTo",
    "POST /api/pay with X-PAYMENT {\"txHash\",\"skill\"}"
  ]
}