{
  "name": "LettersByLetter",
  "legalEntity": "Rainmaker LLC d/b/a LettersByLetter.com",
  "origin": "https://lettersbyletter.com",
  "environment": "live",
  "fulfillmentEnabled": true,
  "fulfillmentProvider": "LetterStream",
  "lastVerified": "2026-09-09",
  "lastVerifiedNote": "LetterStream hash-auth live office test succeeded (batch office-test, paper W, $1.19).",
  "mailClasses": [
    "first_class",
    "certified",
    "postcard"
  ],
  "pricing": {
    "currency": "USD",
    "firstClass": {
      "firstPageCents": 149,
      "extraPageCents": 25
    },
    "certified": {
      "baseCents": 1299,
      "extraPageCents": 25
    },
    "postcard": {
      "pieceCents": 199
    },
    "electronicReturnReceiptCents": 240
  },
  "keys": {
    "productionPrefix": "lbl_live_",
    "stagingPrefix": "lbl_test_",
    "stagingNeverMails": true,
    "note": "Platform mailing is live. Staging keys (lbl_test_) are a developer sandbox and never purchase postage."
  },
  "x402": {
    "mockFacilitatorWhenUnset": true,
    "note": "A mock x402 facilitator is used only when X402_FACILITATOR_URL is unset (local/dev).",
    "stables": [
      {
        "symbol": "USDC",
        "network": "eip155:8453",
        "networkLabel": "Base",
        "live": true
      },
      {
        "symbol": "USDC",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "networkLabel": "Solana",
        "live": true
      }
    ]
  },
  "mcp": {
    "guestX402": true,
    "cardCheckout": true,
    "collectsPan": false
  },
  "addressValidation": {
    "provider": "stub",
    "note": "Format and ZIP-shape check only. Not USPS CASS."
  },
  "links": {
    "docs": "https://lettersbyletter.com/docs",
    "openapi": "https://lettersbyletter.com/api/v1/openapi.json",
    "mcp": "https://lettersbyletter.com/api/mcp",
    "llms": "https://lettersbyletter.com/llms.txt",
    "status": "https://lettersbyletter.com/status",
    "statusJson": "https://lettersbyletter.com/status.json"
  },
  "health": {
    "overall": "down",
    "checkedAt": "2026-09-13T21:56:30.738Z",
    "probes": [
      {
        "id": "app",
        "label": "LettersByLetter process",
        "status": "operational",
        "detail": "This request reached the Next.js server.",
        "checkedAt": "2026-09-13T21:56:30.738Z"
      },
      {
        "id": "app_hosting",
        "label": "App Hosting",
        "status": "operational",
        "detail": "This process is serving on Cloud Run service lettersbyletter.",
        "checkedAt": "2026-09-13T21:56:30.738Z"
      },
      {
        "id": "firebase",
        "label": "Firebase / App Hosting identity",
        "status": "operational",
        "detail": "Firebase Admin initialized in this process.",
        "checkedAt": "2026-09-13T21:56:30.738Z"
      },
      {
        "id": "letterstream",
        "label": "LetterStream",
        "status": "down",
        "detail": "Improper submission format: (Auth valid. Additional arguments did not form a valid request. [a] [h] [t] [debug] )",
        "checkedAt": "2026-09-13T21:56:30.738Z"
      },
      {
        "id": "workspace_store",
        "label": "Workspace store",
        "status": "operational",
        "detail": "Readable. 1 org in this instance.",
        "checkedAt": "2026-09-13T21:56:30.738Z"
      }
    ]
  }
}