{
  "generated_at": "2026-04-24T15:01:35.625676+00:00",
  "slug": "flows-litprotocol-com-api-flows-send-postcard-invoke",
  "title": "Lit Protocol \u00b7 Send Digital Postcard",
  "url": "https://flows.litprotocol.com/api/flows/send-postcard/invoke",
  "category": "tools",
  "summary": "Send personalized digital postcards with custom front and back images to specified recipients.",
  "seo": {
    "title": "x402 Postcard API | Digital Postcard Generation and Delivery",
    "description": "Send digital postcards with custom front/back images and personalized messages. Requires recipient, sender, and image URLs. 1 USDC per call on Base via x402."
  },
  "use_cases": [
    "Send branded digital postcards for marketing campaigns",
    "Deliver personalized greeting cards with custom imagery",
    "Automate postcard delivery for customer appreciation workflows"
  ],
  "ideal_buyer": "Marketing automation developers and customer engagement platforms needing programmable postcard delivery.",
  "example_prompt": "Send a postcard to this address with this front image URL and birthday message",
  "example_request_body": {
    "to": {
      "address": "0x..."
    },
    "from": {
      "name": "Sender"
    },
    "message": "Happy Birthday!",
    "back_image_url": {
      "url": "https://..."
    },
    "front_image_url": {
      "url": "https://..."
    }
  },
  "risk_notes": [],
  "pricing_sanity": {
    "flag": "expensive_outlier",
    "ratio": 50,
    "median_category_atomic": 20000
  },
  "pricing_review_required": false,
  "pricing_decimal_suspect": false,
  "trust_tier": "indexed_external",
  "accepts": [
    {
      "scheme": "exact",
      "network": "base",
      "pay_to": "0x19485415a3ed445dec86b2aec5aabb41fd516fcb",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "max_amount_required_atomic": "1000000",
      "max_timeout_seconds": 300,
      "verified": false,
      "hints": {
        "input": {
          "body": {
            "type": "object",
            "required": [
              "to",
              "message",
              "from",
              "front_image_url",
              "back_image_url"
            ],
            "properties": {
              "to": {
                "type": "object"
              },
              "from": {
                "type": "object"
              },
              "message": {
                "type": "object"
              },
              "back_image_url": {
                "type": "object"
              },
              "front_image_url": {
                "type": "object"
              }
            }
          },
          "method": "POST"
        }
      }
    }
  ],
  "origin": {
    "slug": "flows-litprotocol-com",
    "host": "flows.litprotocol.com",
    "title": "Lit Protocol Flows: Monetize Agent-Callable Code",
    "description": "A platform for developers to publish code that AI agents can discover and call. Hosts x402-payable endpoints where agents pay per execution.",
    "url": "https://flows.litprotocol.com",
    "favicon": "https://flows.litprotocol.com/favicon.svg"
  },
  "json_ld": {
    "@id": "https://x402all.com/resource/flows-litprotocol-com-api-flows-send-postcard-invoke",
    "url": "https://x402all.com/resource/flows-litprotocol-com-api-flows-send-postcard-invoke",
    "name": "Lit Protocol \u00b7 Send Digital Postcard",
    "@type": "WebAPI",
    "offers": {
      "url": "https://x402all.com/resource/flows-litprotocol-com-api-flows-send-postcard-invoke",
      "@type": "Offer",
      "price": "1",
      "availability": "https://schema.org/InStock",
      "priceCurrency": "USDC",
      "priceSpecification": {
        "@type": "UnitPriceSpecification",
        "price": "1.000000",
        "unitText": "call",
        "priceCurrency": "USDC"
      },
      "eligibleCustomerType": "Agent",
      "additionalProperty": [
        {
          "@type": "PropertyValue",
          "name": "paymentNetwork",
          "value": "base"
        },
        {
          "@type": "PropertyValue",
          "name": "paymentAsset",
          "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      ]
    },
    "sameAs": "https://flows.litprotocol.com/api/flows/send-postcard/invoke",
    "@context": "https://schema.org",
    "provider": {
      "@id": "https://x402all.com/server/flows-litprotocol-com",
      "url": "https://flows.litprotocol.com",
      "name": "Lit Protocol Flows: Monetize Agent-Callable Code",
      "@type": "Organization"
    },
    "identifier": "flows-litprotocol-com-api-flows-send-postcard-invoke",
    "description": "Send digital postcards with custom front/back images and personalized messages. Requires recipient, sender, and image URLs. 1 USDC per call on Base via x402.",
    "potentialAction": {
      "@type": "BuyAction",
      "target": "https://axon402.com/test-buy?resource=flows-litprotocol-com-api-flows-send-postcard-invoke",
      "description": "Test-buy this endpoint on AXON"
    },
    "applicationCategory": "tools"
  },
  "axon_deep_link": "https://axon402.com/test-buy?resource=flows-litprotocol-com-api-flows-send-postcard-invoke"
}