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mirrored listing x402 eip155:8453

Machine-to-machine invoicing: issue a signed invoice now (payerAddress, amountUsdc, option

Machine-to-machine invoicing: issue a signed invoice now (payerAddress, amountUsdc, optional lineItems/memo/dueBy); the payer settles it later at its own dynamically-priced /pay sub-resource, instead of paying synchronously like every other endpoint here.

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1000 (raw units)
price
2
calls / 30d
1
unique payers
2026-09-13
updated

Provider

lab.paidapis.net · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "amountUsdc": 0,
          "dueBy": "",
          "lineItems": "",
          "memo": "",
          "payerAddress": ""
        },
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "amountUsdc": 0,
          "dueBy": "",
          "invoiceId": "",
          "payUrl": "",
          "payerAddress": "",
          "signature": "",
          "signerAddress": "",
          "status": "pending"
        },
        "type": "json"
      }
    },
    "schema": {
      "properties": {
        "input": {
          "properties": {
            "body": {
              "properties": {
                "amountUsdc": {
                  "description": "Total amount due, in USDC.",
                  "type": "number"
                },
                "dueBy": {
                  "description": "ISO 8601 due date (default 7 days out).",
                  "type": "string"
                },
                "lineItems": {
                  "description": "JSON array of {\"description\",\"amountUsdc\"} objects, for record-keeping.",
                  "type": "string"
                },
                "memo": {
                  "description": "Free-text note.",
                  "type": "string"
                },
                "payerAddress": {
                  "description": "Wallet address expected to pay this invoice.",
                  "type": "string"
                }
              },
              "required": [
                "payerAddress",
                "amountUsdc"
              ],
              "type": "object"
            }
          }
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "amountUsdc": {
                  "type": "number"
                },
                "dueBy": {
                  "type": "string"
                },
                "invoiceId": {
                  "type": "string"
                },
                "payUrl": {
                  "type": "string"
                },
                "payerAddress": {
                  "type": "string"
                },
                "signature": {
                  "type": "string"
                },
                "signerAddress": {
                  "type": "string"
                },
                "status": {
                  "enum": [
                    "pending",
                    "paid"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            }
          }
        }
      }
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_xdmnqyvi"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "properties": {
        "a": {
          "description": "App builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        },
        "s": {
          "description": "Service builder codes",
          "items": {
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "maxItems": 11,
          "type": "array"
        },
        "w": {
          "description": "Wallet builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        }
      },
      "type": "object"
    }
  }
}

Use it

curl

curl "https://lab.paidapis.net/api/invoice/create"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://lab.paidapis.net/api/invoice/create");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://lab.paidapis.net/api/invoice/create")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/12407.json, and this resource appears in /discovery/resources and /discovery/search.