{
  "operationId": "create-x402-signature",
  "method": "POST",
  "path": "/v2/signature/x402/",
  "summary": "Create x402 signature",
  "description": "Create a signature for a given x402 resource using the specified wallet.",
  "tags": [
    "Onchain"
  ],
  "parameters": [
    {
      "name": "",
      "in": "",
      "required": false,
      "description": ""
    },
    {
      "name": "x-api-key",
      "in": "header",
      "required": true,
      "description": "",
      "schema": {
        "type": "string"
      }
    }
  ],
  "requestBody": {
    "required": true,
    "schema": {
      "properties": {
        "payment_requirements": {
          "properties": {
            "accepts": {
              "items": {
                "properties": {
                  "asset": {
                    "description": "Ethereum address",
                    "example": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
                    "pattern": "^0x[a-fA-F0-9]{40}$",
                    "title": "EthAddress",
                    "type": "string"
                  },
                  "description": {
                    "type": "string"
                  },
                  "extra": {
                    "additionalProperties": {},
                    "nullable": true,
                    "type": "object"
                  },
                  "maxAmountRequired": {
                    "type": "string"
                  },
                  "maxTimeoutSeconds": {
                    "type": "number"
                  },
                  "mimeType": {
                    "type": "string"
                  },
                  "network": {
                    "enum": [
                      "base",
                      "base-sepolia"
                    ],
                    "type": "string"
                  },
                  "outputSchema": {
                    "additionalProperties": {},
                    "nullable": true,
                    "type": "object"
                  },
                  "payTo": {
                    "description": "Ethereum address",
                    "example": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
                    "pattern": "^0x[a-fA-F0-9]{40}$",
                    "title": "EthAddress",
                    "type": "string"
                  },
                  "resource": {
                    "format": "uri",
                    "type": "string"
                  },
                  "scheme": {
                    "enum": [
                      "exact"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "scheme",
                  "network",
                  "maxAmountRequired",
                  "asset",
                  "payTo",
                  "resource",
                  "description",
                  "maxTimeoutSeconds"
                ],
                "type": "object"
              },
              "minItems": 1,
              "type": "array"
            },
            "x402Version": {
              "anyOf": [
                {
                  "enum": [
                    1
                  ],
                  "type": "number"
                },
                {
                  "enum": [
                    2
                  ],
                  "type": "number"
                }
              ]
            }
          },
          "required": [
            "x402Version",
            "accepts"
          ],
          "type": "object"
        }
      },
      "required": [
        "payment_requirements"
      ],
      "type": "object"
    },
    "example": null
  },
  "responses": {
    "200": {
      "description": "Success",
      "schema": {
        "properties": {
          "network": {
            "enum": [
              "base",
              "base-sepolia"
            ],
            "type": "string"
          },
          "payload": {
            "properties": {
              "authorization": {
                "properties": {
                  "from": {
                    "$ref": "#/components/schemas/EthAddress"
                  },
                  "nonce": {
                    "pattern": "^0x[a-fA-F0-9]{64}$",
                    "type": "string"
                  },
                  "to": {
                    "$ref": "#/components/schemas/EthAddress"
                  },
                  "validAfter": {
                    "type": "string"
                  },
                  "validBefore": {
                    "type": "string"
                  },
                  "value": {
                    "type": "string"
                  }
                },
                "required": [
                  "from",
                  "to",
                  "value",
                  "validAfter",
                  "validBefore",
                  "nonce"
                ],
                "type": "object"
              },
              "signature": {
                "pattern": "^0x[a-fA-F0-9]{130}$",
                "type": "string"
              }
            },
            "required": [
              "signature",
              "authorization"
            ],
            "type": "object"
          },
          "scheme": {
            "enum": [
              "exact"
            ],
            "type": "string"
          },
          "x402Version": {
            "anyOf": [
              {
                "enum": [
                  1
                ],
                "type": "number"
              },
              {
                "enum": [
                  2
                ],
                "type": "number"
              }
            ]
          }
        },
        "required": [
          "x402Version",
          "scheme",
          "network",
          "payload"
        ],
        "type": "object"
      },
      "example": null
    },
    "400": {
      "description": "Bad Request",
      "schema": {
        "$ref": "#/components/schemas/ErrorRes"
      },
      "example": null
    },
    "401": {
      "description": "Unauthorized",
      "schema": {
        "$ref": "#/components/schemas/ErrorRes"
      },
      "example": null
    },
    "403": {
      "description": "Forbidden",
      "schema": {
        "$ref": "#/components/schemas/ErrorRes"
      },
      "example": null
    },
    "500": {
      "description": "Server Error",
      "schema": {
        "$ref": "#/components/schemas/ErrorRes"
      },
      "example": null
    }
  }
}