Sign EIP-712 typed data via end user EVM account

Signs EIP-712 typed data with the given end user EVM account.

POST /v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data

Sign EIP-712 typed data via end user EVM account

cURL

curl --request POST \
  --url https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "address": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
  "typedData": {
    "domain": {
      "name": "Permit2",
      "chainId": 1,
      "verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
    },
    "types": {
      "EIP712Domain": [
        {
          "name": "name",
          "type": "string"
        },
        {
          "name": "chainId",
          "type": "uint256"
        },
        {
          "name": "verifyingContract",
          "type": "address"
        }
      ],
      "PermitTransferFrom": [
        {
          "name": "permitted",
          "type": "TokenPermissions"
        },
        {
          "name": "spender",
          "type": "address"
        },
        {
          "name": "nonce",
          "type": "uint256"
        },
        {
          "name": "deadline",
          "type": "uint256"
        }
      ],
      "TokenPermissions": [
        {
          "name": "token",
          "type": "address"
        },
        {
          "name": "amount",
          "type": "uint256"
        }
      ]
    },
    "primaryType": "PermitTransferFrom",
    "message": {
      "permitted": {
        "token": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
        "amount": "1000000"
      },
      "spender": "0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf",
      "nonce": "123456",
      "deadline": "1717123200"
    }
  },
  "walletSecretId": "e051beeb-7163-4527-a5b6-35e301529ff2"
}
'

import requests

url = "https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data"

payload = {
    "address": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "typedData": {
        "domain": {
            "name": "Permit2",
            "chainId": 1,
            "verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
        },
        "types": {
            "EIP712Domain": [
                {
                    "name": "name",
                    "type": "string"
                },
                {
                    "name": "chainId",
                    "type": "uint256"
                },
                {
                    "name": "verifyingContract",
                    "type": "address"
                }
            ],
            "PermitTransferFrom": [
                {
                    "name": "permitted",
                    "type": "TokenPermissions"
                },
                {
                    "name": "spender",
                    "type": "address"
                },
                {
                    "name": "nonce",
                    "type": "uint256"
                },
                {
                    "name": "deadline",
                    "type": "uint256"
                }
            ],
            "TokenPermissions": [
                {
                    "name": "token",
                    "type": "address"
                },
                {
                    "name": "amount",
                    "type": "uint256"
                }
            ]
        },
        "primaryType": "PermitTransferFrom",
        "message": {
            "permitted": {
                "token": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
                "amount": "1000000"
            },
            "spender": "0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf",
            "nonce": "123456",
            "deadline": "1717123200"
        }
    },
    "walletSecretId": "e051beeb-7163-4527-a5b6-35e301529ff2"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
    typedData: {
      domain: {
        name: 'Permit2',
        chainId: 1,
        verifyingContract: '0x000000000022D473030F116dDEE9F6B43aC78BA3'
      },
      types: {
        EIP712Domain: [
          {name: 'name', type: 'string'},
          {name: 'chainId', type: 'uint256'},
          {name: 'verifyingContract', type: 'address'}
        ],
        PermitTransferFrom: [
          {name: 'permitted', type: 'TokenPermissions'},
          {name: 'spender', type: 'address'},
          {name: 'nonce', type: 'uint256'},
          {name: 'deadline', type: 'uint256'}
        ],
        TokenPermissions: [{name: 'token', type: 'address'}, {name: 'amount', type: 'uint256'}]
      },
      primaryType: 'PermitTransferFrom',
      message: {
        permitted: {token: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', amount: '1000000'},
        spender: '0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf',
        nonce: '123456',
        deadline: '1717123200'
      }
    },
    walletSecretId: 'e051beeb-7163-4527-a5b6-35e301529ff2'
  })
};

fetch('https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'address' => '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
    'typedData' => [
        'domain' => [
                'name' => 'Permit2',
                'chainId' => 1,
                'verifyingContract' => '0x000000000022D473030F116dDEE9F6B43aC78BA3'
        ],
        'types' => [
                'EIP712Domain' => [
                                [
                                                                'name' => 'name',
                                                                'type' => 'string'
                                ],
                                [
                                                                'name' => 'chainId',
                                                                'type' => 'uint256'
                                ],
                                [
                                                                'name' => 'verifyingContract',
                                                                'type' => 'address'
                                ]
                ],
                'PermitTransferFrom' => [
                                [
                                                                'name' => 'permitted',
                                                                'type' => 'TokenPermissions'
                                ],
                                [
                                                                'name' => 'spender',
                                                                'type' => 'address'
                                ],
                                [
                                                                'name' => 'nonce',
                                                                'type' => 'uint256'
                                ],
                                [
                                                                'name' => 'deadline',
                                                                'type' => 'uint256'
                                ]
                ],
                'TokenPermissions' => [
                                [
                                                                'name' => 'token',
                                                                'type' => 'address'
                                ],
                                [
                                                                'name' => 'amount',
                                                                'type' => 'uint256'
                                ]
                ]
        ],
        'primaryType' => 'PermitTransferFrom',
        'message' => [
                'permitted' => [
                                'token' => '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
                                'amount' => '1000000'
                ],
                'spender' => '0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf',
                'nonce' => '123456',
                'deadline' => '1717123200'
        ]
    ],
    'walletSecretId' => 'e051beeb-7163-4527-a5b6-35e301529ff2'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data"

	payload := strings.NewReader("{\n  \"address\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n  \"typedData\": {\n    \"domain\": {\n      \"name\": \"Permit2\",\n      \"chainId\": 1,\n      \"verifyingContract\": \"0x000000000022D473030F116dDEE9F6B43aC78BA3\"\n    },\n    \"types\": {\n      \"EIP712Domain\": [\n        {\n          \"name\": \"name\",\n          \"type\": \"string\"\n        },\n        {\n          \"name\": \"chainId\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"verifyingContract\",\n          \"type\": \"address\"\n        }\n      ],\n      \"PermitTransferFrom\": [\n        {\n          \"name\": \"permitted\",\n          \"type\": \"TokenPermissions\"\n        },\n        {\n          \"name\": \"spender\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"nonce\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"deadline\",\n          \"type\": \"uint256\"\n        }\n      ],\n      \"TokenPermissions\": [\n        {\n          \"name\": \"token\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"amount\",\n          \"type\": \"uint256\"\n        }\n      ]\n    },\n    \"primaryType\": \"PermitTransferFrom\",\n    \"message\": {\n      \"permitted\": {\n        \"token\": \"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48\",\n        \"amount\": \"1000000\"\n      },\n      \"spender\": \"0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf\",\n      \"nonce\": \"123456\",\n      \"deadline\": \"1717123200\"\n    }\n  },\n  \"walletSecretId\": \"e051beeb-7163-4527-a5b6-35e301529ff2\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"address\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n  \"typedData\": {\n    \"domain\": {\n      \"name\": \"Permit2\",\n      \"chainId\": 1,\n      \"verifyingContract\": \"0x000000000022D473030F116dDEE9F6B43aC78BA3\"\n    },\n    \"types\": {\n      \"EIP712Domain\": [\n        {\n          \"name\": \"name\",\n          \"type\": \"string\"\n        },\n        {\n          \"name\": \"chainId\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"verifyingContract\",\n          \"type\": \"address\"\n        }\n      ],\n      \"PermitTransferFrom\": [\n        {\n          \"name\": \"permitted\",\n          \"type\": \"TokenPermissions\"\n        },\n        {\n          \"name\": \"spender\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"nonce\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"deadline\",\n          \"type\": \"uint256\"\n        }\n      ],\n      \"TokenPermissions\": [\n        {\n          \"name\": \"token\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"amount\",\n          \"type\": \"uint256\"\n        }\n      ]\n    },\n    \"primaryType\": \"PermitTransferFrom\",\n    \"message\": {\n      \"permitted\": {\n        \"token\": \"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48\",\n        \"amount\": \"1000000\"\n      },\n      \"spender\": \"0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf\",\n      \"nonce\": \"123456\",\n      \"deadline\": \"1717123200\"\n    }\n  },\n  \"walletSecretId\": \"e051beeb-7163-4527-a5b6-35e301529ff2\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cdp.coinbase.com/platform/v2/embedded-wallet-api/end-users/{userId}/evm/sign/typed-data")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"address\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n  \"typedData\": {\n    \"domain\": {\n      \"name\": \"Permit2\",\n      \"chainId\": 1,\n      \"verifyingContract\": \"0x000000000022D473030F116dDEE9F6B43aC78BA3\"\n    },\n    \"types\": {\n      \"EIP712Domain\": [\n        {\n          \"name\": \"name\",\n          \"type\": \"string\"\n        },\n        {\n          \"name\": \"chainId\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"verifyingContract\",\n          \"type\": \"address\"\n        }\n      ],\n      \"PermitTransferFrom\": [\n        {\n          \"name\": \"permitted\",\n          \"type\": \"TokenPermissions\"\n        },\n        {\n          \"name\": \"spender\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"nonce\",\n          \"type\": \"uint256\"\n        },\n        {\n          \"name\": \"deadline\",\n          \"type\": \"uint256\"\n        }\n      ],\n      \"TokenPermissions\": [\n        {\n          \"name\": \"token\",\n          \"type\": \"address\"\n        },\n        {\n          \"name\": \"amount\",\n          \"type\": \"uint256\"\n        }\n      ]\n    },\n    \"primaryType\": \"PermitTransferFrom\",\n    \"message\": {\n      \"permitted\": {\n        \"token\": \"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48\",\n        \"amount\": \"1000000\"\n      },\n      \"spender\": \"0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf\",\n      \"nonce\": \"123456\",\n      \"deadline\": \"1717123200\"\n    }\n  },\n  \"walletSecretId\": \"e051beeb-7163-4527-a5b6-35e301529ff2\"\n}"

response = http.request(request)
puts response.read_body

200

Example

{
  "signature": "0x1b0c9cf8cd4554c6c6d9e7311e88f1be075d7f25b418a044f4bf2c0a42a93e212ad0a8b54de9e0b5f7e3812de3f2c6cc79aa8c3e1c02e7ad14b4a8f42012c2c01b"
}

Authorizations

endUserAuthapiKeyAuth

Authorization · string · header · required

A JWT signed using the developer's own JWT private key (in the case of JWT authentication), or an end user JWT signed by CDP, encoded in base64. This is used for End User Account APIs.

Headers

X-Wallet-Auth · string

A JWT signed using your Wallet Secret, encoded in base64. Refer to the Generate Wallet Token section of our Authentication docs for more details on how to generate your Wallet Token.

X-Idempotency-Key · string

An optional string request header for making requests safely retryable. When included, duplicate requests with the same key will return identical responses. Refer to our Idempotency docs for more information on using idempotency keys.

Required string length: 1 - 128

X-Developer-Auth · string

A JWT signed using your Wallet Secret, encoded in base64. Refer to the Generate Wallet Token section of our Authentication docs for more details on how to generate your Wallet Token.

Path Parameters

userId · string · required

The ID of the end user.

Pattern: ^[a-zA-Z0-9-]{1,100}$

Example:

"e051beeb-7163-4527-a5b6-35e301529ff2"

Query Parameters

projectID · string

The ID of the CDP Project. Required for end users authenticated using custom auth (i.e. a non-CDP JWT provider).

Pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$

Example:

"8e03978e-40d5-43e8-bc93-6894a57f9324"

Body

application/json

address · string · required

The 0x-prefixed address of the EVM account belonging to the end user.

Pattern: ^0x[0-9a-fA-F]{40}$

Example:

"0x742d35Cc6634C0532925a3b844Bc454e4438f44e"

typedData · object · required

The message to sign using EIP-712.

Show child attributes

Example:

{
  "domain": {
    "name": "Permit2",
    "chainId": 1,
    "verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
  },
  "types": {
    "EIP712Domain": [
      { "name": "name", "type": "string" },
      { "name": "chainId", "type": "uint256" },
      {
        "name": "verifyingContract",
        "type": "address"
      }
    ],
    "PermitTransferFrom": [
      {
        "name": "permitted",
        "type": "TokenPermissions"
      },
      { "name": "spender", "type": "address" },
      { "name": "nonce", "type": "uint256" },
      { "name": "deadline", "type": "uint256" }
    ],
    "TokenPermissions": [
      { "name": "token", "type": "address" },
      { "name": "amount", "type": "uint256" }
    ]
  },
  "primaryType": "PermitTransferFrom",
  "message": {
    "permitted": {
      "token": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "amount": "1000000"
    },
    "spender": "0xFfFfFfFFfFFfFFfFFfFFFFFffFFFffffFfFFFfFf",
    "nonce": "123456",
    "deadline": "1717123200"
  }
}

walletSecretId · string

Required when not using delegated signing. The ID of the Temporary Wallet Secret that was used to sign the X-Wallet-Auth Header.

Pattern: ^[a-zA-Z0-9-]{1,100}$

Example:

"e051beeb-7163-4527-a5b6-35e301529ff2"

Response

200

application/json

Successfully signed typed data.

signature · string · required

The signature of the typed data, as a 0x-prefixed hex string.

Example:

"0x1b0c9cf8cd4554c6c6d9e7311e88f1be075d7f25b418a044f4bf2c0a42a93e212ad0a8b54de9e0b5f7e3812de3f2c6cc79aa8c3e1c02e7ad14b4a8f42012c2c01b"