Verify an x402 payment
curl --request POST \
--url https://api.circle.com/v1/facilitator/x402/verify \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"x402Version": 2,
"paymentPayload": {
"x402Version": 2,
"accepted": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
},
"payload": {
"signature": "0x...",
"authorization": {
"from": "0x9aE2...",
"to": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"value": "1000000",
"validAfter": "0",
"validBefore": "1781308800",
"nonce": "0x4d3f..."
}
},
"resource": {
"url": "https://api.example.com/premium",
"description": "Premium report",
"mimeType": "application/json"
},
"extensions": {
"payment-identifier": {
"info": {
"required": true,
"id": "pay_5f0d3c1a9b7e4d2c"
}
}
}
},
"paymentRequirements": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
}
}
'import requests
url = "https://api.circle.com/v1/facilitator/x402/verify"
payload = {
"x402Version": 2,
"paymentPayload": {
"x402Version": 2,
"accepted": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
},
"payload": {
"signature": "0x...",
"authorization": {
"from": "0x9aE2...",
"to": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"value": "1000000",
"validAfter": "0",
"validBefore": "1781308800",
"nonce": "0x4d3f..."
}
},
"resource": {
"url": "https://api.example.com/premium",
"description": "Premium report",
"mimeType": "application/json"
},
"extensions": { "payment-identifier": { "info": {
"required": True,
"id": "pay_5f0d3c1a9b7e4d2c"
} } }
},
"paymentRequirements": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
}
}
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({
x402Version: 2,
paymentPayload: {
x402Version: 2,
accepted: {
scheme: 'exact',
network: 'eip155:5042002',
amount: '1000000',
asset: '0x3600000000000000000000000000000000000000',
payTo: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
maxTimeoutSeconds: 12,
extra: {name: 'USDC', version: '2', assetTransferMethod: 'eip3009'}
},
payload: {
signature: '0x...',
authorization: {
from: '0x9aE2...',
to: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
value: '1000000',
validAfter: '0',
validBefore: '1781308800',
nonce: '0x4d3f...'
}
},
resource: {
url: 'https://api.example.com/premium',
description: 'Premium report',
mimeType: 'application/json'
},
extensions: {'payment-identifier': {info: {required: true, id: 'pay_5f0d3c1a9b7e4d2c'}}}
},
paymentRequirements: {
scheme: 'exact',
network: 'eip155:5042002',
amount: '1000000',
asset: '0x3600000000000000000000000000000000000000',
payTo: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
maxTimeoutSeconds: 12,
extra: {name: 'USDC', version: '2', assetTransferMethod: 'eip3009'}
}
})
};
fetch('https://api.circle.com/v1/facilitator/x402/verify', 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.circle.com/v1/facilitator/x402/verify",
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([
'x402Version' => 2,
'paymentPayload' => [
'x402Version' => 2,
'accepted' => [
'scheme' => 'exact',
'network' => 'eip155:5042002',
'amount' => '1000000',
'asset' => '0x3600000000000000000000000000000000000000',
'payTo' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'maxTimeoutSeconds' => 12,
'extra' => [
'name' => 'USDC',
'version' => '2',
'assetTransferMethod' => 'eip3009'
]
],
'payload' => [
'signature' => '0x...',
'authorization' => [
'from' => '0x9aE2...',
'to' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'value' => '1000000',
'validAfter' => '0',
'validBefore' => '1781308800',
'nonce' => '0x4d3f...'
]
],
'resource' => [
'url' => 'https://api.example.com/premium',
'description' => 'Premium report',
'mimeType' => 'application/json'
],
'extensions' => [
'payment-identifier' => [
'info' => [
'required' => true,
'id' => 'pay_5f0d3c1a9b7e4d2c'
]
]
]
],
'paymentRequirements' => [
'scheme' => 'exact',
'network' => 'eip155:5042002',
'amount' => '1000000',
'asset' => '0x3600000000000000000000000000000000000000',
'payTo' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'maxTimeoutSeconds' => 12,
'extra' => [
'name' => 'USDC',
'version' => '2',
'assetTransferMethod' => 'eip3009'
]
]
]),
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.circle.com/v1/facilitator/x402/verify"
payload := strings.NewReader("{\n \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\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.circle.com/v1/facilitator/x402/verify")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.circle.com/v1/facilitator/x402/verify")
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 \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\n}"
response = http.request(request)
puts response.read_body{
"isValid": true,
"payer": "0x9aE2...",
"invalidReason": "invalid_exact_evm_payload_signature"
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}Verify an x402 payment
Validates an x402 payment payload without creating a payment, consuming keyless trial usage, or submitting anything onchain. Use this endpoint for verification purposes. To settle a payment, see Settle an x402 payment.
POST
/
v1
/
facilitator
/
x402
/
verify
Verify an x402 payment
curl --request POST \
--url https://api.circle.com/v1/facilitator/x402/verify \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"x402Version": 2,
"paymentPayload": {
"x402Version": 2,
"accepted": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
},
"payload": {
"signature": "0x...",
"authorization": {
"from": "0x9aE2...",
"to": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"value": "1000000",
"validAfter": "0",
"validBefore": "1781308800",
"nonce": "0x4d3f..."
}
},
"resource": {
"url": "https://api.example.com/premium",
"description": "Premium report",
"mimeType": "application/json"
},
"extensions": {
"payment-identifier": {
"info": {
"required": true,
"id": "pay_5f0d3c1a9b7e4d2c"
}
}
}
},
"paymentRequirements": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
}
}
'import requests
url = "https://api.circle.com/v1/facilitator/x402/verify"
payload = {
"x402Version": 2,
"paymentPayload": {
"x402Version": 2,
"accepted": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
},
"payload": {
"signature": "0x...",
"authorization": {
"from": "0x9aE2...",
"to": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"value": "1000000",
"validAfter": "0",
"validBefore": "1781308800",
"nonce": "0x4d3f..."
}
},
"resource": {
"url": "https://api.example.com/premium",
"description": "Premium report",
"mimeType": "application/json"
},
"extensions": { "payment-identifier": { "info": {
"required": True,
"id": "pay_5f0d3c1a9b7e4d2c"
} } }
},
"paymentRequirements": {
"scheme": "exact",
"network": "eip155:5042002",
"amount": "1000000",
"asset": "0x3600000000000000000000000000000000000000",
"payTo": "0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a",
"maxTimeoutSeconds": 12,
"extra": {
"name": "USDC",
"version": "2",
"assetTransferMethod": "eip3009"
}
}
}
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({
x402Version: 2,
paymentPayload: {
x402Version: 2,
accepted: {
scheme: 'exact',
network: 'eip155:5042002',
amount: '1000000',
asset: '0x3600000000000000000000000000000000000000',
payTo: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
maxTimeoutSeconds: 12,
extra: {name: 'USDC', version: '2', assetTransferMethod: 'eip3009'}
},
payload: {
signature: '0x...',
authorization: {
from: '0x9aE2...',
to: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
value: '1000000',
validAfter: '0',
validBefore: '1781308800',
nonce: '0x4d3f...'
}
},
resource: {
url: 'https://api.example.com/premium',
description: 'Premium report',
mimeType: 'application/json'
},
extensions: {'payment-identifier': {info: {required: true, id: 'pay_5f0d3c1a9b7e4d2c'}}}
},
paymentRequirements: {
scheme: 'exact',
network: 'eip155:5042002',
amount: '1000000',
asset: '0x3600000000000000000000000000000000000000',
payTo: '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
maxTimeoutSeconds: 12,
extra: {name: 'USDC', version: '2', assetTransferMethod: 'eip3009'}
}
})
};
fetch('https://api.circle.com/v1/facilitator/x402/verify', 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.circle.com/v1/facilitator/x402/verify",
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([
'x402Version' => 2,
'paymentPayload' => [
'x402Version' => 2,
'accepted' => [
'scheme' => 'exact',
'network' => 'eip155:5042002',
'amount' => '1000000',
'asset' => '0x3600000000000000000000000000000000000000',
'payTo' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'maxTimeoutSeconds' => 12,
'extra' => [
'name' => 'USDC',
'version' => '2',
'assetTransferMethod' => 'eip3009'
]
],
'payload' => [
'signature' => '0x...',
'authorization' => [
'from' => '0x9aE2...',
'to' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'value' => '1000000',
'validAfter' => '0',
'validBefore' => '1781308800',
'nonce' => '0x4d3f...'
]
],
'resource' => [
'url' => 'https://api.example.com/premium',
'description' => 'Premium report',
'mimeType' => 'application/json'
],
'extensions' => [
'payment-identifier' => [
'info' => [
'required' => true,
'id' => 'pay_5f0d3c1a9b7e4d2c'
]
]
]
],
'paymentRequirements' => [
'scheme' => 'exact',
'network' => 'eip155:5042002',
'amount' => '1000000',
'asset' => '0x3600000000000000000000000000000000000000',
'payTo' => '0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a',
'maxTimeoutSeconds' => 12,
'extra' => [
'name' => 'USDC',
'version' => '2',
'assetTransferMethod' => 'eip3009'
]
]
]),
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.circle.com/v1/facilitator/x402/verify"
payload := strings.NewReader("{\n \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\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.circle.com/v1/facilitator/x402/verify")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.circle.com/v1/facilitator/x402/verify")
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 \"x402Version\": 2,\n \"paymentPayload\": {\n \"x402Version\": 2,\n \"accepted\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n },\n \"payload\": {\n \"signature\": \"0x...\",\n \"authorization\": {\n \"from\": \"0x9aE2...\",\n \"to\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"value\": \"1000000\",\n \"validAfter\": \"0\",\n \"validBefore\": \"1781308800\",\n \"nonce\": \"0x4d3f...\"\n }\n },\n \"resource\": {\n \"url\": \"https://api.example.com/premium\",\n \"description\": \"Premium report\",\n \"mimeType\": \"application/json\"\n },\n \"extensions\": {\n \"payment-identifier\": {\n \"info\": {\n \"required\": true,\n \"id\": \"pay_5f0d3c1a9b7e4d2c\"\n }\n }\n }\n },\n \"paymentRequirements\": {\n \"scheme\": \"exact\",\n \"network\": \"eip155:5042002\",\n \"amount\": \"1000000\",\n \"asset\": \"0x3600000000000000000000000000000000000000\",\n \"payTo\": \"0x7c3eA945Fc4253255D8260fC18C2deE3D8c5DD3a\",\n \"maxTimeoutSeconds\": 12,\n \"extra\": {\n \"name\": \"USDC\",\n \"version\": \"2\",\n \"assetTransferMethod\": \"eip3009\"\n }\n }\n}"
response = http.request(request)
puts response.read_body{
"isValid": true,
"payer": "0x9aE2...",
"invalidReason": "invalid_exact_evm_payload_signature"
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}{
"code": 403,
"message": "Registration required to continue settling on this address",
"errors": [
{
"reason": "registration_required"
}
]
}Authorizations
CircleApiKeyFacilitatorSellerProof
Bearer token authentication with a Circle API key. Use this for production settlement after claiming your Facilitator Service seller account.
Body
application/json
x402 protocol version. Facilitator Service supports version 2.
Available options:
2 x402 v2 payment payload. Includes the payment terms the buyer accepted and the signed EIP-3009 authorization that authorizes the USDC transfer.
Show child attributes
Show child attributes
Payment terms the seller advertises for an x402 resource. Facilitator Service validates that the buyer's authorization matches these requirements.
Show child attributes
Show child attributes
Response
Verification result
Whether the payload passed every check Facilitator Service runs before submission.
Example:
true
Buyer address recovered from the signed authorization. Always rendered, including on invalid results, so callers can correlate.
Example:
"0x9aE2..."
Reason code. Present when isValid is false.
Available options:
invalid_x402_version, unsupported_scheme, invalid_network, invalid_payment_requirements, invalid_payload, invalid_exact_evm_payload_recipient_mismatch, invalid_exact_evm_payload_authorization_value_mismatch, invalid_exact_evm_payload_authorization_valid_after, invalid_exact_evm_payload_authorization_valid_before, invalid_exact_evm_payload_signature, invalid_transaction_state, insufficient_funds Example:
"invalid_exact_evm_payload_signature"
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