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PATCH
/
customers
/
{customerId}
Update a customer
curl --request PATCH \
  --url https://sandbox-api.polygon.technology/v0.10/customers/{customerId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "firstName": "<string>",
  "middleName": "<string>",
  "lastName": "<string>",
  "email": "<string>",
  "phone": "<string>",
  "birthDate": "<string>",
  "nationality": "<string>",
  "ipAddress": "<string>",
  "externalId": "<string>",
  "signedAgreement": true,
  "residentialAddress": {
    "line1": "123 Main St",
    "line2": "<string>",
    "city": "New York",
    "state": "NY",
    "country": "US",
    "zipCode": "10001"
  },
  "identifyingInformation": [
    {
      "type": "ssn",
      "issuingCountry": "US",
      "number": "123456789"
    }
  ],
  "endorsements": [],
  "metadata": {}
}
'
import requests

url = "https://sandbox-api.polygon.technology/v0.10/customers/{customerId}"

payload = {
    "firstName": "<string>",
    "middleName": "<string>",
    "lastName": "<string>",
    "email": "<string>",
    "phone": "<string>",
    "birthDate": "<string>",
    "nationality": "<string>",
    "ipAddress": "<string>",
    "externalId": "<string>",
    "signedAgreement": True,
    "residentialAddress": {
        "line1": "123 Main St",
        "line2": "<string>",
        "city": "New York",
        "state": "NY",
        "country": "US",
        "zipCode": "10001"
    },
    "identifyingInformation": [
        {
            "type": "ssn",
            "issuingCountry": "US",
            "number": "123456789"
        }
    ],
    "endorsements": [],
    "metadata": {}
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)
const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    firstName: '<string>',
    middleName: '<string>',
    lastName: '<string>',
    email: '<string>',
    phone: '<string>',
    birthDate: '<string>',
    nationality: '<string>',
    ipAddress: '<string>',
    externalId: '<string>',
    signedAgreement: true,
    residentialAddress: {
      line1: '123 Main St',
      line2: '<string>',
      city: 'New York',
      state: 'NY',
      country: 'US',
      zipCode: '10001'
    },
    identifyingInformation: [{type: 'ssn', issuingCountry: 'US', number: '123456789'}],
    endorsements: [],
    metadata: {}
  })
};

fetch('https://sandbox-api.polygon.technology/v0.10/customers/{customerId}', 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://sandbox-api.polygon.technology/v0.10/customers/{customerId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'firstName' => '<string>',
    'middleName' => '<string>',
    'lastName' => '<string>',
    'email' => '<string>',
    'phone' => '<string>',
    'birthDate' => '<string>',
    'nationality' => '<string>',
    'ipAddress' => '<string>',
    'externalId' => '<string>',
    'signedAgreement' => true,
    'residentialAddress' => [
        'line1' => '123 Main St',
        'line2' => '<string>',
        'city' => 'New York',
        'state' => 'NY',
        'country' => 'US',
        'zipCode' => '10001'
    ],
    'identifyingInformation' => [
        [
                'type' => 'ssn',
                'issuingCountry' => 'US',
                'number' => '123456789'
        ]
    ],
    'endorsements' => [
        
    ],
    'metadata' => [
        
    ]
  ]),
  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://sandbox-api.polygon.technology/v0.10/customers/{customerId}"

	payload := strings.NewReader("{\n  \"firstName\": \"<string>\",\n  \"middleName\": \"<string>\",\n  \"lastName\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"birthDate\": \"<string>\",\n  \"nationality\": \"<string>\",\n  \"ipAddress\": \"<string>\",\n  \"externalId\": \"<string>\",\n  \"signedAgreement\": true,\n  \"residentialAddress\": {\n    \"line1\": \"123 Main St\",\n    \"line2\": \"<string>\",\n    \"city\": \"New York\",\n    \"state\": \"NY\",\n    \"country\": \"US\",\n    \"zipCode\": \"10001\"\n  },\n  \"identifyingInformation\": [\n    {\n      \"type\": \"ssn\",\n      \"issuingCountry\": \"US\",\n      \"number\": \"123456789\"\n    }\n  ],\n  \"endorsements\": [],\n  \"metadata\": {}\n}")

	req, _ := http.NewRequest("PATCH", 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.patch("https://sandbox-api.polygon.technology/v0.10/customers/{customerId}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"firstName\": \"<string>\",\n  \"middleName\": \"<string>\",\n  \"lastName\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"birthDate\": \"<string>\",\n  \"nationality\": \"<string>\",\n  \"ipAddress\": \"<string>\",\n  \"externalId\": \"<string>\",\n  \"signedAgreement\": true,\n  \"residentialAddress\": {\n    \"line1\": \"123 Main St\",\n    \"line2\": \"<string>\",\n    \"city\": \"New York\",\n    \"state\": \"NY\",\n    \"country\": \"US\",\n    \"zipCode\": \"10001\"\n  },\n  \"identifyingInformation\": [\n    {\n      \"type\": \"ssn\",\n      \"issuingCountry\": \"US\",\n      \"number\": \"123456789\"\n    }\n  ],\n  \"endorsements\": [],\n  \"metadata\": {}\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://sandbox-api.polygon.technology/v0.10/customers/{customerId}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"firstName\": \"<string>\",\n  \"middleName\": \"<string>\",\n  \"lastName\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"birthDate\": \"<string>\",\n  \"nationality\": \"<string>\",\n  \"ipAddress\": \"<string>\",\n  \"externalId\": \"<string>\",\n  \"signedAgreement\": true,\n  \"residentialAddress\": {\n    \"line1\": \"123 Main St\",\n    \"line2\": \"<string>\",\n    \"city\": \"New York\",\n    \"state\": \"NY\",\n    \"country\": \"US\",\n    \"zipCode\": \"10001\"\n  },\n  \"identifyingInformation\": [\n    {\n      \"type\": \"ssn\",\n      \"issuingCountry\": \"US\",\n      \"number\": \"123456789\"\n    }\n  ],\n  \"endorsements\": [],\n  \"metadata\": {}\n}"

response = http.request(request)
puts response.read_body
{
  "id": "cst_01H9Xa8F5dN6mP3q",
  "object": "customer",
  "type": "individual",
  "firstName": "Jane",
  "middleName": null,
  "lastName": "Smith",
  "email": "jane@example.com",
  "phone": "+12125551234",
  "nationality": "US",
  "externalId": "usr_12345",
  "status": "active",
  "signedAgreement": true,
  "signedAgreementAt": "2026-03-20T14:15:22Z",
  "wallets": [
    {
      "id": "wlt_01H9Xb3K7nM2pQ4r",
      "type": "custodial",
      "address": "0x7B3a9F2c4D1eA8bF6390cE5d2B7fA104C8e3D9b1",
      "network": "polygon",
      "asset": "usdc",
      "balance": "1234.56",
      "estimatedValueUsd": "1234.56",
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ],
  "endorsements": [
    {
      "rejectionReasons": [
        {
          "developerReason": "<string>",
          "reason": "<string>"
        }
      ],
      "requirements": {
        "complete": [
          "<string>"
        ],
        "pending": [
          "<string>"
        ],
        "missing": [
          "<string>"
        ],
        "issues": [
          "<string>"
        ]
      }
    }
  ],
  "metadata": {},
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z"
}
{
  "error": "Unauthorized",
  "code": 1000,
  "msg": "unauthorized access",
  "status": 401,
  "cause": "signature"
}
{
  "error": "Unauthorized",
  "code": 1000,
  "msg": "unauthorized access",
  "status": 401,
  "cause": "signature"
}

Authorizations

​
Authorization
string
header
required

Token from POST /auth/token

Path Parameters

​
customerId
string
required

Body

application/json

Partial update: only send the fields you want to change. All optional fields from CustomerRequest can be updated (including ipAddress). PII fields are write-only.

​
firstName
string
​
middleName
string
​
lastName
string
​
email
string
​
phone
string
​
birthDate
string
write-only
​
nationality
string
​
ipAddress
string
write-only
​
externalId
string
​
signedAgreement
boolean

One-way operation. Cannot be set back to false.

​
residentialAddress
object

Customer's residential address.

​
identifyingInformation
object[]
write-only

Appends to existing array. To replace an entry, submit the same type with updated fields.

​
endorsements
enum<string>[]

Request additional endorsements. New endorsements are added; existing ones are not removed. Including endorsement names triggers re-evaluation.

Available options:
basic,
cryptoCustody,
usd
​
metadata
object

Response

Customer updated

Customer response object. PII fields (birthDate, residentialAddress, ipAddress, identifyingInformation) are write-only: accepted in POST/PATCH but never returned in responses.

​
id
string
Example:

"cst_01H9Xa8F5dN6mP3q"

​
object
string
Example:

"customer"

​
type
enum<string>

Customer type. Only individual is supported for MVP.

Available options:
individual
Example:

"individual"

​
firstName
string | null
Example:

"Jane"

​
middleName
string | null
Example:

null

​
lastName
string | null
Example:

"Smith"

​
email
string | null
Example:

"jane@example.com"

​
phone
string | null

Primary phone in E.164 format.

Example:

"+12125551234"

​
nationality
string | null

ISO 3166-1 alpha-2 country code.

Example:

"US"

​
externalId
string | null

Developer's own user ID for cross-referencing.

Example:

"usr_12345"

​
status
enum<string>

active or inactive. Inactive customers cannot create new transactions. No intermediate states: all granularity lives in endorsement statuses.

Available options:
active,
inactive
Example:

"active"

​
signedAgreement
boolean

Whether the customer has accepted OMS terms of service.

Example:

true

​
signedAgreementAt
string<date-time> | null

Timestamp when signedAgreement was set to true. Null if not yet signed.

Example:

"2026-03-20T14:15:22Z"

​
wallets
object[]

Simplified flat view: one entry per wallet-asset combination. Use GET /wallets/{id} for the full representation.

​
endorsements
object[]

Endorsements track KYC/compliance status. Types: basic, cryptoCustody, usd. Statuses use SCREAMING_CASE: INACTIVE, PENDING, ISSUES, ACTIVE, REJECTED, REVOKED_ISSUES, OFFBOARDED.

​
metadata
object | null
​
createdAt
string<date-time>
​
updatedAt
string<date-time>