Update customer
curl --request PATCH \
--url https://api.example.com/api/v1/developer/customers/{customer_id}import requests
url = "https://api.example.com/api/v1/developer/customers/{customer_id}"
response = requests.patch(url)
print(response.text)const options = {method: 'PATCH'};
fetch('https://api.example.com/api/v1/developer/customers/{customer_id}', 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.example.com/api/v1/developer/customers/{customer_id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "PATCH",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/api/v1/developer/customers/{customer_id}"
req, _ := http.NewRequest("PATCH", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.patch("https://api.example.com/api/v1/developer/customers/{customer_id}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/api/v1/developer/customers/{customer_id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Patch.new(url)
response = http.request(request)
puts response.read_bodyCustomers
Update customer
Update a customer’s name fields.
PATCH
/
api
/
v1
/
developer
/
customers
/
{customer_id}
Update customer
curl --request PATCH \
--url https://api.example.com/api/v1/developer/customers/{customer_id}import requests
url = "https://api.example.com/api/v1/developer/customers/{customer_id}"
response = requests.patch(url)
print(response.text)const options = {method: 'PATCH'};
fetch('https://api.example.com/api/v1/developer/customers/{customer_id}', 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.example.com/api/v1/developer/customers/{customer_id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "PATCH",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/api/v1/developer/customers/{customer_id}"
req, _ := http.NewRequest("PATCH", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.patch("https://api.example.com/api/v1/developer/customers/{customer_id}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/api/v1/developer/customers/{customer_id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Patch.new(url)
response = http.request(request)
puts response.read_bodyRequired scope:
A field set to
customers:write
Rate limit: 60 requests/minute
Idempotency: supported – pass Idempotency-Key to safely retry. See Idempotency.
Only first_name and last_name are updatable through this endpoint. Email
changes are not currently supported via the Developer API – change them
through the in-app dashboard, which handles the de-duplication and audit
flow.
Path parameters
| Parameter | Type | Notes |
|---|---|---|
customer_id | UUID | Customer identifier |
Request body
| Field | Type | Required | Notes |
|---|---|---|---|
first_name | string | no | Up to 255 characters; omit to leave unchanged |
last_name | string | no | Up to 255 characters; omit to leave unchanged |
null is treated the same as omitting it – fields are only
written when explicitly provided with a non-null value. A PATCH with an
empty body ({}) or with both fields omitted is a no-op and still returns
200 with the unchanged customer.
Response
{
"id": "c0ffee00-0000-4000-8000-000000000001",
"email": "buyer@example.com",
"first_name": "Alexandra",
"last_name": "Buyer",
"total_ltv": "175.00",
"created_at": "2026-04-26T01:23:45Z",
"location_id": null
}
Errors
404– Customer not found in your tenant.409–Idempotency-Keyreused with a different request body within the 24h replay window (see Idempotency).422– Validation error (e.g. name longer than 255 characters).
Examples
curl -X PATCH \
-H "X-API-Key: vg_live_EXAMPLEdoNotUseThis123456" \
-H "Content-Type: application/json" \
-d '{"first_name": "Alexandra"}' \
https://api.vouchergrid.com/api/v1/developer/customers/c0ffee00-0000-4000-8000-000000000001
const res = await fetch(
"https://api.vouchergrid.com/api/v1/developer/customers/c0ffee00-0000-4000-8000-000000000001",
{
method: "PATCH",
headers: {
"X-API-Key": process.env.VOUCHERGRID_API_KEY!,
"Content-Type": "application/json",
},
body: JSON.stringify({ first_name: "Alexandra" }),
},
);
const customer = await res.json();