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GET
/
v1
/
customers
/
{id}
Retrieve a customer
curl --request GET \
  --url https://api.withflex.com/v1/customers/{id} \
  --header 'Authorization: Bearer <token>'
import requests

url = "https://api.withflex.com/v1/customers/{id}"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.withflex.com/v1/customers/{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.withflex.com/v1/customers/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);

$response = curl_exec($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.withflex.com/v1/customers/{id}"

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("Authorization", "Bearer <token>")

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

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

fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.get("https://api.withflex.com/v1/customers/{id}")
.header("Authorization", "Bearer <token>")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.withflex.com/v1/customers/{id}")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
{
  "customer": {
    "customer_id": "fcus_01HACM7FZ1084XB1GB6053VM0D",
    "owner_partner_id": "obj_01J9XR8M3K7VZ8N2YB4WJ6T0RA",
    "first_name": "John",
    "last_name": "Doe",
    "email": "joh.doe@example.com",
    "phone": "+15555555555",
    "employer": "Flex",
    "shipping": {},
    "metadata": {
      "order_id": "8842",
      "channel": "shopify"
    },
    "created_at": "2026-06-15T14:30:00Z",
    "test_mode": false
  }
}
{
"code": "string",
"detail": "string"
}
{
"code": "string",
"detail": "string"
}
{
"code": "string",
"detail": "string"
}
{
"code": "string",
"detail": "string"
}
{
"detail": [
{
"loc": [
"string"
],
"msg": "string",
"type": "string"
}
]
}
{
"code": "string",
"detail": "string"
}

Authorizations

Authorization
string
header
required

Use a Bearer token to access this API.

Path Parameters

id
string
required
Example:

"fcus_01J9XR8M3K7VZ8N2YB4WJ6T0RA"

Query Parameters

include_org
boolean | null

Resolve a customer owned by a sibling partner in the same organization (PII opt-in). Defaults to false; a customer owned by another partner returns 404 unless this is true and the caller shares an organization with the owner. The owner is named on the response's owner_partner_id, and a sibling-owned customer's metadata is returned as null.

Response

Success

An envelope wrapping a single customer object.

customer
object
required

The customer.

Example:
{
"customer_id": "fcus_01HACM7FZ1084XB1GB6053VM0D",
"owner_partner_id": "obj_01J9XR8M3K7VZ8N2YB4WJ6T0RA",
"first_name": "John",
"last_name": "Doe",
"email": "joh.doe@example.com",
"phone": "+15555555555",
"employer": "Flex",
"shipping": {
"shipping_address_id": "fsh_01J9XR8M3K7VZ8N2YB4WJ6T0RA",
"line1": "123 Main St",
"line2": "Suite 100",
"city": "San Francisco",
"state": "CA",
"postal_code": "94107",
"country": "US"
},
"metadata": { "order_id": "8842", "channel": "shopify" },
"created_at": "2026-06-15T14:30:00Z",
"test_mode": false
}