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GET
/
v1
/
suppliers
List suppliers
curl --request GET \
  --url https://register.tariff.interop/v1/suppliers
import requests

url = "https://register.tariff.interop/v1/suppliers"

response = requests.get(url)

print(response.text)
const options = {method: 'GET'};

fetch('https://register.tariff.interop/v1/suppliers', 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://register.tariff.interop/v1/suppliers",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($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://register.tariff.interop/v1/suppliers"

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

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

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

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.get("https://register.tariff.interop/v1/suppliers")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://register.tariff.interop/v1/suppliers")

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

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body
{
  "data": [
    {
      "supplier_mpid": "SEBD",
      "url": "https://tariff-api.example-supplier.co.uk/SEBD",
      "display_name": "Cucumber Energy",
      "status": "active",
      "last_modified": "2026-11-01T10:00:00.000Z",
      "support": "tariff-support@example-supplier.co.uk"
    }
  ],
  "meta": {
    "total": 47,
    "limit": 20,
    "offset": 0,
    "next_offset": 20
  }
}
{
  "code": "tariff_not_found",
  "message": "No tariff found for the given tariff_id and supplier MPID.",
  "details": "tariff_id a1b2c3d4-e5f6-7890-abcd-ef1234567890 does not exist for supplier SEBD."
}

Query Parameters

​
limit
integer
default:20

Maximum number of records to return. Defaults to 20, maximum 100.

Required range: 1 <= x <= 100
Example:

20

​
offset
integer
default:0

Number of records to skip for pagination. Defaults to 0.

Required range: x >= 0
Example:

0

​
active
boolean

When true, returns only currently active suppliers.

Example:

true

Response

A list of supplier register entries.

​
data
object[]
required
​
meta
object
required

Pagination metadata included in list responses.

Last modified on March 28, 2026