External Accounts API

nexmo · Company

Company No Auth Free & Open API

The External Accounts API is used to manage accounts for Viber Business Messages, Facebook Messenger and Whatsapp for use in the [Messages](https://developer.nexmo.com/messages/overview) and [Dispatch](https://developer.nexmo.com/dispatch/overview) APIs.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Retrieve all accounts you own

Retrieve all accounts you own

https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5?provider=messenger&page_size=1&page_number=1

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/?provider=messenger&page_size=1&page_number=1"

import requests
params = {
    "provider": "messenger",
    "page_size": "1",
    "page_number": "1"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/');
url.searchParams.set('provider', 'messenger');
url.searchParams.set('page_size', '1');
url.searchParams.set('page_number', '1');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/")
	q := baseURL.Query()
	q.Set("provider", "messenger")
	q.Set("page_size", "1")
	q.Set("page_number", "1")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/")
uri.query = URI.encode_www_form({
  "provider" => "messenger",
  "page_size" => "1",
  "page_number" => "1"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/?" . http_build_query([
    "provider" => "messenger",
    "page_size" => "1",
    "page_number" => "1"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Retrieve a Messenger account

Retrieve a Messenger account

https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/messenger/{external_id}";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Retrieve a Viber Service Message account

Retrieve a Viber Service Message account

https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/nexmo.com/external-accounts/0.1.5/viber_service_msg/{external_id}";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with External Accounts API?

External Accounts API is a Company API. Developers commonly use company APIs for:

enriching CRM records with company firmographics
building lead-generation and prospecting tools
verifying business identity and registration details
monitoring competitors and market intelligence
powering B2B data enrichment pipelines

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. External Accounts API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide · Learn about API keys · What is REST?

Open documentation ↗