Nexmo Application API

nexmo · Company

Company No Auth Free & Open API

Applications V1 is deprecated This version of the API has been deprecated. Please use version 2 going forwards A Nexmo application contains the security and configuration information you need to connect to Nexmo endpoints and easily use our products.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Retrieve all Applications

You use a `GET` request to retrieve details of all applications associated with your account.

https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2?api_key=YOUR_API_KEY&page_size=10&api_secret=example&page_index=0

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/?api_key=YOUR_API_KEY&page_size=10&api_secret=example&page_index=0"

import requests
params = {
    "api_key": "YOUR_API_KEY",
    "page_size": "10",
    "api_secret": "example",
    "page_index": "0"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/');
url.searchParams.set('api_key', 'YOUR_API_KEY');
url.searchParams.set('page_size', '10');
url.searchParams.set('api_secret', 'example');
url.searchParams.set('page_index', '0');

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/application/1.0.2/")
	q := baseURL.Query()
	q.Set("api_key", "YOUR_API_KEY")
	q.Set("page_size", "10")
	q.Set("api_secret", "example")
	q.Set("page_index", "0")
	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/application/1.0.2/")
uri.query = URI.encode_www_form({
  "api_key" => "YOUR_API_KEY",
  "page_size" => "10",
  "api_secret" => "example",
  "page_index" => "0"
})

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/application/1.0.2/?" . http_build_query([
    "api_key" => "YOUR_API_KEY",
    "page_size" => "10",
    "api_secret" => "example",
    "page_index" => "0"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Retrieve Application

You use a `GET` request to retrieve details about a single application.

https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/{app_id}?api_key=YOUR_API_KEY&api_secret=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/{app_id}?api_key=YOUR_API_KEY&api_secret=example"

import requests
params = {
    "api_key": "YOUR_API_KEY",
    "api_secret": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/{app_id}",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/{app_id}');
url.searchParams.set('api_key', 'YOUR_API_KEY');
url.searchParams.set('api_secret', 'example');

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/application/1.0.2/{app_id}")
	q := baseURL.Query()
	q.Set("api_key", "YOUR_API_KEY")
	q.Set("api_secret", "example")
	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/application/1.0.2/{app_id}")
uri.query = URI.encode_www_form({
  "api_key" => "YOUR_API_KEY",
  "api_secret" => "example"
})

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/application/1.0.2/{app_id}?" . http_build_query([
    "api_key" => "YOUR_API_KEY",
    "api_secret" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST Create Application

You use a `POST` request to create a new application.

https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/"

import requests
response = requests.post(
    "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/';

const response = await fetch(url, {
  method: 'POST',
}); 
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/application/1.0.2/"
	req, _ := http.NewRequest("POST", 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/application/1.0.2/")

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

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

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

<?php
$url = "https://api.apis.guru/v2/specs/nexmo.com/application/1.0.2/";
$opts = ["http" => [
    "method" => "POST",
]];
$ctx = stream_context_create($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 Nexmo Application API?

Nexmo Application 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. Nexmo Application 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 ↗