Application API

nexmo · Company

Company No Auth Free & Open API

Vonage provides an Application API to allow management of your Vonage Applications. This API is backwards compatible with version 1. Applications created using version 1 of the API can also be managed using version 2 (this version) of the API.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET List available applications

List available applications

https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4?page=1&page_size=10

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/?page=1&page_size=10"

import requests
params = {
    "page": "1",
    "page_size": "10"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/');
url.searchParams.set('page', '1');
url.searchParams.set('page_size', '10');

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.v2/2.1.4/")
	q := baseURL.Query()
	q.Set("page", "1")
	q.Set("page_size", "10")
	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.v2/2.1.4/")
uri.query = URI.encode_www_form({
  "page" => "1",
  "page_size" => "10"
})

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.v2/2.1.4/?" . http_build_query([
    "page" => "1",
    "page_size" => "10"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get an application

Get an application

https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/{id}

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/{id}"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/{id}",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/{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/application.v2/2.1.4/{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/application.v2/2.1.4/{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/application.v2/2.1.4/{id}";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST Create an application

Create an application

https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/"

import requests
response = requests.post(
    "https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/nexmo.com/application.v2/2.1.4/';

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.v2/2.1.4/"
	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.v2/2.1.4/")

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.v2/2.1.4/";
$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 Application API?

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. 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 ↗