ID4i API

id4i · Company

Company No Auth Free & Open enterprise

ID4i HTTP API

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Find API key by organization

Finding all API key assigned to the specified organization in a paginated manner.

https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/apikeys?limit=10&offset=0&organizationId=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/apikeys?limit=10&offset=0&organizationId=example"

import requests
params = {
    "limit": "10",
    "offset": "0",
    "organizationId": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/apikeys",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/apikeys');
url.searchParams.set('limit', '10');
url.searchParams.set('offset', '0');
url.searchParams.set('organizationId', '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/id4i.de/1.0.2/api/v1/apikeys")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("offset", "0")
	q.Set("organizationId", "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/id4i.de/1.0.2/api/v1/apikeys")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "offset" => "0",
  "organizationId" => "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/id4i.de/1.0.2/api/v1/apikeys?" . http_build_query([
    "limit" => "10",
    "offset" => "0",
    "organizationId" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List countries

List countries

https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/countries?limit=10&offset=0

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/countries?limit=10&offset=0"

import requests
params = {
    "limit": "10",
    "offset": "0"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/countries",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/countries');
url.searchParams.set('limit', '10');
url.searchParams.set('offset', '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/id4i.de/1.0.2/api/v1/countries")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("offset", "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/id4i.de/1.0.2/api/v1/countries")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "offset" => "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/id4i.de/1.0.2/api/v1/countries?" . http_build_query([
    "limit" => "10",
    "offset" => "0"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List roles

Listing of roles.

https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/roles?limit=10&offset=0&privilege=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/roles?limit=10&offset=0&privilege=example"

import requests
params = {
    "limit": "10",
    "offset": "0",
    "privilege": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/roles",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/id4i.de/1.0.2/api/v1/roles');
url.searchParams.set('limit', '10');
url.searchParams.set('offset', '0');
url.searchParams.set('privilege', '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/id4i.de/1.0.2/api/v1/roles")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("offset", "0")
	q.Set("privilege", "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/id4i.de/1.0.2/api/v1/roles")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "offset" => "0",
  "privilege" => "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/id4i.de/1.0.2/api/v1/roles?" . http_build_query([
    "limit" => "10",
    "offset" => "0",
    "privilege" => "example"
]);
$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 ID4i API?

ID4i 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. ID4i API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗