OpenALPR CarCheck API

openalpr · Cloud

Cloud No Auth Free & Open cloud

The OpenALPR CarCheck API allows you to send images to the cloud for processing. The image will be analyzed for license plates and vehicle make/models. The results are returned in JSON format

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET getConfig

Get a list of available results for plate and vehicle recognition

https://api.apis.guru/v2/specs/openalpr.com/3.0.1/config

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/config"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/config",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openalpr.com/3.0.1/config';

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/openalpr.com/3.0.1/config"
	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/openalpr.com/3.0.1/config")

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/openalpr.com/3.0.1/config";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST recognizeUrl

Send an image for OpenALPR to analyze and provide metadata back The image is sent as a URL. The OpenALPR service will download the image and process it

https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize_url?topn=10&country=US&image_url=example&secret_key=example&return_image=0&recognize_vehicle=0

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize_url?topn=10&country=US&image_url=example&secret_key=example&return_image=0&recognize_vehicle=0"

import requests
params = {
    "topn": "10",
    "country": "US",
    "image_url": "example",
    "secret_key": "example",
    "return_image": "0",
    "recognize_vehicle": "0"
}
response = requests.post(
    "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize_url",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize_url');
url.searchParams.set('topn', '10');
url.searchParams.set('country', 'US');
url.searchParams.set('image_url', 'example');
url.searchParams.set('secret_key', 'example');
url.searchParams.set('return_image', '0');
url.searchParams.set('recognize_vehicle', '0');

const response = await fetch(url, {
  method: 'POST',
}); 
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/openalpr.com/3.0.1/recognize_url")
	q := baseURL.Query()
	q.Set("topn", "10")
	q.Set("country", "US")
	q.Set("image_url", "example")
	q.Set("secret_key", "example")
	q.Set("return_image", "0")
	q.Set("recognize_vehicle", "0")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	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/openalpr.com/3.0.1/recognize_url")
uri.query = URI.encode_www_form({
  "topn" => "10",
  "country" => "US",
  "image_url" => "example",
  "secret_key" => "example",
  "return_image" => "0",
  "recognize_vehicle" => "0"
})

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/openalpr.com/3.0.1/recognize_url?" . http_build_query([
    "topn" => "10",
    "country" => "US",
    "image_url" => "example",
    "secret_key" => "example",
    "return_image" => "0",
    "recognize_vehicle" => "0"
]);
$opts = ["http" => [
    "method" => "POST",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST recognizeFile

Send an image for OpenALPR to analyze and provide metadata back The image is sent as a file using a form data POST

https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize?topn=10&country=US&is_cropped=0&secret_key=example&return_image=0&recognize_vehicle=0

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize?topn=10&country=US&is_cropped=0&secret_key=example&return_image=0&recognize_vehicle=0"

import requests
params = {
    "topn": "10",
    "country": "US",
    "is_cropped": "0",
    "secret_key": "example",
    "return_image": "0",
    "recognize_vehicle": "0"
}
response = requests.post(
    "https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/openalpr.com/3.0.1/recognize');
url.searchParams.set('topn', '10');
url.searchParams.set('country', 'US');
url.searchParams.set('is_cropped', '0');
url.searchParams.set('secret_key', 'example');
url.searchParams.set('return_image', '0');
url.searchParams.set('recognize_vehicle', '0');

const response = await fetch(url, {
  method: 'POST',
}); 
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/openalpr.com/3.0.1/recognize")
	q := baseURL.Query()
	q.Set("topn", "10")
	q.Set("country", "US")
	q.Set("is_cropped", "0")
	q.Set("secret_key", "example")
	q.Set("return_image", "0")
	q.Set("recognize_vehicle", "0")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	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/openalpr.com/3.0.1/recognize")
uri.query = URI.encode_www_form({
  "topn" => "10",
  "country" => "US",
  "is_cropped" => "0",
  "secret_key" => "example",
  "return_image" => "0",
  "recognize_vehicle" => "0"
})

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/openalpr.com/3.0.1/recognize?" . http_build_query([
    "topn" => "10",
    "country" => "US",
    "is_cropped" => "0",
    "secret_key" => "example",
    "return_image" => "0",
    "recognize_vehicle" => "0"
]);
$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 OpenALPR CarCheck API?

OpenALPR CarCheck API is a Cloud API. Developers commonly use cloud APIs for:

provisioning and managing cloud infrastructure
automating deployments and container orchestration
monitoring uptime and performance metrics
managing storage buckets and databases
setting up auto-scaling and load balancing

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

New to APIs? Read our beginner's guide

Open documentation ↗