NAV
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Introduction

Welcome to the OnlineCompiler.io API! This API allows you to execute code snippets in various programming languages and receive the output in a standardized format. Whether you're a seasoned developer or a beginner learning to code, our API provides a convenient way to test and execute code without setting up a local development environment.

Key Features

Getting Started

To start using the Online Compiler OnlineCompiler.io API, you'll need to create an account and obtain an API key. Once you have an API key, you can make API requests using any programming language or HTTP client library.

Create an API Key on Online Compiler

Online Compiler uses API keys to allow access to the API. You can register a new Online Compiler API key at our Online Compiler portal.

Go to API keys and Click on the + Create New button.

Enter your App Name and Redirect Url .

After Execution Of Your Program Result/Output will sent to Redirect Url directly.

Authentication

To authorize, use this code:

import requests

reqUrl = "https://onlinecompiler.io/api/v2/run-code/"

headersList = {
 "Accept": "*/*",
 "Authorization": "<api key>",
 "Content-Type": "application/json" 
}

response = requests.request("POST", reqUrl ,headers=headersList)

# With shell, you can just pass the correct header with each request
curl -X POST \
  'https://onlinecompiler.io/api/v2/run-code/' \
  --header 'Accept: */*' \
  --header 'Authorization: <api Key>'

let headersList = {
 "Accept": "*/*",
 "Authorization": "<api key>",
 "Content-Type": "application/json"
};

let response = await fetch("https://onlinecompiler.io/api/v2/run-code/", { 
  method: "POST",
  headers: headersList
});

let data = await response.text();

Make sure to replace <api key> with your API key.

Online Compiler expects for the API key to be included in all API requests to the server in a header that looks like the following:

Authorization: <api key>

API's

Post Your Code

import requests
import json

reqUrl = "https://onlinecompiler.io/api/v2/run-code/"

headersList = {
 "Accept": "*/*",
 "Authorization": "<api key>",
 "Content-Type": "application/json" 
}

payload = json.dumps({
    "code": "print(\"Hello world\")\nstart = input()\nend = input()\nfor i in range(int(start), int(end)):\n    print(i)",
    "input": "1\n10",
    "compiler": "python-3.9.7"
})

response = requests.request("POST", reqUrl, data=payload,  headers=headersList)

print(response.text)

wget --quiet \
  --method POST \
  --header 'Accept: */*' \
  --header 'Authorization: <api key>' \
  --header 'Content-Type: application/json' \
  --body-data '{\n    "code": "print(\"Hello world\")\nstart = input()\nend = input()\nfor i in range(int(start), int(end)):\n    print(i)",\n    "input": "1\n10",\n    "compiler": "python-3.9.7"\n}' \
  --output-document \
  - https://onlinecompiler.io/api/v2/run-code/

let headersList = {
 "Accept": "*/*",
 "Authorization": "<api key>",
 "Content-Type": "application/json"
}

let bodyContent = JSON.stringify({
    "code": "print(\"Hello world\")\nstart = input()\nend = input()\nfor i in range(int(start), int(end)):\n    print(i)",
    "input": "1\n10",
    "compiler": "python-3.9.7"
});

let response = await fetch("https://onlinecompiler.io/api/v2/run-code/", { 
  method: "POST",
  body: bodyContent,
  headers: headersList
});

let data = await response.text();
console.log(data);

The above command returns like this:

  Ok

HTTP Request

POST https://onlinecompiler.io/api/v2/run-code/

This endpoint will execute and send your response to your callback_url.

Avaliabe compilers are :

  1. python-3.9.7
  2. python-2.7.18
  3. gcc-4.9
  4. g++-4.9
  5. openjdk-11
  6. dotnet-csharp-5
  7. dotnet-fsharp-5
  8. php-8.1
  9. ruby-3.0.2
  10. haskell-9.2.7

Errors

The Online Compiler API uses the following error codes:

Error Code Meaning
400 Bad Request -- Your request is invalid.
401 Unauthorized -- Your API key is wrong.
403 Forbidden -- The Online Compiler requested is hidden for administrators only.
404 Not Found -- The specified Online Compiler could not be found.
405 Method Not Allowed -- You tried to access a Online Compiler with an invalid method.
406 Not Acceptable -- You requested a format that isn't json.
429 Too Many Requests -- You're requesting too many Online Compilers! Slow down!
500 Internal Server Error -- We had a problem with our server. Try again later.
503 Service Unavailable -- We're temporarily offline for maintenance. Please try again later.
shell python javascript