M
API Matrix

vk API

Social / OAuth Advanced HTTPS
Varies by plan (check documentation)
63 Score
Grade C
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Overview

VK (VKontakte) is one of the largest social networks in Eastern Europe, and its API lets you access user profiles, posts, groups, and messages using OAuth authentication. The API covers a wide range of social features similar to other major platforms, with documentation primarily available in Russian. It is a good choice for developers building apps for Russian-speaking audiences.

💡

Beginner Tip

Register your app at vk.com/dev to get your client_id and client_secret; most API methods require a user access token obtained via OAuth, and you must always include v=5.131 (or the current version) in every request.

Available Data

Use case: Integrate read and write vk data data into web and mobile applications
vk data via REST API
JSON-formatted response data
Requires OAuth authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from vk",
    "description": "Read and write vk data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

response The main payload of the API response; its structure depends on the method called.
response[].id Unique VK user or object identifier.
response[].first_name User first name as displayed on their VK profile.
response[].last_name User last name as displayed on their VK profile.
error.error_code Numeric code identifying the type of error that occurred.
error.error_msg Human-readable description of the error.

Implementation Example 

const url = "https://vk.com/dev/sites";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Error 5: User authorization failed The access_token is invalid, expired, or missing from the request.
✓ Re-authenticate the user through the OAuth flow to obtain a fresh access token.
Error 14: Captcha needed VK has detected unusual activity and is requiring a CAPTCHA challenge.
✓ Handle the captcha_sid and captcha_img fields in the error response and present the CAPTCHA to the user.
Error 29: Rate limit reached Your app has exceeded 3 requests per second for a given method.
✓ Implement a request queue with delays to stay under 3 API calls per second.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 3/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth OAuth
HTTPS REQUIRED
CORS UNKNOWN
Category Social
Difficulty Advanced
Verified: 2026-04-07

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