Using Rust

How to Scrape Facebook Post Comments with Rust

Get comments from a Facebook post or reel using Rust. This comprehensive guide will walk you through the entire process, from setup to implementation.

Overview

What You'll Learn

Setting up your Rust environment
Installing the required HTTP client
Authenticating with SociaVault API
Making requests to Facebook
Handling responses and errors

What You'll Get

Access to post comments data
JSON formatted responses
Real-time data access
Scalable solution
Error handling patterns

Prerequisites

1. API Key

First, you'll need a SociaVault API key to authenticate your requests.

Get your free API key

2. Development Environment

Make sure you have the following installed:

Rust installed
A code editor (VS Code, Sublime, etc.)
Command line interface access

Implementation

Step 1: Install HTTP Client

We'll use reqwest to make HTTP requests.

bash

cargo add reqwest tokio

Step 2: API Implementation

Now let's make a request to the Facebook API using Rust. Replace YOUR_API_KEY with your actual API key.

rust

use reqwest;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    let resp = client.get("https://api.sociavault.com/facebook/post/comments?url=https%3A%2F%2Fwww.facebook.com%2Freel%2F753347914167361")
        .header("x-api-key", "YOUR_API_KEY")
        .header("Content-Type", "application/json")
        .send()
        .await?
        .text()
        .await?;

    println!("{}", resp);
    Ok(())
}

Testing Your Code

API Parameters

Parameter	Type	Required	Description
url	string	Yes	Example: `https://www.facebook.com/reel/753347914167361`

Expected Response

You should receive a structured JSON response containing the post comments data.

json

{
  "success": true,
  "comments": [
    {
      "id": "Y29tbWVudDoxMjA2OTAzNjAxNDgzOTYwXzc4NzQ2NjY0NzI2NTk4Mw==",
      "text": "How are you not 300lbs?",
      "created_at": "2025-09-01T00:38:58.000Z",
      "reply_count": 16,
      "reaction_count": 76,
      "author": {
        "id": "pfbid0Ay28K5Lc7QpQLD8wZEHrq4ertocvWcZApjZjDoRqfkYQSzSxaPBS7qFt53v95rERl",
        "name": "George Bergerac",
        "gender": "MALE",
        "profile_picture": "https://scontent-iad3-2.xx.fbcdn.net/v/t39.30808-1/505842751_10236156984095460_2868572328330516064_n.jpg?stp=cp0_dst-jpg_p64x64_tt6&_nc_cat=111&ccb=1-7&_nc_sid=e99d92&_nc_ohc=g-I4H6KKM6MQ7kNvwFuygDF&_nc_oc=AdnwxxAwIfIChiaCwfglGjg0KQPGmQ1OGj63ApE0s61cGAfuYk3N_GRergiUg3NRJdE&_nc_zt=24&_nc_ht=scontent-iad3-2.xx&_nc_gid=bSL3vZeoZ5ZB38ahoYqBtg&oh=00_AfZaDkoSLpJpbQieLDeGB_yykXQsr1Nv8hM_VfkUA1BcdA&oe=68C11D0D",
        "short_name": "George"
      }
    }
  ],
  "cursor": "MToxNzU3MTA2NzYyOg....",
  "has_next_page": true
}

Best Practices

Error Handling

Implement comprehensive error handling and retry logic for failed requests. Log errors properly for debugging.

Caching

Cache responses when possible to reduce API calls and improve performance. Consider data freshness requirements.

Security

Never expose your API key in client-side code. Use environment variables and secure key management practices.

Troubleshooting

401

Unauthorized

Check your API key is correct and properly formatted in the x-api-key header.

402

Payment Required

You ran out of credits and need to buy more.

404

Not Found

The resource (user, video, etc.) might not exist or be private.

429

Too Many Requests

You have exceeded your rate limit. Slow down your requests.

Frequently Asked Questions

How much does it cost to scrape Facebook?

SociaVault offers 50 free API calls to get started. After that, pricing starts at $10 for 5k requests with volume discounts available.

Is it legal to scrape Facebook data?

Scraping publicly available data is generally considered legal. We only collect public data that is accessible without logging in.

How fast can I scrape Facebook?

Our API handles the rate limiting for you. You can make requests as fast as your plan allows.

What data format does the API return?

All API responses are returned in JSON format, making it easy to integrate with any programming language or application.

Start Scraping Free View Documentation