Web Scraping API

AI Training Data Collection API

Build diverse training datasets for machine learning models by extracting structured content from public web sources at scale.

$2.4B by 2027 AI training data market10-50% accuracy gain Data quality impact on models60%+ of LLM data Web as training source

How It Works

1

Define data requirements

Specify the content types, domains, and volume needed for your model training pipeline.

2

Extract at scale

Use batch processing to collect thousands of pages with consistent structured output for your datasets.

3

Clean and validate

Receive pre-structured data that reduces preprocessing time and improves dataset quality.

Quick Start

cURL
curl -X POST https://alterlab.io/api/v1/scrape \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://knowledge-base.com/articles/topic",
    "extract": {
      "title": "string",
      "content": "string",
      "category": "string",
      "published_date": "string"
    }
  }'

Need an API key? Sign up free — no credit card required.

Related Data Extraction Guides

Reddit Data ExtractionGoogle Data Extraction

Related Use Cases

Ai Training Data

Frequently Asked Questions

Responsible Use

AlterLab is designed for extracting publicly available data. Always review the terms of service for any website you access, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction.

Your first scrape.
Sixty seconds.

$1 free balance. No credit card. No SDK.Just a POST request.

terminal
curl -X POST https://api.alterlab.io/v1/scrape \
-H "X-API-Key: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://example.com", "formats": ["markdown"]}'

No credit card required · Up to 5,000 free scrapes · Balance never expire