Stack0
Products/Extraction

AI Data Extraction

Turn any webpage into structured JSON. AI-powered extraction that understands meaning, not just HTML. Define your schema, get structured data.

Start ExtractingView Docs

$2.00 / 1,000 extractions

// Extract product data with schema
const product = await stack0.extraction.extractAndWait({
  url: 'https://store.example.com/product/123',
  mode: 'schema',
  schema: {
    type: 'object',
    properties: {
      name: { type: 'string' },
      price: { type: 'number' },
      inStock: { type: 'boolean' },
      rating: { type: 'number' },
    },
  },
})
 
console.log(product.extractedData)
// { name: '...', price: 29.99, inStock: true, rating: 4.5 }
AutoSchemaMarkdownHTMLBatchRAG Ready

Features

What's included

Auto Mode

AI automatically identifies and extracts the most relevant content.

Schema Mode

Define your structure with JSON Schema. Get consistent, typed output.

Markdown Mode

Convert page content to clean, formatted markdown with links.

HTML Mode

Get raw HTML for custom parsing when you need full control.

Custom Prompts

Guide extraction with natural language instructions.

No Maintenance

No CSS selectors to update when sites change their HTML.

Capabilities

Built for production

Semantic Understanding

AI understands content meaning, not just HTML structure.

mode: 'auto' // AI determines what's important

Schema Validation

JSON Schema support ensures you always get the structure you expect.

schema: { type: 'object', properties: { ... } }

Batch Processing

Extract from multiple URLs with shared schema in parallel.

stack0.extraction.batchAndWait({ urls, config })

Dynamic Content

Handle SPAs and lazy-loaded content with wait conditions.

waitForSelector: '.content-loaded'

Guided Extraction

Add prompts to focus AI on specific content or filter results.

prompt: 'Extract only technical team members'

Webhook Support

Start async extractions and receive results via webhook.

webhookUrl: 'https://yourapp.com/webhook'

Use cases

Built for real applications

RAG Data Pipelines

Feed structured web content into retrieval-augmented generation systems.

Agent World Knowledge

Give AI agents structured understanding of web pages they visit.

Price Monitoring

Track competitor pricing across hundreds of products automatically.

Company Enrichment

Extract company details, team info, and tech stack from websites.

News Aggregation

Build custom feeds from multiple sources with consistent structure.

Content Migration

Convert web content to markdown for CMS imports.

Pricing

Simple, usage-based

Extractions
$2.00/ 1,000 extractions
All extraction modes included
AI tokens included in price
JSON Schema validation
Custom prompts
Page metadata included
Batch processing
Webhook notifications
Get Started

Plans start at $5/month. No long-term contracts.

FAQ

Frequently asked questions

Traditional scraping uses CSS selectors that break when sites change. AI extraction understands content semantically—it finds the price whether it's in a <span>, <div>, or <p>. Your schema defines what you want, not where to find it.

Four modes: Auto (AI determines what's important), Schema (you define the structure), Markdown (clean formatted text), and HTML (raw content for custom parsing).

Yes. Add a prompt to any extraction to focus the AI on specific content, filter results, or provide context about what you're looking for.

Use waitForSelector to wait for elements to appear, or waitForTimeout for a delay. This handles SPAs, lazy-loading, and JavaScript-rendered content.

Yes. The $2/1K extractions price includes all AI processing. No separate token charges.

Yes. Use batch extraction to process multiple URLs with a shared schema. Results are processed in parallel with webhook notifications.

Ready to build?

Plans start at $5/month.

Start Extracting