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Connect websites to automatically crawl and sync web pages into your Supermemory knowledge base. The web crawler respects robots.txt rules, includes SSRF protection, and automatically recrawls sites on a schedule.
The web crawler connector requires a Scale Plan or Enterprise Plan.

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Quick Setup

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1. Create Web Crawler Connection

import Supermemory from 'supermemory';

const client = new Supermemory({
  apiKey: process.env.SUPERMEMORY_API_KEY!
});

const connection = await client.connections.create('web-crawler', {
  redirectUrl: 'https://yourapp.com/callback',
  containerTags: ['user-123', 'website-sync'],
  documentLimit: 5000,
  metadata: {
    startUrl: 'https://docs.example.com'
  }
});

// Web crawler doesn't require OAuth - connection is ready immediately
console.log('Connection ID:', connection.id);
console.log('Connection created:', connection.createdAt);
// Note: connection.authLink is undefined for web-crawler

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2. Connection Established

Unlike other connectors, the web crawler doesn’t require OAuth authentication. The connection is established immediately upon creation, and crawling begins automatically.

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3. Monitor Sync Progress

// Check connection details
const connection = await client.connections.getByTags('web-crawler', {
  containerTags: ['user-123', 'website-sync']
});

console.log('Start URL:', connection.metadata?.startUrl);
console.log('Connection created:', connection.createdAt);

// List synced web pages
const documents = await client.connections.listDocuments('web-crawler', {
  containerTags: ['user-123', 'website-sync']
});

console.log(`Synced ${documents.length} web pages`);

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Supported Content Types

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Web Pages

  • HTML content extracted and converted to markdown
  • Same-domain crawling only (respects hostname boundaries)
  • Robots.txt compliance - respects disallow rules
  • Content filtering - only HTML pages (skips non-HTML content)

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URL Requirements

The web crawler only processes valid public URLs:
  • Must be a public URL (not localhost, private IPs, or internal domains)
  • Must be accessible from the internet
  • Must return HTML content (non-HTML files are skipped)

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Sync Mechanism

The web crawler uses scheduled recrawling rather than real-time webhooks:
  • Initial Crawl: Begins immediately after connection creation
  • Scheduled Recrawling: Automatically recrawls sites that haven’t been synced in 7+ days
  • No Real-time Updates: Unlike other connectors, web crawler doesn’t support webhook-based real-time sync
The recrawl schedule is automatically assigned when the connection is created. Sites are recrawled periodically to keep content up to date, but updates are not instantaneous.

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Connection Management

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List All Connections

// List all web crawler connections
const connections = await client.connections.list({
  containerTags: ['user-123']
});

const webCrawlerConnections = connections.filter(
  conn => conn.provider === 'web-crawler'
);

webCrawlerConnections.forEach(conn => {
  console.log(`Start URL: ${conn.metadata?.startUrl}`);
  console.log(`Connection ID: ${conn.id}`);
  console.log(`Created: ${conn.createdAt}`);
});

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Delete Connection

Remove a web crawler connection when no longer needed: 
// Delete by connection ID
const result = await client.connections.delete('connection_id_123');
console.log('Deleted connection:', result.id);

// Delete by provider and container tags
const providerResult = await client.connections.deleteByProvider('web-crawler', {
  containerTags: ['user-123']
});
console.log('Deleted web crawler connection for user');
Deleting a connection will:
  • Stop all future crawls from the website
  • Keep existing synced documents in Supermemory (they won’t be deleted)
  • Remove the connection configuration

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Advanced Configuration

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Content Filtering

Control which web pages get synced using the settings API: 
// Configure intelligent filtering for web content
await client.settings.update({
  shouldLLMFilter: true,
  includeItems: {
    urlPatterns: ['*docs*', '*documentation*', '*guide*'],
    titlePatterns: ['*Getting Started*', '*API Reference*', '*Tutorial*']
  },
  excludeItems: {
    urlPatterns: ['*admin*', '*private*', '*test*'],
    titlePatterns: ['*Draft*', '*Archive*', '*Old*']
  },
  filterPrompt: "Sync documentation pages, guides, and API references. Skip admin pages, private content, drafts, and archived pages."
});

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Security & Compliance

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SSRF Protection

Built-in protection against Server-Side Request Forgery (SSRF) attacks:
  • Blocks private IP addresses (10.x.x.x, 192.168.x.x, 172.16-31.x.x)
  • Blocks localhost and internal domains
  • Blocks cloud metadata endpoints
  • Only allows public, internet-accessible URLs

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URL Validation

All URLs are validated before crawling:
  • Must be valid HTTP/HTTPS URLs
  • Must be publicly accessible
  • Must return HTML content
  • Response size limited to 10MB
Important Limitations:
  • Requires Scale Plan or Enterprise Plan
  • Only crawls same-domain URLs
  • Scheduled recrawling means updates are not real-time
  • Large websites may take significant time to crawl initially
  • Robots.txt restrictions may prevent crawling some pages
  • URLs must be publicly accessible (no authentication required)