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What is BuiltWith API?
BuiltWith API is a collection of JSON APIs that provide technographic and firmographic intelligence about websites. It detects website technologies, offers company data (VAT numbers, financial info, trust scores), and enables technology-based prospecting and competitive intelligence.
Categories
Key features
Domain Intelligence
Current and historical website technology detection with confidence scores; tracks 128,243+ technologies
Change Tracking
Monitors technology additions/removals on domains with business context; Change API for real-time updates
Relationship Mapping
Shows connections between websites and their dependencies
Lists & Search
Identifies websites using specific technologies or keywords; technology-based lead generation
Natural Language Queries
Ask API allows plain-language lookups like 'Magento websites in Spain'
Real-time Feed
WebSocket streaming of live technology detections
Business Data
VAT numbers, financial info, trust scores, company registration details, e-commerce spend data, sales revenue estimates
Technology Recommendations
Suggestions based on similar website profiles
CRM Integrations
Salesforce, HubSpot, Microsoft Dynamics 365, Zoho CRM, Pardot integration
BuiltWith API pricing
SaaS plans include API credits per month. API credits purchased separately do not expire. Failed lookups use no credits. Free individual site lookups available at builtwith.com.
| Plan | Price | What's included |
|---|---|---|
| Advanced | $144/year | Individual detailed site lookups only, no list generation, 0 API credits, single login |
| Basic | $295/month or $2,950/year | 2 technologies, 2 keywords, 2 retail reports, 2,000 API credits/month, 1 system login, CRM integration |
| Pro | $495/month or $4,950/year | Unlimited technologies, unlimited keywords, unlimited retail reports, 20,000 API credits/month, 1 system login, CRM integration |
| Team | $995/month or $9,950/year | Unlimited everything, 100,000 API credits/month, unlimited user logins, CRM integrations |
| Team Ultra | $6,000/month or $72,000/year | High-volume access; exact inclusions require confirmation in writing |
| API Credits (Pay-as-you-go) | $99 for 2,000 credits ($0.0495/credit) | 1 credit per Domain API lookup; volume discounts available up to $0.001 per credit at 10M+ credits |
| Blockchain Pay-per-lookup | $0.0495 per lookup in USDC on Base | Accountless route via x402 USDC API |
Pros & cons
Pros
- + Comprehensive technology detection covering 128,243+ technologies
- + Historical data back to 2000; tracks technology changes over time
- + Deep business data including financial, VAT, trust scores, and e-commerce metrics
- + Multiple access options: SaaS plans, API credits, blockchain pay-per-lookup
- + Real-time technology change feeds and WebSocket streaming
- + CRM integrations with major platforms (Salesforce, HubSpot, Dynamics 365, Zoho)
- + AI agent compatibility with MCP tools and SDKs
- + Credit-based pricing model with no credit expiration
Cons
- − Plans start at $295/month, relatively high entry point
- − May retain outdated technology data; cannot see custom-built platforms
- − API rate limits: 8 requests at once, 10 per second maximum
- − Team Ultra pricing not published; requires written confirmation
- − No free API credits without a paid account (only free site lookups)
- − API credits separate from SaaS plans; can become expensive at scale
Who is BuiltWith API best for?
- • Sales prospecting and lead generation teams
- • Technology competitive intelligence
- • E-commerce product research
- • Market trend analysis and website due diligence
- • Fraud detection via trust scoring
- • AI agents needing technographic data via API
