BuiltWith
Official BuiltWith tools for website technologies, company research, relationships, and trends.
- GitHub stars
- 43
- tools
- 27
- auth
- Secret needed
- transport
- HTTP
- last updated
- Nov 10, 2026
Tools
27 toolsPublic tool metadata for what this MCP can expose to an agent.
domain-lookupLive technology detection for a domain
Live technology detection for a domain
No parameter schema in public metadata yet.
domain-apiFull domain metadata
Full domain metadata
No parameter schema in public metadata yet.
change-apiTechnology additions and removals with business context
Technology additions and removals with business context
No parameter schema in public metadata yet.
lists-apiSites using a technology, including OTHERTECHS and numeric attribute filters such as SPEND, REVENUE, and EMPLOYEES
Sites using a technology, including OTHERTECHS and numeric attribute filters such as SPEND, REVENUE, and EMPLOYEES
No parameter schema in public metadata yet.
relationships-apiRelated websites
Related websites
No parameter schema in public metadata yet.
free-apiCategory and group counts
Category and group counts
No parameter schema in public metadata yet.
company-to-urlCompany → domain discovery
Company → domain discovery
No parameter schema in public metadata yet.
tags-apiIP / attribute based discovery
IP / attribute based discovery
No parameter schema in public metadata yet.
recommendations-apiTechnology recommendations
Technology recommendations
No parameter schema in public metadata yet.
redirects-apiLive and historical redirects
Live and historical redirects
No parameter schema in public metadata yet.
keywords-apiKeyword intelligence
Keyword intelligence
No parameter schema in public metadata yet.
trends-apiTechnology trend data
Technology trend data
No parameter schema in public metadata yet.
product-apiEcommerce product search
Ecommerce product search
No parameter schema in public metadata yet.
trust-apiTrust scoring
Trust scoring
No parameter schema in public metadata yet.
vat-apiVAT, GST, and other company registration numbers for websites
VAT, GST, and other company registration numbers for websites
No parameter schema in public metadata yet.
vat-types-apiReference list of registration types returned by vat-api (no API key required)
Reference list of registration types returned by vat-api (no API key required)
No parameter schema in public metadata yet.
whoami-apiAccount limits, credit costs, and endpoint inventory (no API credits)
Account limits, credit costs, and endpoint inventory (no API credits)
No parameter schema in public metadata yet.
usage-apiCurrent credit balance (no API credits)
Current credit balance (no API credits)
No parameter schema in public metadata yet.
mcp-registry-apiSearch and browse the BuiltWith MCP registry (v1) of other remote MCP servers (no API credits)
Search and browse the BuiltWith MCP registry (v1) of other remote MCP servers (no API credits)
No parameter schema in public metadata yet.
mcp-registry-v2-apiSearch and browse the BuiltWith MCP registry (v2) of other remote MCP servers, with per-endpoint auth flags and first/last detected dates (no API credits)
Search and browse the BuiltWith MCP registry (v2) of other remote MCP servers, with per-endpoint auth flags and first/last detected dates (no API credits)
No parameter schema in public metadata yet.
vector-searchSemantic similarity search across technologies and categories
Semantic similarity search across technologies and categories
No parameter schema in public metadata yet.
ask-apiNatural language website list lookup (e.g. "Magento websites in Spain"); supports full reports and pagination
Natural language website list lookup (e.g. "Magento websites in Spain"); supports full reports and pagination
No parameter schema in public metadata yet.
payment-balanceCheck your API credit balance
Check your API credit balance
No parameter schema in public metadata yet.
payment-configRetrieve your payment configuration
Retrieve your payment configuration
No parameter schema in public metadata yet.
payment-purchasePurchase API credits using your saved Stripe payment method
Purchase API credits using your saved Stripe payment method
No parameter schema in public metadata yet.
agent-auth-startStart Agent Device-Code Authorization (no API key required)
Start Agent Device-Code Authorization (no API key required)
No parameter schema in public metadata yet.
agent-auth-tokenPoll for authorization result and retrieve access token (no API key required)
Poll for authorization result and retrieve access token (no API key required)
No parameter schema in public metadata yet.
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🔍 BuiltWith MCP Server 🚀
Current API endpoints
Uses Domain v26, Lists v13, Relationships v5, and MCP Registry v2 where supported. Existing unversioned registry methods now use v2; explicit v2 aliases remain available. Registry JSON is an array with per-endpoint tools and discovery Overview objects.
Relationships requests return one page (up to 1000 records). Pass next_page as PAGE while more_results is true, keeping the lookup domain and IP option unchanged. OFFSET and SKIP are not supported. Bulk Domain retains its separate /v23/domain/bulk routes.
Domain API v26
Domain lookups now use API v26. Technology records include numeric confidence scores from 0 to 1. Full JSON responses include Meta.company_reg, an array of company registration records with string type and number fields; registration numbers preserve leading zeros. The array is empty when unavailable or metadata is excluded. See the API reference. Full domain methods preserve both fields; live technology lookups include confidence and return technology records only.
🌟 Overview
Details
- Repository
- github.com/builtwith/builtwith-mcp
- Website
- api.builtwith.com
- Category
- Sales & Marketing
- Transport
- HTTP
- Auth
- Required
- Registry
- MCP registry, active
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