Developer Tools

builtwith.com

Provides API lookups for web technologies, metadata, and relationships by domain.

WebMCP x402 supported2 endpoints49 known toolsFirst detected May 11, 2026Last detected September 6, 2026

ENDPOINT 1

https://api.builtwith.com/mcp

No auth detected

MCP server metadata

Name: builtwith
Version: 2.0.0

Capabilities

resources.listChangedtools.listChangedprompts.listChanged

Known tools 48

domain-lookup

Returns the live web technologies used on the root domain name.

Inferred read-only

domain-api

Domain API JSON lookup for technology and metadata by domain.

Inferred read-only

domain-api-json

Raw Domain API JSON lookup for technology and metadata by domain.

Inferred read-only

change-api

Change API JSON lookup for technology additions and removals by domain.

Inferred read-only

relationships-api

Relationships API JSON lookup for related websites by domain.

Inferred read-only

free-api

Free API JSON lookup for category/group counts by domain.

Inferred read-only

company-to-url

Company to URL API JSON lookup for domains from a company name.

Inferred read-only

tags-api

Tags API JSON lookup for related domains from IP or attributes.

Inferred read-only

recommendations-api

Recommendations API JSON lookup for technology recommendations by domain.

Inferred read-only

redirects-api

Redirects API JSON lookup for live and historical redirects by domain.

Inferred read-only

keywords-api

Keywords API JSON lookup for keyword data by domain.

Inferred read-only

keywords-search-api

Keyword Search API — find websites containing a specific keyword.

Inferred read-only

trends-api

Trends API JSON lookup for technology trend data.

Inferred read-only

product-api

Product API JSON lookup for ecommerce product searches.

Inferred read-only

trust-api

Trust API JSON lookup for trust scoring by domain.

Inferred read-only

vat-api

VAT API JSON lookup for VAT, GST, CNPJ, ABN, and other publicly displayed company registration numbers associated with websites.

Inferred read-only

vat-types-api

List every company registration type that the VAT API may return, including its code, friendly name, and description.

Inferred read-only

whoami-api

WhoAmI API JSON lookup for account limits, credit costs, privacy flags, max batch sizes, and endpoint inventory.

Inferred read-only

usage-api

Usage API JSON lookup for current credit balance (used, purchased, remaining).

Inferred read-only

mcp-list-api

Search and browse remote MCP servers in the BuiltWith MCP registry (v2).

Inferred read-only

mcp-list-categories

List valid BuiltWith MCP registry category slugs, labels, and entry counts (v2).

Inferred read-only

list-api

List API JSON lookup for websites using a primary technology.

Inferred read-only

payment-balance

Check an existing account's API-credit balance through the saved-Stripe-method top-up service.

Potential side effects

payment-config

Retrieve saved-Stripe-method account top-up limits, UTC monthly period, purchase increment, and idempotency rules.

Potential side effects

payment-purchase

Charge an existing account's saved Stripe payment method and add account API credits.

Potential side effects

vector-api

Search BuiltWith technologies and categories by text query using vector similarity.

Inferred read-only

ask-api

Ask API lookup for natural language website list queries.

Inferred read-only

ask-api-json

Raw Ask API JSON lookup for app/internal use.

Inferred read-only

x402-pricing

Show prepaid batch-credit pricing, x402 configuration, and List pass tiers.

Inferred read-only

x402-credit-purchase

Purchase a batch of at least 2,000 non-expiring BuiltWith API credits with one x402 payment.

Potential side effects

x402-credit-balance

Check purchased, used, pending, and available credits for a reusable prepaid key.

Inferred read-only

x402-domain-lookup

Returns live web technologies for one domain using one prepaid credit.

Inferred read-only

x402-domain-api

Domain API technology and metadata lookup for one domain using one prepaid credit.

Inferred read-only

x402-domain-api-json

Raw Domain API JSON lookup for one or more comma-separated domains.

Inferred read-only

x402-change-api

Technology additions and removals for one or more comma-separated domains.

Inferred read-only

x402-relationships-api

Related websites for a domain.

Inferred read-only

x402-company-to-url

Domains associated with a company name.

Inferred read-only

x402-tags-api

Related domains from an IP address or attributes.

Inferred read-only

x402-recommendations-api

Technology recommendations for a domain.

Inferred read-only

x402-redirects-api

Live and historical redirects for a domain.

Inferred read-only

x402-keywords-api

Keyword data for a domain.

Inferred read-only

x402-trust-api

Trust score for a domain.

Inferred read-only

x402-vat-api

Public company registration identifiers for one to sixteen domains.

Inferred read-only

x402-vector-api

Vector similarity search across BuiltWith technologies and categories.

Inferred read-only

x402-list-pass-purchase

Purchase a 30-day Basic ($295, 2 technology and 2 keyword reports) or Pro ($495, 50 and 50) List API pass with Base USDC.

Potential side effects

x402-list-api

List websites using a primary technology with a valid x402 List pass.

Inferred read-only

x402-keywords-search-api

Search websites containing a keyword with a valid x402 List pass.

Inferred read-only

x402-ask-api

Natural-language website query using one prepaid credit.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.builtwith]
url = "https://api.builtwith.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "builtwith": {
      "type": "http",
      "url": "https://api.builtwith.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: builtwith
Remote MCP URL: https://api.builtwith.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "builtwith": {
      "url": "https://api.builtwith.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "builtwith": {
      "type": "http",
      "url": "https://api.builtwith.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "builtwith",
  "transport": "streamable-http",
  "url": "https://api.builtwith.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 2

https://builtwith.com

No auth detected

MCP server metadata

Name: WebMCP

Capabilities

declarative

Known tools 1

builtwithLookup

Look up a website, technology or keyword using BuiltWith.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.webmcp]
url = "https://builtwith.com"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "webmcp": {
      "type": "http",
      "url": "https://builtwith.com"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: webmcp
Remote MCP URL: https://builtwith.com

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "webmcp": {
      "url": "https://builtwith.com"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "webmcp": {
      "type": "http",
      "url": "https://builtwith.com"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "webmcp",
  "transport": "streamable-http",
  "url": "https://builtwith.com"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for builtwith.com was fetched 2026-08-26T23:01:57.880Z and is being refreshed.

Trust status Trusted

builtwith.com is assessed as Trusted: Domain has an established technology history spanning over a year.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.