
Builtwith
- 29 repo stars
- Updated May 12, 2026
- mcparmory/registry
BuiltWith is an MCP server that detects the technologies and tech stacks a website runs, from frameworks and CDNs to marketing pixels.
About
BuiltWith is an MCP Armory server that wraps BuiltWith-style website technology detection so an agent can report what frameworks, CDNs, marketing pixels, and ecommerce plugins any website runs. A developer doing competitor recon in the idea or validation stage uses it to inspect a domain's tech stack conversationally instead of opening a tab per site. It runs as a local stdio Python package generated from BuiltWith's upstream OpenAPI spec.
- Wraps BuiltWith website-tech detection over MCP
- Detect frameworks, CDNs, pixels, and ecommerce plugins on any site
- Local stdio Python package (uvx or Docker)
Builtwith by the numbers
- Data as of Jul 26, 2026 (Skillselion catalog sync)
claude mcp add mcparmory-builtwith -- uvx mcparmory-builtwithAdd your badge
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| repo stars | ★ 29 |
|---|---|
| Package | mcparmory-builtwith |
| Transport | STDIO |
| Auth | None |
| Last updated | May 12, 2026 |
| Repository | mcparmory/registry ↗ |
What it does
research
Who is it for?
Developers and founders doing competitor tech-stack recon while researching or validating an idea.
Skip if: Teams that need deep first-party product analytics rather than third-party site detection.
What you get
Your agent can query site technology profiles inline and feed them into positioning, scope, and integration decisions.
- Per-domain technology and stack summaries in agent chat
- Research inputs for validate scope and integration choices
- Configured MCP server entry (PyPI or OCI)
By the numbers
- Part of a 79-server MCP Armory registry
Builtwith capabilities & compatibility
Free package; needs a BuiltWith account/API key for the underlying detection API.
- Works with
- docker
- Use cases
- research
- Platforms
- macOS · Windows · Linux
- Runs
- Runs locally
- Pricing
- Bring your own API key
What Builtwith says it does
Detect technologies and tech stacks used on any website
README.md
MCP Armory Registry
Production-ready MCP servers for popular APIs, generated by MCP Blacksmith.
Servers · Install & Usage · Features · How it works · License
MCP servers that connect AI agents to real-world APIs. Each server is a standalone Python package — generated from the upstream OpenAPI spec using MCP Blacksmith and tested against the live API before release. Hosted on MCP Armory or run independently.
Servers
🧠 AI & Machine Learning ElevenLabs · Linkup · Parallel · Perplexity AI · Ragie · Replicate
📊 Analytics Ahrefs · Datadog · Google Analytics · Google Search Console · Linkly · Mixpanel · PostHog
⛓️ Blockchain & Crypto Alchemy NFT
💼 CRM & Sales Apollo
💬 Communication Atlassian Confluence · Google Gmail · MailerSend · Mailtrap · Postmark · Resend · Slack
🗄️ Data & Databases Enigma · Pinecone
🛠️ Developer Tools AgentQL · Apify · Bitbucket · Bright Data · Browserbase · BuiltWith · Canvas · CircleCI · Codacy · Contentful Management · ConvertAPI · E2B · Firecrawl · GitHub · GitLab · LaunchDarkly · Postman · Scrapingant · Semrush AppCenter · Sentry
📄 Documents & Printing PDF.co
🛒 E-commerce Shopify Admin
💰 Finance Alpha Vantage · Polygon · Ramp
👥 HR & Recruiting BambooHR
☁️ Infrastructure Globalping · Grafana · PagerDuty · Rootly · Runpod
⚖️ Legal & Compliance NetLicensing
🗺️ Maps & Location Google Maps Platform · IP2Location.io IP Geolocation · OpenCage Geocoding
📣 Marketing Customer.io Journeys Track · Klaviyo
🎬 Media & Entertainment Canva · Perigon
✅ Productivity Airtable · Asana · Atlassian Jira · ClickUp · Figma · Google Sheets · Miro · Notion · Outline · Shortcut
🔍 Search Algolia Search · Google Search
📦 Storage Box · Files.com · Google Drive
📌 Other Close
More servers are being added continuously.
Install & Usage
Every server is a standalone PyPI package (mcparmory-<server-name>). Each server's own README.md has full credential setup and configuration instructions.
# With uvx (no install needed)
uvx mcparmory-github
# With pip
pip install mcparmory-github
mcparmory-github
MCP client configuration (Claude Desktop, Cursor, Codex, Claude Code):
{
"mcpServers": {
"github": {
"command": "uvx",
"args": ["mcparmory-github"],
"env": {
"BEARER_TOKEN": "ghp_your_token_here"
}
}
}
}
Features
Every server in this registry provides:
- Full API coverage — all endpoints from the OpenAPI spec are exposed as MCP tools
- Authentication — API key, Bearer token, Basic auth, OAuth2, JWT, OpenID Connect, and mutual TLS
- Multi-auth — servers that support multiple auth methods let you configure whichever you prefer
- Pydantic validation — request parameters are validated before sending to the API
- Resilience — configurable retries with exponential backoff, connection pooling, and timeouts
- Response sanitization — optional redaction of sensitive fields from API responses
How servers are generated
Servers are generated by MCP Blacksmith, an automated pipeline that:
- Parses an OpenAPI specification
- Transforms operations through LLM-driven passes (naming, parameter filtering, enhancement, classification)
- Generates a complete MCP server with auth, models, validation, and configuration
- Tests every tool against the live API using an autonomous agent
- Deploys passing servers to this registry
The generator targets Python 3.11+ and uses FastMCP as the MCP framework.
Contributing
Servers are auto-generated — don't edit server code directly. If you find an issue, open a GitHub Issue describing:
- Broken or deprecated endpoints
- Missing or incorrect parameters
- Authentication problems
- Incorrect request/response models
We'll re-generate the affected server with the fix. To request a new server, open an issue with a link to the API's OpenAPI spec or documentation.
License
Each generated server is released under the MIT License. The underlying APIs have their own terms of service — see individual server READMEs for details.
Recommended MCP Servers
How it compares
Competitor tech recon MCP tool, not a codebase architecture skill.
FAQ
Who is com.mcparmory/builtwith for?
Solo builders and marketers who research competitor websites and want stack details surfaced inside Claude Code or Cursor.
When should I use com.mcparmory/builtwith?
Early Idea and Validate work when comparing rivals, scouting integrations, or drafting build plans informed by what similar products use.
How do I add com.mcparmory/builtwith to my agent?
Register the stdio MCP server with `uvx mcparmory-builtwith` or Docker `ghcr.io/mcparmory/builtwith:1.0.3`, plus API credentials required by the provider.