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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)
terminal
claude mcp add mcparmory-builtwith -- uvx mcparmory-builtwith

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repo stars29
Packagemcparmory-builtwith
TransportSTDIO
AuthNone
Last updatedMay 12, 2026
Repositorymcparmory/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
At a glance

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
From the docs

What Builtwith says it does

Detect technologies and tech stacks used on any website
README.md
README.md

MCP Armory

MCP Armory Registry

Production-ready MCP servers for popular APIs, generated by MCP Blacksmith.

GitHub Stars License Servers Python 3.11+

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 LearningElevenLabs · Linkup · Parallel · Perplexity AI · Ragie · Replicate

📊 AnalyticsAhrefs · Datadog · Google Analytics · Google Search Console · Linkly · Mixpanel · PostHog

⛓️ Blockchain & CryptoAlchemy NFT

💼 CRM & SalesApollo

💬 CommunicationAtlassian Confluence · Google Gmail · MailerSend · Mailtrap · Postmark · Resend · Slack

🗄️ Data & DatabasesEnigma · Pinecone

🛠️ Developer ToolsAgentQL · Apify · Bitbucket · Bright Data · Browserbase · BuiltWith · Canvas · CircleCI · Codacy · Contentful Management · ConvertAPI · E2B · Firecrawl · GitHub · GitLab · LaunchDarkly · Postman · Scrapingant · Semrush AppCenter · Sentry

📄 Documents & PrintingPDF.co

🛒 E-commerceShopify Admin

💰 FinanceAlpha Vantage · Polygon · Ramp

👥 HR & RecruitingBambooHR

☁️ InfrastructureGlobalping · Grafana · PagerDuty · Rootly · Runpod

⚖️ Legal & ComplianceNetLicensing

🗺️ Maps & LocationGoogle Maps Platform · IP2Location.io IP Geolocation · OpenCage Geocoding

📣 MarketingCustomer.io Journeys Track · Klaviyo

🎬 Media & EntertainmentCanva · Perigon

ProductivityAirtable · Asana · Atlassian Jira · ClickUp · Figma · Google Sheets · Miro · Notion · Outline · Shortcut

🔍 SearchAlgolia Search · Google Search

📦 StorageBox · Files.com · Google Drive

📌 OtherClose

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:

  1. Parses an OpenAPI specification
  2. Transforms operations through LLM-driven passes (naming, parameter filtering, enhancement, classification)
  3. Generates a complete MCP server with auth, models, validation, and configuration
  4. Tests every tool against the live API using an autonomous agent
  5. 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.


MCP Armory · MCP Blacksmith · Docs

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.

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