io.github.builtwith/builtwith
BuiltWith
Is the BuiltWith MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-10.
Official BuiltWith tools for website technologies, company research, relationships, and trends.
alive probed 2026-11-14 · unchanged since 2026-11-10 · HTTP 200
- Endpoint
- https://api.builtwith.com/mcp (streamable-http)
- Host
- api.builtwith.com
- Protocol
- 2025-11-25
- Reports itself as
- builtwith 2.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- 384 characters
- Of a 1M window
- 1.1 % of a 1M context window
- Count
- 11k tokens in Claude Opus 5.5, exact, measured 2026-11-10. With the Claude Code prefix mcp__…__ on each tool name: 12k. The o200k_base estimate is 6.0k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/builtwith/builtwith-mcp
- Website
- https://api.builtwith.com/
- Registry
- active, updated 2026-11-10 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.86×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| x402-list-api | 662 | 356 | 6 % |
| list-api | 535 | 288 | 5 % |
| mpp-purchase | 472 | 254 | 4 % |
| mpp-data | 433 | 233 | 4 % |
| mcp-list-api | 416 | 224 | 4 % |
Compare this server with others.
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Servers that mention builtwith.
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- RMCP dev.rmcp/rmcp · alive
- Tech Stack Detector: Wappalyzer & BuiltWith Alt, CSV or Sheet io.github.Nero-Engine/tech-stack-detector · needs auth
- com.mcparmory/builtwith · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.