Feedthrough runs a bridge inside a running web page to expose browser state and interactions to an MCP client. It captures console logs, network requests, DOM information, and lets the client click, fill, inspect, and otherwise drive the page over WebSocket/stdio.
From the registry: Debug bridge inside your web app: an agent reads the DOM, console and network. Any browser.
This server lives in a monorepo. The README covers the whole collection, so we can't extract a single canonical install. This repository contains multiple Feedthrough packages/adapters (@feedthrough/core, @feedthrough/mcp, framework integrations, and test adapters). The MCP server package is @feedthrough/mcp, but the README is for the overall package collection.
FEEDTHROUGH_PORTrequiredOverrides the WebSocket/MCP listening portFEEDTHROUGH_ALLOWED_HOST_SUFFIXESrequiredComma-separated allowed host suffixes for incoming browser WebSocket connectionsMCP server for Firecrawl web scraping, structured data extraction and web search integration.