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LangChain agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free) render_screenshot

How to: LangChain agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free) render_screenshot

client:LangChain transport:streamable-http tool:render_screenshot

Add agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free) to LangChain

  1. 01

    Open pip install langchain-mcp-adapters and merge this in. Keep any servers already there.

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "agent-web": {
            "transport": "streamable_http",
            "url": "https://agent-web.foomworks.workers.dev/mcp",
        }
})

tools = await client.get_tools()
  1. 02

    Save the file and restart LangChain.

  2. 03

    Ask for something render_screenshot does. LangChain lists the server's tools on connect and calls render_screenshot itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free)'s identifier in your config matches the one above exactly.

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.