LangChain Decant: convert CSV, XLSX and PDF to JSON; web page extraction that honours robots.txt submit_request
How to: LangChain Decant: convert CSV, XLSX and PDF to JSON; web page extraction that honours robots.txt submit_request
Add Decant: convert CSV, XLSX and PDF to JSON; web page extraction that honours robots.txt to LangChain
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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({
"decant": {
"transport": "streamable_http",
"url": "https://decant.forevenza.com/mcp",
}
})
tools = await client.get_tools()
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02
Save the file and restart LangChain.
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03
Ask for something submit_request does. LangChain lists the server's tools on connect and calls submit_request itself — you do not invoke it by name.
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04
If nothing happens, check the server is running and that Decant: convert CSV, XLSX and PDF to JSON; web page extraction that honours robots.txt'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 11 November 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.