How do I get a Documo (mFax) API Key?

Log in to your Documo/mFax portal, navigate to **Settings > API**, and you can generate or retrieve your unique API Key from there. Ensure you have the necessary plan permissions.

Can the agent send new faxes?

This integration currently focuses on listing and auditing faxes, numbers, and users. Sending new faxes with attachments should be managed via the Documo web portal or print driver.

Does it support HIPAA compliant faxing?

Documo/mFax is built for security and compliance (including HIPAA). This integration uses official API protocols to access your secure transmission data.

Documo MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: Documo
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 10 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect Documo through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "documo": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using Documo, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Documo MCP Server

Integrate Documo, the next-generation digital fax and document workflow platform (mFax), directly into your AI workflow. Manage your inbound and outbound faxes, track assigned fax numbers, monitor transmission logs and delivery receipts, and oversee user access using natural language.

LangChain's ecosystem of 500+ components combines seamlessly with Documo through native MCP adapters. Connect 10 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

Fax Oversight — List and retrieve detailed information and delivery status for all your digital fax transmissions.
Line Management — Access and monitor all fax numbers assigned to your Documo account and their associated users.
Transmission Intelligence — Monitor real-time transmission logs, page counts, and secure delivery receipts via chat.
User Auditing — List and retrieve profile information for all users registered in your Documo organization.

The Documo MCP Server exposes 10 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Documo to LangChain via MCP

Follow these steps to integrate the Documo MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 10 tools from Documo via MCP

Why Use LangChain with the Documo MCP Server

LangChain provides unique advantages when paired with Documo through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine Documo MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across Documo queries for multi-turn workflows

Documo + LangChain Use Cases

Practical scenarios where LangChain combined with the Documo MCP Server delivers measurable value.

RAG with live data: combine Documo tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Documo, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Documo tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Documo tool call, measure latency, and optimize your agent's performance

Documo MCP Tools for LangChain (10)

These 10 tools become available when you connect Documo to LangChain via MCP:

get_documo_account_metadata

Retrieve metadata and usage limits for your Documo account

get_fax_details

Get detailed information and status for a specific fax

list_assigned_fax_numbers

List all fax numbers assigned to your Documo account

list_digital_faxes

List all digital faxes in your Documo/mFax account

list_documo_users

List all users registered in your Documo organization

list_failed_fax_deliveries

Identify faxes that failed to transmit correctly (mock logic)

list_latest_fax_transmissions

Identify the most recently sent or received faxes

list_received_digital_faxes

Identify faxes that have been received by your organization

quick_fax_volume_audit

Retrieve a high-level summary of fax transmissions and success rates

search_faxes_by_recipient

Search for faxes matching a recipient number or identifier

Example Prompts for Documo in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Documo immediately.

"List the most recently sent faxes."

"Show me all fax numbers assigned to our account."

"Check the status of fax 'FAX-9988'."

Troubleshooting Documo MCP Server with LangChain

Common issues when connecting Documo to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Documo + LangChain FAQ

Common questions about integrating Documo MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.