Fax.Plus MCP Server for LangChainGive LangChain instant access to 8 tools to Cancel Outbox Job, Get Account Info, Get Fax Details, and more
LangChain is the leading Python framework for composable LLM applications. Connect Fax.Plus through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.
Ask AI about this App Connector for LangChain
The Fax.Plus app connector for LangChain is a standout in the Communication Messaging category — giving your AI agent 8 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
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({
"faxplus": {
"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 Fax.Plus, show me what tools are available.",
}]
})
print(response["messages"][-1].content)
asyncio.run(main())
* 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 Fax.Plus MCP Server
Connect your Fax.Plus account to any AI agent and take full control of your digital telephony and fax workflows through natural conversation.
LangChain's ecosystem of 500+ components combines seamlessly with Fax.Plus through native MCP adapters. Connect 8 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 Orchestration — List and monitor all incoming and outgoing faxes and retrieve detailed status updates and delivery metadata programmatically
- Automated Sending — Programmatically send new faxes to any international number in E.164 format and add transmission comments directly through your agent
- Telephony Management — Search for and list available fax numbers across various countries and area codes to expand your business presence
- Outbox Oversight — Track active fax jobs and programmatically cancel pending transmissions before they are completed to save resources
- Account Visibility — Retrieve complete profile information, assigned numbers, and team member directories to maintain high-fidelity oversight
The Fax.Plus MCP Server exposes 8 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.
All 8 Fax.Plus tools available for LangChain
When LangChain connects to Fax.Plus through Vinkius, your AI agent gets direct access to every tool listed below — spanning digital-fax, secure-transmission, telephony, and more. Every call is secured with network, filesystem, subprocess, and code evaluation entitlements inside a sandboxed runtime. Beyond a simple connection, you get a full AI Gateway with real-time visibility into agent activity, enterprise governance, and optimized token usage.
Requires the unique outbox job ID. Cancel a pending fax job
Use this to determine the current identity and account context. Retrieve current Fax.Plus account details
Includes information about the recipient, sender, and delivery status. Get details for a specific fax
Includes the number itself and its activation status. List all assigned fax numbers
Use this to monitor communication history and obtain fax IDs. List received and sent faxes
Useful for monitoring ongoing transmissions. List active or pending fax jobs
Useful for expanding telephony infrastructure. Search for available fax numbers
Requires the recipient phone number in E.164 format and allows for optional comments. Files are typically managed via the Fax.Plus outbox logic. Send a new digital fax
Connect Fax.Plus to LangChain via MCP
Follow these steps to wire Fax.Plus into LangChain. The entire setup takes under two minutes — your credentials stay safe behind the Vinkius.
Install dependencies
pip install langchain langchain-mcp-adapters langgraph langchain-openaiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the agent
python agent.pyExplore tools
Why Use LangChain with the Fax.Plus MCP Server
LangChain provides unique advantages when paired with Fax.Plus through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine Fax.Plus 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 Fax.Plus queries for multi-turn workflows
Fax.Plus + LangChain Use Cases
Practical scenarios where LangChain combined with the Fax.Plus MCP Server delivers measurable value.
RAG with live data: combine Fax.Plus tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query Fax.Plus, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain Fax.Plus tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every Fax.Plus tool call, measure latency, and optimize your agent's performance
Example Prompts for Fax.Plus in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with Fax.Plus immediately.
"List my last 5 received faxes."
"Send a fax to +15551234567 with comment 'Urgent review required'."
"Search for available fax numbers in United Kingdom (country code: gb)."
Troubleshooting Fax.Plus MCP Server with LangChain
Common issues when connecting Fax.Plus to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersFax.Plus + LangChain FAQ
Common questions about integrating Fax.Plus MCP Server with LangChain.
How does LangChain connect to MCP servers?
langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.