How to Use the Billit MCP in LangChain

Build multi-step accounting chains in LangChain by linking Billit invoice actions directly into your autonomous reasoning pipelines.

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Connect Billit MCP to LangChain

Create your Vinkius account to connect Billit to LangChain and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Billit with LangChain

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Automate invoice generation in LangChain

Trigger `create_invoice` within your agentic chain to turn natural language requests into formal billing records. Your agent handles the logic of data extraction before hitting the endpoint. This setup removes manual entry from your pipeline. You define the sequence, and the tools handle the API communication.

Sync Billit data with LangChain chains

Feed the output of `list_invoices` or `list_parties` into subsequent chain links for automated reporting. The agent processes these lists as raw data inputs. Tracing your execution in LangSmith shows exactly how the model parses these lists. It turns unstructured requests into structured Billit API calls.

Manage company records via LangChain

Access `get_company_info` to provide your agent with context about your own business settings. This keeps your automated agents informed during complex financial workflows. Context remains consistent across your chain. Your agent uses this identity data to ensure every invoice it creates carries the correct business credentials.

Setup guide

Set up Billit MCP in LangChain

Prerequisites

Python 3.10+ installed
langchain-mcp-adapters + langgraph packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install langchain-mcp-adapters langgraph langchain-openai. The MCP adapters package converts MCP tools into native LangChain BaseTool objects.
2

Connect via HTTP transport
Use MultiServerMCPClient with "transport": "http" pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create a ReAct agent
Pass the discovered tools to create_react_agent() from LangGraph. The agent automatically routes Billit tool calls through the MCP protocol.
4

Run with any LLM
Swap ChatOpenAI for ChatAnthropic, ChatGoogleGenerativeAI, or any LangChain-compatible model. The MCP tools work identically across all providers.

agent.py

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

async with MultiServerMCPClient({
    "billit-mcp": {
        "transport": "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,
    )
    result = await agent.ainvoke({
        "messages": "List recent Billit transactions"
    })
    print(result["messages"][-1].content)

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Billit. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

Why Choose Vinkius

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Common questions about Billit MCP in LangChain

Install the MCP adapters and point the client to your Vinkius endpoint URL. You then pass the tools list directly into your agent constructor to start executing.

Yes, use a session-based client to maintain state between steps. This allows your LangChain agent to remember previous tool outputs during long-running invoice tasks.

Absolutely, the client supports aggregating tools from multiple endpoints. You can combine Billit with your other services inside a single orchestration layer.

LangSmith logs every input and output for your tools. You see the latency and the exact JSON payload sent to your invoices.

Vinkius handles authentication via a single endpoint token so your sensitive financial records stay local. We never store your invoice or customer details on our servers.

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