Can I check which subscription plan a customer is currently on?

Yes! Use the `get_customer_subscriptions` tool with the Customer Unique ID. It will fetch all active and inactive plans for that user.

Does the integration allow me to cancel a subscription?

Currently, the toolset focuses on querying and management functions (listing customers, checking invoices). Canceling or modifying subscription billing dates must be done on the Billsby platform.

Can I list all available subscription plans?

Yes. Use the `list_plans` tool to retrieve all subscription plans configured in your Billsby account, including their pricing and cycles.

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

Name: Billsby
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 Billsby 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({
        "billsby": {
            "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 Billsby, 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 Billsby MCP Server

Connect your Billsby account to any AI agent and orchestrate your subscription billing workflows through natural conversation.

LangChain's ecosystem of 500+ components combines seamlessly with Billsby 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

Customer Management — List, retrieve, and create customer profiles within your billing system.
Subscription Oversight — Query and manage subscriptions, plans, and add-ons linked to your customers.
Invoicing Audits — Access recent invoices and their payment statuses to ensure steady cash flow.
Product Catalog — Retrieve available products and their pricing structures from Billsby.

The Billsby 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 Billsby to LangChain via MCP

Follow these steps to integrate the Billsby 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 Billsby via MCP

Why Use LangChain with the Billsby MCP Server

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

The largest ecosystem of integrations, chains, and agents. combine Billsby 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 Billsby queries for multi-turn workflows

Billsby + LangChain Use Cases

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

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

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

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

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

Billsby MCP Tools for LangChain (10)

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

create_customer

Create a new customer

get_customer

Get specific customer details

get_customer_subscriptions

List subscriptions for a specific customer

get_subscription

Get specific subscription details

list_addons

List available add-ons

list_customers

List all customers

list_invoices

List recent invoices

list_plans

List all subscription plans

list_products

List all products

list_subscriptions

List all subscriptions

Example Prompts for Billsby in LangChain

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

"List all our active customers."

"Show subscriptions for customer c_1."

"List all available subscription plans."

Troubleshooting Billsby MCP Server with LangChain

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

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Billsby + LangChain FAQ

Common questions about integrating Billsby 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.