Bring Saas Billing
to LangChain
Create your Vinkius account to connect Younium to LangChain and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
Compatible with every major AI agent and IDE
What is the Younium MCP Server?
Connect your Younium account to any AI agent and manage your B2B subscription infrastructure through natural conversation.
What you can do
- Subscription Lifecycle — List all recurring billing subscriptions, retrieve historical versions, and create new subscription records directly from your agent
- Account Management — Browse your enterprise SaaS customer base, retrieve deep details including tax IDs, and provision new billing accounts
- Financial Metrics — Retrieve real-time MRR (Monthly Recurring Revenue), ARR, and TCV metrics for specific customer contracts
- Invoice Auditing — List and monitor all generated invoices and track their payment statuses (DRAFT, POSTED, PAID) across your account
- Product Discovery — Browse your billable product catalog and associated charge plans to understand your pricing inventory
- Churn Control — Immediately terminate specific subscription versions and manage contract effective dates through simple chat commands
- Deep Discovery — Quickly find unique account, subscription, and version IDs required for automated billing workflows
How it works
- Subscribe to this server
- Enter your Younium JWT Token
- Start managing your B2B subscriptions through Claude, Cursor, or any MCP-compatible client
No more manual navigation through complex ERP dashboards to check a subscription status. Your AI agent becomes your billing operations coordinator.
Who is this for?
- Finance Operations — monitor MRR/ARR metrics and reconcile daily invoices through simple chat commands
- Sales & Success Teams — quickly verify customer subscription statuses and contract versions before renewal meetings
- Accounting Teams — audit account details and track payment statuses across the entire customer base
- Product Managers — browse the billable product catalog and verify charge plan configurations without manual navigation
Built-in capabilities (10)
Provide the subscription and version IDs plus the effective date. Immediately terminates a specific subscription version
Provide the account configuration as a JSON object. Creates a new customer billing account record
Provide subscription details as a JSON object. Creates a new subscription for an existing account
Retrieves comprehensive details for a specific Younium account
Retrieves MRR, ARR, and TCV metrics for a specific subscription
Retrieves details for a specific subscription, including historical versions
Lists all customer accounts registered in the Younium ERP
Lists all invoices generated by Younium
Lists all products available in the Younium product catalog
Lists all recurring billing subscriptions in the account
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Younium 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.
- —
The largest ecosystem of integrations, chains, and agents. combine Younium 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 Younium queries for multi-turn workflows
Younium in LangChain
Why run Younium with Vinkius?
The Younium connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.

* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.




Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Younium using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Younium and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Younium to LangChain through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Younium for LangChain
Every request between LangChain and Younium is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Can I check the MRR and ARR metrics for a specific customer contract?
Yes. The get_contract_metrics tool allows your AI agent to retrieve real-time Monthly Recurring Revenue (MRR), Annual Recurring Revenue (ARR), and Total Contract Value (TCV) for any specific subscription ID.
How do I see if a customer's latest invoice has been paid?
You can use the list_invoices tool. Your AI agent will return a list of recent invoices along with their current status, such as 'DRAFT', 'POSTED', or 'PAID', helping you audit financial activity through chat.
Is it possible to terminate a subscription via conversation?
Absolutely. Using the cancel_subscription_version tool, you can instruct your agent to terminate a specific subscription. You'll need to provide the subscription and version IDs plus the effective cancellation date.
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.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters
Explore More MCP Servers
View all →
Worksuite
9 toolsFreelancer management and global contractor onboarding via Worksuite directly through AI.

Apex & Division Stats by TRN
9 toolsDeep gaming analytics — player profiles, per-legend breakdowns, match history, and global leaderboards for Apex Legends and Division 2 via AI.

Unpaywall (Open Access Papers)
1 toolsAccess millions of open-access scholarly articles. Check OA status and retrieve full-text PDF links using DOIs.

TOML Parser Engine
1 toolsConvert TOML config files to JSON and back. Essential for Rust (Cargo.toml), Python (pyproject.toml), and Cloudflare (wrangler.toml).
