Bring Card Issuance
to LangChain
Create your Vinkius account to connect Highnote to LangChain and start using all 11 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.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Highnote MCP Server?
Connect your Highnote card platform to any AI agent and take full control of your card issuance, financial accounts, and ledger through natural conversation.
What you can do
- Account Holder Oversight — List and retrieve details for individuals and businesses holding accounts in your program.
- Card Management — List virtual and physical cards, monitor their operational status, and freeze or close them directly from the chat.
- Financial Account Monitoring — Access real-time balances and metadata for all your financial ledger accounts.
- Transaction Tracking — List and inspect recent spending and processing transactions with detailed merchant metadata.
- Ledger Insights — Retrieve individual ledger entries for reconciliation and audit purposes.
- Program Visibility — List all available card products and programs configured in your Highnote account.
How it works
- Subscribe to this server
- Enter your Highnote API Key and select your Environment (Test or Live)
- Start managing your fintech program from Claude, Cursor, or any MCP-compatible client
No more manual querying of complex GraphQL schemas for simple account lookups. Your AI assistant acts as a dedicated Fintech Operations Lead or Card Program Manager.
Who is this for?
- Fintech Operations Managers — instantly retrieve account balances and transaction details during reconciliation.
- Customer Support for Neobanks — check card statuses and freeze cards immediately upon customer request.
- Product Managers — monitor card issuance volume and program activity in real-time.
Built-in capabilities (11)
Retrieve information about the authenticated API user
Get detailed balance and metadata for a specific financial account
Get detailed information for a specific card
Get detailed metadata for a specific transaction
Use this to find the unique ID for a person or business. List individuals and businesses who hold accounts in Highnote
List the different card programs (e.g., Consumer, Fleet) available in your Highnote account
List all financial accounts and their current balances
List recent spending and processing transactions
Useful for reconciliation. List individual ledger entries for a financial account
Monitor card status and expiration details. List virtual and physical cards issued in your program
Valid statuses: ACTIVE, FROZEN, CLOSED. Change the status of a card (e.g., ACTIVE, FROZEN, CLOSED)
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Highnote through native MCP adapters. Connect 11 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.
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The largest ecosystem of integrations, chains, and agents. combine Highnote MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
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LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across Highnote queries for multi-turn workflows
Highnote in LangChain
Why run Highnote with Vinkius?
The Highnote 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 11 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 Highnote using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Highnote and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Highnote 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
Highnote for LangChain
Every request between LangChain and Highnote 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
How do I find my Highnote API Key?
Log in to your Highnote dashboard, navigate to Settings > API, and you will be able to generate and copy your API key. Make sure to distinguish between Test and Live keys based on your environment.
What environments are supported?
The integration supports both the Test (Sandbox) and Live (Production) environments. You must specify which one you are connecting to during setup to ensure the correct API endpoints are used.
Can I freeze a card through this integration?
Yes! Use the update_card_status tool and set the status to FROZEN. This will immediately prevent any new authorizations on that card. You can set it back to ACTIVE to unfreeze it.
Is the integration secure for financial data?
Absolutely. The integration uses industry-standard Basic Authentication over HTTPS. Your credentials and financial data are encrypted and stored securely within the Vinkius Cloud infrastructure.
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
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