Bring Business Banking
to LangChain
Create your Vinkius account to connect Mercury 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.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Mercury MCP Server?
Connect your Mercury business banking account to your AI agent and manage your startup finances conversationally.
What you can do
- Account Balances — Check real-time balances across all your Mercury accounts instantly from your AI agent.
- Transaction History — Pull recent transactions filtered by date, amount, or counterparty to track spending patterns.
- Recipient Management — List, create, and manage payment recipients for ACH and wire transfers.
- Account Details — Retrieve routing numbers, account numbers, and account metadata programmatically.
How it works
- Subscribe to the Mercury integration on the marketplace.
- Generate an API token from your Mercury dashboard (Settings → API Tokens).
- Ask your AI agent to check balances, pull transactions, or manage recipients.
Who is this for?
- Startup Founders — Get an instant snapshot of your runway and cash position during investor calls without switching to a browser.
- Finance & Operations Teams — Automate daily balance checks and transaction reconciliation directly from your development environment.
- Bookkeepers & CFOs — Monitor cash flow and payment activity across multiple Mercury accounts from a single conversational interface.
Built-in capabilities (10)
Required for sending payments. Create a new payment recipient
Get bank account details
Get transaction details
Get treasury balance overview
List all Mercury bank accounts
List sent payments
List payment recipients
List bank statements
List all team members
List recent transactions
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Mercury 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 Mercury 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
- —
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 Mercury queries for multi-turn workflows
Mercury in LangChain
Why run Mercury with Vinkius?
The Mercury 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 Mercury using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Mercury and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Mercury 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
Mercury for LangChain
Every request between LangChain and Mercury 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 get my Mercury API token?
Log in to your Mercury account at app.mercury.com. Go to Settings → API Tokens and click Create Token. Choose the token type (Read Only for balance checks, or Read and Write for managing recipients). Copy the token immediately — it will only be shown once. Paste it into the configuration field below, and you're ready. No code, no SDK, no webhooks.
Can my AI agent check my startup's runway instantly during a board meeting?
Absolutely. Just ask your AI agent 'What's my current balance across all Mercury accounts?' and it returns real-time balances for every account — checking, savings, and treasury — in seconds. No tab-switching, no logging in, no waiting for the dashboard to load.
What if I need to review recent transactions for month-end close?
Ask your AI agent to pull transactions from any date range. It retrieves each transaction with amount, counterparty, status, and date — perfect for reconciliation. You can filter by account, ask for Wire vs ACH breakdowns, or request only transactions above a specific threshold, all without exporting CSVs.
Is this suitable for companies with multiple Mercury accounts?
Yes. The integration retrieves data across all accounts linked to your API token — operating accounts, savings accounts, and treasury balances. Perfect for venture-backed startups managing multiple entities, holding companies, or finance teams tracking cash positions across subsidiaries.
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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