How to Use the Mercury MCP in Mastra AI

Q: Can Mastra AI handle complex Mercury logic?

Absolutely. You can chain tools like listcards and listtransactions to build multi-step processes that handle your entire startup's financial lifecycle.

Build complex financial workflows in Mastra AI with programmatic access to your Mercury bank accounts.

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Connect Mercury MCP to Mastra AI

Create your Vinkius account to connect Mercury to Mastra AI 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 Mercury with Mastra AI

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Perplexity

Automated reconciliation with Mastra AI

Use `list_transactions` and `list_invoices` to build agents that reconcile your books automatically. Define conditional branches to flag discrepancies for manual review. Your workflow handles the logic while the tools pull the truth from your bank. It removes the manual grind of checking every single line item.

Conditional payment recipient management

Create agents that verify `list_recipients` data before executing any logic. If a recipient isn't in your records, the agent triggers a retry or notifies you. This adds a layer of safety to your banking operations. You define the rules, and the agent uses the tools to enforce them.

Fault-tolerant banking operations

Mastra AI handles retries if a call to `get_account` or `get_balance` fails. You get a reliable way to manage treasury tasks without worrying about transient network drops. It’s designed for production environments where reliability matters. If the API hits a hiccup, the agent picks up where it left off.

Setup guide

Set up Mercury MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Mercury tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "mercury-alternative-mcp-client",
  servers: {
    "mercury-alternative-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Mercury Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Mercury tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Mercury transactions"
);
console.log(result.text);

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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 Mercury. 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.

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Common questions about Mercury MCP in Mastra AI

Pass the server URL to the MCP client configuration in your Mastra project. The framework auto-detects the tools, and you can immediately assign them to your agents.

Absolutely. You can chain tools like `list_cards` and `list_transactions` to build multi-step processes that handle your entire startup's financial lifecycle.

Yes. You can require tool approval for sensitive actions, ensuring a human verifies the agent's intent before it interacts with your bank data.

The agent maintains state through your workflow engine. It fetches fresh data using the tools whenever the logic requires a check against reality.

The connection is strictly between your environment and the bank. We handle the MCP protocol, but your financial data never touches our storage.

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