How to Use the Marqeta MCP in Mastra AI

Q: How do I register the Marqeta MCP Server inside Mastra AI?

Install @mastra/mcp and register the Vinkius endpoint URL in your Mastra client configuration. Spread the tools from listTools() directly into your agent definition to give it access to card issuing.

Q: How does Mastra AI manage transaction retries with Marqeta?

If a tool like creategpaorder fails due to network issues, Mastra AI uses its built-in exponential backoff to retry the request. This prevents partial ledger updates and keeps your balances accurate.

Build automated payment workflows with Mastra AI that issue Marqeta cards and handle transaction declines without manual code.

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Connect Marqeta MCP to Mastra AI

Create your Vinkius account to connect Marqeta 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 Marqeta with Mastra AI

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Automated Fraud Control Workflows

The `create_velocity_control` tool establishes spending limits and merchant restrictions on your card products. Mastra AI agents use this MCP Server tool to build self-healing fraud workflows, automatically adjusting controls when suspicious patterns emerge. When a transaction fails, Mastra's workflow engine catches the error, evaluates the rule set, and can execute `create_auth_control` to dynamically update permissions. This keeps your card program secure without requiring human intervention.

Multi-Step Funding with Mastra AI

The `create_program_funding_source` tool links your bank accounts to fund your card program ledger. Your Mastra AI agent chains this with `create_gpa_order` to move money automatically when ledger balances drop below a specific threshold. You configure Mastra's workflow engine to monitor balances using `get_balances` at set intervals. If a balance is low, the workflow initiates the funding chain and retries the transaction if the initial bank sweep fails.

Lifecycle Management for Cardholder Accounts

The `create_user` tool registers new cardholders in the Marqeta system. Mastra AI coordinates the entire onboarding pipeline, running `perform_kyc` immediately after user creation and handling failures with custom branching logic. If KYC verification fails, the Mastra workflow triggers `create_user_transition` to suspend the account and alerts your compliance team. This ensures no unverified users can access payment tools.

Setup guide

Set up Marqeta 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 Marqeta 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: "marqeta-mcp-client",
  servers: {
    "marqeta-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

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

const result = await agent.generate(
  "List recent Marqeta 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 Marqeta. 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 Marqeta MCP in Mastra AI

Install `@mastra/mcp` and register the Vinkius endpoint URL in your Mastra client configuration. Spread the tools from `listTools()` directly into your agent definition to give it access to card issuing.

Yes, Mastra's workflow engine excels at chaining tools. You can build a flow that runs `create_user` using our MCP Server, executes `perform_kyc`, and then calls `create_card` in sequence, handling errors at each step.

If a tool like `create_gpa_order` fails due to network issues, Mastra AI uses its built-in exponential backoff to retry the request. This prevents partial ledger updates and keeps your balances accurate.

Yes, you can configure Mastra to pause workflows before executing sensitive tools like `create_card`. The workflow waits for a manual sign-off before proceeding with the card creation process.

Vinkius executes this MCP Server inside ephemeral, zero-trust sandboxes. Your Marqeta API credentials and sensitive user KYC data pass through secure channels without persistent storage, ensuring compliance with strict financial regulations.

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