How to Use the isvat MCP in Mastra AI

Q: Does isvat support human-in-the-loop validation for Mastra AI?

You can set requireToolApproval in your client config. This forces the agent to ask for your sign-off before it runs a validation check.

Automate tax verification workflows in Mastra AI using the isvat MCP Server for reliable, conditional logic.

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Connect isvat MCP to Mastra AI

Create your Vinkius account to connect isvat 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 isvat with Mastra AI

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Conditional VAT validation logic

Build agents that react to tax status changes. If `validate_eu_vat` returns an invalid result, trigger a workflow to flag the account for manual review. This keeps your operations moving without manual intervention. Your agent follows the logic you define, handling the tax data according to your business rules.

Batch processing for complex Mastra AI workflows

When you have a long list of suppliers, use `validate_multiple_vat` to clean your data. It handles the heavy lifting so your agent can focus on the next step. This turns a slow manual task into a background process. Your pipeline stays clean and your records stay accurate.

Proactive service checks in Mastra AI

Add `check_api_status` to the start of your agent's chain. If the VIES system is offline, your agent can pause the task or retry later. It prevents wasted compute cycles. You get a smarter agent that knows when to wait and when to push forward.

Setup guide

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

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

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

Import the MCP client into your agent configuration. Once registered, the tools become available for your agent to trigger during its execution.

Mastra AI supports retry logic natively. If a tool call fails, you can configure the agent to try again after a set delay.

You can set `requireToolApproval` in your client config. This forces the agent to ask for your sign-off before it runs a validation check.

The server is designed for high-concurrency tasks. It handles requests as they come, ensuring your agent pipeline stays consistent.

Your VAT numbers are passed directly to the VIES service. We don't keep them. Security is handled via an ephemeral handshake between your agent and the server.

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