How to Use the Holiday API MCP in Mastra AI

Q: Can I use the Holiday API to trigger conditional branches in Mastra AI?

Yes. Use the output of getnextworkday as a condition in your workflow. If the date falls on a holiday, the workflow can automatically shift to the next valid business day.

Build resilient payroll and logistics workflows in Mastra AI using this MCP server.

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Connect Holiday API MCP to Mastra AI

Create your Vinkius account to connect Holiday API 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 Holiday API with Mastra AI

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Reliable workday calculations

Logistics workflows break when you ignore weekends. Use `get_workdays_count` to ensure your SLA windows actually match business days across 50+ countries. This removes the manual tracking burden from your HR or logistics teams. The agent calculates the duration, and your workflow proceeds without friction.

Workflow-native holiday checks

Mastra AI agents need to know when the office is closed. Use `get_holidays` as a conditional trigger for your multi-step processes. If the tool returns a match for a specific date, branch your logic to notify the admin or delay the task. It automates the decision-making process entirely.

Safe, retriable automation

Complex operations require error handling. Since this MCP server integrates with Mastra AI, you can configure automatic retries if a network request drops. Your agent manages the state, ensuring that your holiday data remains consistent. It is built for production-grade reliability where manual errors are not acceptable.

Setup guide

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

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

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

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Common questions about Holiday API MCP in Mastra AI

Set the requireToolApproval flag in your Mastra agent config. This forces a human to review the holiday data before the agent triggers a payroll action.

Yes. Use the output of `get_next_workday` as a condition in your workflow. If the date falls on a holiday, the workflow can automatically shift to the next valid business day.

The server itself is ephemeral, but your agent maintains the state. You can pass the results through your workflow memory to keep track of previous date calculations.

We isolate every connection. Your request parameters are only used to return the specific holiday data required for your workflow execution.

It covers federal holidays by default. Check the supported countries list to see if your specific operational region is included in the dataset.

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