How to Use the Holiday API MCP in Vercel AI SDK

Stream real-time holiday data directly into your Vercel AI SDK frontends using this MCP server.

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Connect Holiday API MCP to Vercel AI SDK

Create your Vinkius account to connect Holiday API to Vercel AI SDK 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 Vercel AI SDK

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Perplexity

Live calendar data in your UI

Your frontends need accurate dates, not static guesses. Use `get_holidays` to push localized event data straight into your components the moment your agent grabs it. Since you are using Vercel AI SDK, this data streams. The user watches the dates populate in real-time without seeing a stuck loading spinner.

Automated schedule logic

Stop hardcoding date math into your edge functions. Use `get_next_workday` to calculate delivery timelines or payroll deadlines dynamically. Your TypeScript code handles the dates while the MCP server manages the heavy lifting. It keeps your business logic clean and your edge deployments lean.

Localized date support

Global apps require global context. Use `list_supported_countries` and `list_supported_languages` to verify coverage before your agent attempts a query. This avoids runtime errors when users request regions outside your scope. You verify the capability first, then execute the request with total confidence.

Setup guide

Set up Holiday API MCP in Vercel AI SDK

Prerequisites

Node.js 18+ and a TypeScript project
ai + @modelcontextprotocol/sdk packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies

Run npm install ai @modelcontextprotocol/sdk plus your preferred model provider (e.g. @ai-sdk/openai).
2

Create the Streamable HTTP transport

Use StreamableHTTPClientTransport with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and use tools

Call mcpClient.tools() to auto-discover all Holiday API tools. Pass them directly to generateText() or streamText() — no manual schema definitions needed.
4

Works with any model provider

Swap openai("gpt-4o") for any AI SDK provider — Anthropic, Google, Mistral. The MCP tools work identically across all supported models.

index.ts

import { experimental_createMCPClient as createMCPClient } from "ai";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";

const transport = new StreamableHTTPClientTransport(
  new URL("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
);

const mcpClient = await createMCPClient({ transport });
const tools = await mcpClient.tools();

const { text } = await generateText({
  model: openai("gpt-4o"),
  tools,
  prompt: "List recent Holiday API transactions",
});

console.log(text);
await mcpClient.close();

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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 Holiday API. 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 Holiday API MCP in Vercel AI SDK

Install the MCP packages and instantiate the client using the provided HTTP URL. Pass the tools directly into your streamText call to let your agent handle the scheduling logic.

Yes, but keep an eye on your execution time. Since this MCP server runs in the V8 isolate sandbox, it responds fast enough for most interactive UI needs.

Yes. Check the supported languages first. You can pass the language code to the tools to ensure the output matches your user's locale.

Your queries stay within the isolated session. We only process the country codes and date ranges you send to determine the holiday status.

The MCP server returns a standard error object. Catch this in your tool execution logic to show a graceful fallback message to your user.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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