How to Use the CTA MCP in Vercel AI SDK

Stream live Chicago transit data into your Vercel AI SDK applications with this MCP Server.

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Connect CTA MCP to Vercel AI SDK

Create your Vinkius account to connect CTA 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 CTA with Vercel AI SDK

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Real-time transit tracking for AI-SDK

Feed live bus and train locations directly into your frontend components. Use `get_bus_vehicles` and `get_train_positions` to push dynamic transit updates to your users without waiting for a server-side refresh. Your interface will reflect current fleet movement the moment the data hits the wire. This MCP Server ensures your application stays in sync with the actual CTA grid.

Instant arrival predictions in Vercel AI SDK

Display accurate countdowns for commuters by hooking into `get_bus_predictions` and `get_train_arrivals`. Your UI components can now show exactly when the next vehicle hits the stop. Stop guessing arrival times and pull the data straight from the source. It gives your users a clear, live view of their commute status.

System health monitoring via Vercel AI SDK

Keep your users informed about delays or maintenance issues using `get_route_status` and `get_service_alerts`. These tools provide the necessary context to warn users before they head to the station. Integrate these checks into your error handling or status dashboards. It keeps your transit app transparent and reliable.

Setup guide

Set up CTA 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 CTA 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 CTA transactions",
});

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

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by CTA. 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.

Why Choose Vinkius

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Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

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Common questions about CTA MCP in Vercel AI SDK

Install the necessary packages via npm and initialize the client using the provided URL. Once set up, call the tools directly within your generateText or streamText functions to start fetching transit data.

Yes, you can stream vehicle coordinates to your frontend to plot bus and train positions in real-time. The server returns latitude and longitude data through its tracking tools.

It is built for that exact purpose. The tool results flow through your streams, allowing your UI to update as soon as the data arrives from the CTA API.

You get access to arrival predictions, vehicle tracking, route status, and service alerts. It covers both the L train lines and the entire bus network.

Your queries only pass through the Vinkius infrastructure to fetch public transit information. We do not store your specific search history or personal route preferences.

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