How to Use the EasyPost MCP in Vercel AI SDK

Stream EasyPost shipment data directly into your Vercel AI SDK frontends for real-time tracking updates.

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Connect EasyPost MCP to Vercel AI SDK

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

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Live shipment monitoring in Vercel AI SDK

Feed your UI live tracking data without the lag. Use `get_tracking_details` to push status updates straight into your React or Next.js components. Your users see the package status update as the AI receives it. Stop making them wait for a loading spinner when you can stream the payload directly.

Automated carrier account checks

Keep your shipping operations visible within your app dashboard. Trigger `list_carrier_accounts` to show connected providers like UPS or FedEx in real-time. Everything stays synced with your backend state. You display exactly what the API reports, keeping the data flow clean and responsive.

Instant shipment history retrieval

Pull your latest logs into your interface with `list_latest_shipments`. It connects your database state to your frontend view instantly. This keeps your users informed on recent volume without manual refreshes. Just call the tool and let your app handle the render.

Setup guide

Set up EasyPost 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 EasyPost 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 EasyPost 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 EasyPost. 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

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

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Common questions about EasyPost MCP in Vercel AI SDK

Install the necessary MCP packages and initialize the client using your endpoint. You then pass the tool definitions directly into your generateText calls. Check the logs if the handshake fails.

Yes. The streaming capabilities allow you to pipe the results from `get_tracking_details` straight to your frontend. It makes the shipment status feel immediate.

It does. Ensure your auth token is handled securely on the server side. Don't expose your API keys to the browser.

The server only touches your account metadata and shipment tracking numbers. It acts as a bridge for the specific tools you invoke. Your raw customer addresses stay within your defined security boundaries.

Always log the tool input and output objects. If you see a mismatch, check the API response schema against your expected types. Stop guessing and look at the raw JSON.

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