How to Use the Zippopotam.us Alternative MCP in Vercel AI SDK

Q: How do I search with Zippopotam.us Alternative using Vercel AI SDK?

Just call mcpClient.tools() to expose the location tools. When your user inputs a zip code, the agent calls getlocationbypostalcode, and you stream the resulting city/state data immediately.

Q: Can Vercel AI SDK handle finding postal codes by city?

Yeah. You use the getpostalcodesbycity tool. It takes a state and city name, and then streams back an array of matching zip codes to your frontend for display.

Stream location data into your UI in real-time with Vercel AI SDK.

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Connect Zippopotam.us Alternative MCP to Vercel AI SDK

Create your Vinkius account to connect Zippopotam.us Alternative 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 Zippopotam.us Alternative with Vercel AI SDK

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Real-Time Geocoding Results

When you call `get_location_by_postal_code`, the results stream directly to the user interface. You don't wait for a spinner; the location data appears live as your agent client processes it. This makes building interactive tools simple. The Vercel AI SDK handles streaming those coordinates and city details right into React, Next.js, or Svelte components.

Batch Postal Code Lookups

Need to find all the zip codes for a given area? Use `get_postal_codes_by_city`. The results stream through your frontend in chunks. This allows you to show users progress as the list of postal codes is generated. It’s perfect for forms that need instant, live feedback. You pass the tool output directly into `streamText`, making the whole process feel native and instantaneous.

Client-Side Location Lookups

Your agent client uses this MCP Server to perform lookups on demand. Calling `get_location_by_postal_code` provides coordinates, city names, and state information right when the user needs it. Because the data streams directly into your UI, you can make complex geocoding flows feel snappy and reliable for the end-user.

Setup guide

Set up Zippopotam.us Alternative 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 Zippopotam.us Alternative 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 Zippopotam.us Alternative 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 Zippopotam.us. 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 Zippopotam.us Alternative MCP in Vercel AI SDK

Just call `mcpClient.tools()` to expose the location tools. When your user inputs a zip code, the agent calls `get_location_by_postal_code`, and you stream the resulting city/state data immediately.

Yeah. You use the `get_postal_codes_by_city` tool. It takes a state and city name, and then streams back an array of matching zip codes to your frontend for display.

The server handles location metadata like postal codes, city names, and geographic coordinates (latitude/longitude). Your agent client only sees the resulting strings.

Absolutely. You can chain calls—first find all zip codes by city, then use one of those specific zips to get detailed location data.

The server touches public geo-spatial data: postal codes, city names, and coordinates. Since you're streaming this into the UI, make sure your user never inputs sensitive addresses.

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