Can I lookup a US zip code and get its coordinates?

Yes! Use the `lookup_postcode` tool with the country 'US' and the zip code. It will return the city, state, and coordinates for that location.

Which countries are supported by Zippopotam.us?

Zippopotam.us supports over 60 countries, including the US, Canada, Great Britain, Brazil, France, Germany, and many others. You can use the standard 2-letter ISO country codes.

Can I find all zip codes for a specific city?

Yes! Use the `lookup_city` tool with the country code, state, and city name. It will return a list of all postal codes associated with that urban area.

Zippopotam.us MCP Server for OpenAI Agents SDK 2 tools — connect in under 2 minutes

Name: Zippopotam.us
Availability: InStock
Author: Vinkius

openai.github.io/openai-agents-python/mcp

Built by Vinkius GDPR 2 Tools SDK

The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect Zippopotam.us through the Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails — no manual schema definitions required.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp

async def main():
    # Your Vinkius token — get it at cloud.vinkius.com
    async with MCPServerStreamableHttp(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as mcp_server:

        agent = Agent(
            name="Zippopotam.us Assistant",
            instructions=(
                "You help users interact with Zippopotam.us. "
                "You have access to 2 tools."
            ),
            mcp_servers=[mcp_server],
        )

        result = await Runner.run(
            agent, "List all available tools from Zippopotam.us"
        )
        print(result.final_output)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Zippopotam.us MCP Server

Equip your AI agent with global geographic intelligence via the Zippopotam.us MCP server. This integration provides instant access to location data for over 60 countries. Your agent can perform reverse lookups of postal codes to retrieve city names, state details, and precise latitude/longitude coordinates. It can also find all postal codes associated with a specific city and state. Whether you are validating addresses, calculating distances, or automating logistics, your agent acts as a dedicated geographic data specialist through natural conversation.

The OpenAI Agents SDK auto-discovers all 2 tools from Zippopotam.us through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns — chain multiple agents where one queries Zippopotam.us, another analyzes results, and a third generates reports, all orchestrated through the Vinkius.

What you can do

Postal Code Lookup — Retrieve city, state, and coordinates for any zip code in 60+ countries.
City Reverse Lookup — Find all postal codes associated with a specific city and state.
Geographic Data — Access precise latitude and longitude for localized mapping or services.

The Zippopotam.us MCP Server exposes 2 tools through the Vinkius. Connect it to OpenAI Agents SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Zippopotam.us to OpenAI Agents SDK via MCP

Follow these steps to integrate the Zippopotam.us MCP Server with OpenAI Agents SDK.

Install the SDK

Run pip install openai-agents in your Python environment

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com

Run the script

Save the code above and run it: python agent.py

Explore tools

The agent will automatically discover 2 tools from Zippopotam.us

Why Use OpenAI Agents SDK with the Zippopotam.us MCP Server

OpenAI Agents SDK provides unique advantages when paired with Zippopotam.us through the Model Context Protocol.

Native MCP integration via `MCPServerSse` — pass the URL and the SDK auto-discovers all tools with full type safety

Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure

Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate

First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output

Zippopotam.us + OpenAI Agents SDK Use Cases

Practical scenarios where OpenAI Agents SDK combined with the Zippopotam.us MCP Server delivers measurable value.

Automated workflows: build agents that query Zippopotam.us, process the data, and trigger follow-up actions autonomously

Multi-agent orchestration: create specialist agents — one queries Zippopotam.us, another analyzes results, a third generates reports

Data enrichment pipelines: stream data through Zippopotam.us tools and transform it with OpenAI models in a single async loop

Customer support bots: agents query Zippopotam.us to resolve tickets, look up records, and update statuses without human intervention

Zippopotam.us MCP Tools for OpenAI Agents SDK (2)

These 2 tools become available when you connect Zippopotam.us to OpenAI Agents SDK via MCP:

lookup_nearby_city

Lookup zip codes for a city

lookup_postcode

Lookup location by postal code

Example Prompts for Zippopotam.us in OpenAI Agents SDK

Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with Zippopotam.us immediately.

"Find the city and state for zip code 90210 in the US."

"Lookup the postal code 'SW1A 1AA' in Great Britain."

"List all postal codes for 'Miami', Florida (FL)."

Troubleshooting Zippopotam.us MCP Server with OpenAI Agents SDK

Common issues when connecting Zippopotam.us to OpenAI Agents SDK through the Vinkius, and how to resolve them.

MCPServerStreamableHttp not found

Ensure you have the latest version: pip install --upgrade openai-agents

Agent not calling tools

Make sure your prompt explicitly references the task the tools can help with.

Zippopotam.us + OpenAI Agents SDK FAQ

Common questions about integrating Zippopotam.us MCP Server with OpenAI Agents SDK.

How does the OpenAI Agents SDK connect to MCP?

Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.