How to Use the UK Postbox MCP in OpenAI Agents SDK

Q: Can I use my OpenAI Agents SDK to list multiple parcels from UK Postbox?

Yep. You can use the listparcels tool directly through your agent. This gives you a comprehensive overview of all packages associated with your virtual mailbox via UK Postbox.

Q: What is the best way to send a letter using both UK Postbox and OpenAI Agents SDK?

You use sendletter. The agent takes the recipient's name, full address, and content as inputs. Since this action involves physical mail, the built-in safety constraints of your setup are really useful.

Q: Does the OpenAI Agents SDK support tracking status updates for UK Postbox?

Absolutely. You use getmailitem or listmailitems. Your agent pulls the latest data points from the MCP Server, letting you know exactly what's going on with your mail.

Q: If I need to change my forwarding address via UK Postbox and OpenAI Agents SDK, how do I proceed?

You simply call forwardmail after using listaddresses. The agent handles the flow, making sure that your new instructions are correctly recorded on the MCP Server.

Manage physical mail processes with OpenAI Agents SDK.

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Connect UK Postbox MCP to OpenAI Agents SDK

Create your Vinkius account to connect UK Postbox to OpenAI Agents 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 UK Postbox with OpenAI Agents SDK

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Process Correspondence Workflows

Your agent can manage a full correspondence cycle. First, you use `list_mail_items` to see what's waiting. Then, if needed, it calls `request_scan`, and finally, the workflow concludes by executing `send_letter`. This sequence keeps everything traceable within your specialized agents.

Track Specific Mail Items

Need details on one package? Use `get_mail_item` to pull specific data points. You can also check if the whole service is up by calling `check_ukpostbox_status`. This level of granular checking makes it perfect for your production agent systems.

Handle Forwarding and Addresses

When a user needs to update where mail goes, the system uses `list_addresses` first. After identifying the correct address, the agent can execute `forward_mail`. Because your setup includes built-in guardrails, you know these handoffs are validated before they run.

Setup guide

Set up UK Postbox MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all UK Postbox tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives UK Postbox tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate UK Postbox tools and returns structured results. Copy the full example on the right to get started.

agent.py

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

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="UK Postbox Agent",
            instructions="You have access to UK Postbox tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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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 UK Postbox. 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 UK Postbox MCP in OpenAI Agents SDK

It manages the input and output of all tools using its guardrails. When your agent calls a tool like `get_parcel`, it validates the parameters before sending them to the MCP Server, ensuring reliable interaction with UK Postbox.

Yep. You can use the `list_parcels` tool directly through your agent. This gives you a comprehensive overview of all packages associated with your virtual mailbox via UK Postbox.

You use `send_letter`. The agent takes the recipient's name, full address, and content as inputs. Since this action involves physical mail, the built-in safety constraints of your setup are really useful.

Absolutely. You use `get_mail_item` or `list_mail_items`. Your agent pulls the latest data points from the MCP Server, letting you know exactly what's going on with your mail.

You simply call `forward_mail` after using `list_addresses`. The agent handles the flow, making sure that your new instructions are correctly recorded on the MCP Server.

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