USPS Developer Portal MCP Server for OpenAI Agents SDK 8 tools — connect in under 2 minutes
The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect USPS Developer Portal through the Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails — no manual schema definitions required.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
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="USPS Developer Portal Assistant",
instructions=(
"You help users interact with USPS Developer Portal. "
"You have access to 8 tools."
),
mcp_servers=[mcp_server],
)
result = await Runner.run(
agent, "List all available tools from USPS Developer Portal"
)
print(result.final_output)
asyncio.run(main())
* 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 USPS Developer Portal MCP Server
Empower your AI agent to orchestrate your entire postal logistics and address auditing workflow with the USPS Developer Portal, the official source for United States Postal Service data. By connecting USPS Web Tools to your agent, you transform complex shipping tasks into a natural conversation. Your agent can instantly verify addresses, audit package tracking statuses, and retrieve ZIP code metadata without you ever touching a shipping portal. Whether you are managing e-commerce deliveries or conducting regional address audits, your agent acts as a real-time logistics consultant, ensuring your data is always verified and precise.
The OpenAI Agents SDK auto-discovers all 8 tools from USPS Developer Portal through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns — chain multiple agents where one queries USPS Developer Portal, another analyzes results, and a third generates reports, all orchestrated through the Vinkius.
What you can do
- Address Auditing — Standardize and verify United States addresses to ensure your shipping metadata is always grounded in official USPS records.
- Advanced Tracking Control — Track real-time package statuses and access granular facility-level tracking events instantly.
- ZIP Code & Routing Discovery — Cross-reference ZIP codes with city/state pairs to understand the geographic reach of your logistics.
- Domestic & International Rates — Accurately calculate the real-time cost of shipping across various mail classes, weights, and global destinations.
- Service Delays & Commitments — Query live delivery commitments by mail class to accurately orchestrate e-commerce fulfillment.
The USPS Developer Portal MCP Server exposes 8 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 USPS Developer Portal to OpenAI Agents SDK via MCP
Follow these steps to integrate the USPS Developer Portal 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 8 tools from USPS Developer Portal
Why Use OpenAI Agents SDK with the USPS Developer Portal MCP Server
OpenAI Agents SDK provides unique advantages when paired with USPS Developer Portal 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
USPS Developer Portal + OpenAI Agents SDK Use Cases
Practical scenarios where OpenAI Agents SDK combined with the USPS Developer Portal MCP Server delivers measurable value.
Automated workflows: build agents that query USPS Developer Portal, process the data, and trigger follow-up actions autonomously
Multi-agent orchestration: create specialist agents — one queries USPS Developer Portal, another analyzes results, a third generates reports
Data enrichment pipelines: stream data through USPS Developer Portal tools and transform it with OpenAI models in a single async loop
Customer support bots: agents query USPS Developer Portal to resolve tickets, look up records, and update statuses without human intervention
USPS Developer Portal MCP Tools for OpenAI Agents SDK (8)
These 8 tools become available when you connect USPS Developer Portal to OpenAI Agents SDK via MCP:
calculate_domestic_rate
Calculate USPS domestic shipping rates
calculate_international_rate
Calculate USPS international shipping rates
get_delivery_commitments
Get USPS service delivery commitments and estimates
lookup_usps_city_state
Look up the city and state for a ZIP code
lookup_usps_zip_code
Look up the exact ZIP code for a specific US address
track_usps_package
Track a USPS package using a tracking number
track_usps_package_advanced
Get advanced tracking information for a USPS package
verify_usps_address
Verify and standardize a US address using USPS Web Tools
Example Prompts for USPS Developer Portal in OpenAI Agents SDK
Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with USPS Developer Portal immediately.
"Verify address '1600 Pennsylvania Avenue NW, Washington, DC 20500' using USPS."
"Track my package with tracking number '9400100000000000000000'."
"Lookup ZIP code for 'Seattle, WA'."
Troubleshooting USPS Developer Portal MCP Server with OpenAI Agents SDK
Common issues when connecting USPS Developer Portal to OpenAI Agents SDK through the Vinkius, and how to resolve them.
MCPServerStreamableHttp not found
pip install --upgrade openai-agentsAgent not calling tools
USPS Developer Portal + OpenAI Agents SDK FAQ
Common questions about integrating USPS Developer Portal MCP Server with OpenAI Agents SDK.
How does the OpenAI Agents SDK connect to MCP?
MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.Can I use multiple MCP servers in one agent?
MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.Does the SDK support streaming responses?
Connect USPS Developer Portal with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect USPS Developer Portal to OpenAI Agents SDK
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.