USPS Developer Portal MCP Server for Windsurf 8 tools — connect in under 2 minutes
Windsurf brings agentic AI coding to a purpose-built IDE. Connect USPS Developer Portal through Vinkius and Cascade will auto-discover every tool. ask questions, generate code, and act on live data without leaving your editor.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
Vinkius Desktop App
The modern way to manage MCP Servers — no config files, no terminal commands. Install USPS Developer Portal and 2,500+ MCP Servers from a single visual interface.
{
"mcpServers": {
"usps-developer-portal": {
"url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
}
}
}
* 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.
Windsurf's Cascade agent chains multiple USPS Developer Portal tool calls autonomously. query data, analyze results, and generate code in a single agentic session. Paste Vinkius Edge URL, reload, and all 8 tools are immediately available. Real-time tool feedback appears inline, so you see API responses directly in your editor.
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 Windsurf 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 Windsurf via MCP
Follow these steps to integrate the USPS Developer Portal MCP Server with Windsurf.
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
Add the server
Paste the JSON configuration above into mcp_config.json
Save and reload
Windsurf will detect the new server automatically
Start using USPS Developer Portal
Open Cascade and ask: "Using USPS Developer Portal, help me...". 8 tools available
Why Use Windsurf with the USPS Developer Portal MCP Server
Windsurf provides unique advantages when paired with USPS Developer Portal through the Model Context Protocol.
Windsurf's Cascade agent autonomously chains multiple tool calls in sequence, solving complex multi-step tasks without manual intervention
Purpose-built for agentic workflows. Cascade understands context across your entire codebase and integrates MCP tools natively
JSON-based configuration means zero code changes: paste a URL, reload, and all 8 tools are immediately available
Real-time tool feedback is displayed inline, so you see API responses directly in your editor without switching contexts
USPS Developer Portal + Windsurf Use Cases
Practical scenarios where Windsurf combined with the USPS Developer Portal MCP Server delivers measurable value.
Automated code generation: ask Cascade to fetch data from USPS Developer Portal and generate models, types, or handlers based on real API responses
Live debugging: query USPS Developer Portal tools mid-session to inspect production data while debugging without leaving the editor
Documentation generation: pull schema information from USPS Developer Portal and have Cascade generate comprehensive API docs automatically
Rapid prototyping: combine USPS Developer Portal data with Cascade's code generation to scaffold entire features in minutes
USPS Developer Portal MCP Tools for Windsurf (8)
These 8 tools become available when you connect USPS Developer Portal to Windsurf 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 Windsurf
Ready-to-use prompts you can give your Windsurf 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 Windsurf
Common issues when connecting USPS Developer Portal to Windsurf through the Vinkius, and how to resolve them.
Server not connecting
USPS Developer Portal + Windsurf FAQ
Common questions about integrating USPS Developer Portal MCP Server with Windsurf.
How does Windsurf discover MCP tools?
mcp_config.json file on startup and connects to each configured server via Streamable HTTP. Tools are listed in the MCP panel and available to Cascade automatically.Can Cascade chain multiple MCP tool calls?
Does Windsurf support multiple MCP servers?
mcp_config.json. Each server's tools appear in the MCP panel and Cascade can use tools from different servers in a single flow.Connect USPS Developer Portal with your favorite client
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Connect USPS Developer Portal to Windsurf
Get your token, paste the configuration, and start using 8 tools in under 2 minutes. No API key management needed.