Download PDFMarkdown Version
ClaudeChatGPTPerplexityGeminiMicrosoft CopilotRaycastMeta AIGrokZ.aiQwenKimi
DeepSeekMistralCursorVS CodeWindsurfJetBrainsClineLovableVercel AI SDKLangChain

Use USPS Web Tools with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Manage US mail. audit addresses, tracking, and ZIP codes via AI.

Included with plan

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 8 capabilities

The complete USPS Web Tools capability set.

These are the exact actions your AI can choose when you ask it to work with USPS Web Tools.

Capability set01 / 02

01-04

4 capabilities in this set.

Part of 8 available through USPS Web Tools.

  1. 01

    Calculate domestic rate

    Calculate USPS domestic shipping rates

  2. 02

    Calculate international rate

    Calculate USPS international shipping rates

  3. 03

    Get delivery commitments

    Get USPS service delivery commitments and estimates

  4. 04

    Lookup usps city state

    Look up the city and state for a ZIP code

Capability set02 / 02

05-08

4 capabilities in this set.

Part of 8 available through USPS Web Tools.

  1. 05

    Lookup usps zip code

    Look up the exact ZIP code for a specific US address

  2. 06

    Track usps package

    Track a USPS package using a tracking number

  3. 07

    Track usps package advanced

    Get advanced tracking information for a USPS package

  4. 08

    Verify usps address

    Verify and standardize a US address using USPS Web Capabilities

Observed, not estimated

866ms average. Fast in production.

USPS Web Tools is checked daily against the live service.

Daily averagePeak 1079ms
Aug 20Today
Fastest day
735ms
Slowest day
1079ms
14-day trend
Slowing+6%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 8 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of USPS Web Tools, so you can see the experience inside your AI.

It does not authenticate your account with USPS Web Tools. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

USPS Web Tools Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_R7DQnUcS3k7mzjKxMrsMbzxWu6CJTEhHjGrbKAVt/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — USPS Web Tools capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "usps-developer-portal-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_R7DQnUcS3k7mzjKxMrsMbzxWu6CJTEhHjGrbKAVt/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

FAQ

Questions USPS Web Tools owners ask.

  • 01

    How do I find my USPS User ID?

    Register for an account at the USPS Web Capabilities registration page. You will receive your User ID via email. Copy and paste it below.

  • 02

    Does it support international tracking?

    Yes. The track_usps_package capability supports tracking for any valid USPS tracking number, including international shipments originating from or delivered by USPS.

  • 03

    What is the format for address verification?

    The API requires an object with line1, city, and state metadata. Standardizing these inputs ensures the most accurate verification from the USPS database.

Explore

More in Industry Titans

Suggestions