Setu UPI Deeplinks MCP Server

A Model Context Protocol (MCP) server that helps Claude generate and manage UPI payment deeplinks using Setu's payment infrastructure.

Components

Tools

The server implements the following payment management tools:

1. create-payment-link: Create a new UPI payment link

   • Required inputs:
     • amount: Amount to be paid in paise
     • bill_id: Unique identifier for the payment
     • payee_name: Name of the payee
   • Optional input:
     • note: Transaction note
   • Returns payment link details including UPI ID and short URL

2. expire-payment: Expire an existing payment link

   • Required input:
     • bill_id: The bill ID of the payment to expire

3. initiate-refund: Initiate a refund for a payment

   • Required inputs:
     • bill_id: The bill ID of the payment
     • refund_type: Type of refund ("FULL" or "PARTIAL")

4. check-payment-status: Check the status of a payment

   • Required input:
     • bill_id: The bill ID of the payment
   • Returns current payment status

5. mock-payment: Simulate a payment (sandbox mode only)

   • Required inputs:
     • bill_id: The bill ID of the payment
     • upi_id: The UPI ID for the payee
     • amount: Amount to be paid in Rupees

Configuration

Environment Variables

The server requires the following environment variables:

UPI_DEEPLINKS_SCHEME_ID=your-scheme-id
UPI_DEEPLINKS_SECRET=your-secret
UPI_DEEPLINKS_PRODUCT_INSTANCE_ID=your-product-instance-id
SETU_AUTH_TYPE=OAUTH  # Optional, defaults to OAUTH
SETU_MODE=SANDBOX     # Optional, defaults to SANDBOX

Claude Desktop Configuration

MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json
Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "setu_mcp_upi_deeplinks": {
      "command": "uvx",
      "args": [
        "setu_mcp_upi_deeplinks"
      ],
      "env": {
        "UPI_DEEPLINKS_SCHEME_ID": "your-scheme-id",
        "UPI_DEEPLINKS_SECRET": "your-secret",
        "UPI_DEEPLINKS_PRODUCT_INSTANCE_ID": "your-product-instance-id"
      }
    }
  }
}

Development

Building and Publishing

1. Sync dependencies and update lockfile:

uv sync

1. Build package distributions:

uv build

1. Publish to PyPI:

uv publish

Note: Set PyPI credentials via environment variables or command flags:

• Token: --token or UV_PUBLISH_TOKEN
• Or username/password: --username/UV_PUBLISH_USERNAME and --password/UV_PUBLISH_PASSWORD

Debugging

Since MCP servers run over stdio, debugging can be challenging. For the best debugging experience, we strongly recommend using the MCP Inspector.

Launch the MCP Inspector via npm:

npx @modelcontextprotocol/inspector uv --directory /<path>/setu-mcps/upi-deeplinks run setu_mcp_upi_deeplinks

Upon launching, the Inspector will display a URL that you can access in your browser to begin debugging.