Overview

The Sophtron MCP Server implements a Model Context Protocol (MCP) gateway for securely connecting financial and utility accounts. It provides a single integration point to authorize and fetch balances and transaction history for banks, cards, and utilities. The server acts as a lightweight mediator between client applications and multiple account providers, normalizing responses and handling token/session management.

This server is useful for developers building expense tracking, accounting, or financial analytics tools who need a consolidated API for heterogeneous account types. It simplifies connection flows, unifies responses across providers, and includes safety features like webhook handling and credential tokenization so you can focus on product logic instead of provider-specific plumbing.

Features

Unified endpoints for connecting and listing accounts (bank, card, utilities)
Retrieve balances and transaction histories with normalized payloads
Token and session management for safe, resumable connections
Webhook receiver to handle asynchronous provider events (e.g., completed sync)
Extensible provider adapters — add new bank/card/utility connectors
Environment-driven configuration with optional Docker support
Logging and basic rate-limiting hooks for production readiness

Installation / Configuration

Prerequisites: Node.js (14+), npm or yarn, and a supported database (Postgres, SQLite, etc.) if persistent storage is required.

Clone and install:

git clone https://github.com/sophtron/Sophtron-Integration.git
cd Sophtron-Integration/modelcontextprotocol
npm install

Create and edit your environment variables (copy example .env if provided):

cp .env.example .env
# Edit .env to set your environment values, e.g.:
# PORT=3000
# DATABASE_URL=postgres://user:pass@localhost:5432/mcp
# JWT_SECRET=your_jwt_secret
# MCP_API_KEY=provider_integration_api_key

Start the server locally:

npm run dev        # common alias for nodemon or similar
# or
node server.js

Run with Docker (if Dockerfile / docker-compose is present):

docker build -t sophtron-mcp .
docker run -p 3000:3000 --env-file .env sophtron-mcp

Configuration tips:

Store secrets (JWT_SECRET, API keys) in a secret manager in production.
Run behind HTTPS / a reverse proxy (nginx) to protect transport-level security.
Configure a persistent datastore and Redis for session token caching to scale.

Available Resources

The server exposes a small set of REST endpoints to manage connections and fetch data. Example interface:

Method	Path	Description
POST	/mcp/connect	Start a connection flow for a provider (returns redirect / session token)
GET	/mcp/connect/:sessionId	Poll connection status or resume a paused flow
GET	/mcp/accounts	List connected accounts for a user
GET	/mcp/accounts/:accountId/balances	Get current balances for an account
GET	/mcp/accounts/:accountId/transactions?from=&to=	Retrieve transactions for an account
POST	/mcp/webhook	Generic webhook endpoint to receive provider async events

Sample connect request:

curl -X POST https://api.example.com/mcp/connect \
  -H "Authorization: Bearer <app_token>" \
  -H "Content-Type: application/json" \
  -d '{"provider":"bank_xyz","user_id":"user_123"}'

Sample transaction response (normalized):

{
  "account_id": "acc_456",
  "provider": "bank_xyz",
  "transactions": [
    {
      "id": "txn_1",
      "timestamp": "2026-04-09T13:22:00Z",
      "amount": -42.50,
      "currency": "USD",
      "description": "Coffee Shop",
      "category": "food"
    }
  ]
}

Use Cases

Expense tracking app: Use /mcp/connect to onboard bank and card accounts, then poll /transactions to categorize and display recent spending across accounts.
Accounting sync: Periodically fetch account balances and transactions to reconcile ledger entries and detect missing invoices or payments from utility or card providers.
Cash flow dashboard: Aggregate balances from multiple banks and cards to present a consolidated liquidity view for users or corporate treasuries.
Alerts and automation: Subscribe to webhooks to trigger notifications or automated workflows when a provider signals a completed sync or when an account balance drops below a threshold.

Developer Notes and Best Practices

Normalize provider-specific fields on ingest — treat amounts as numbers, provide ISO timestamps, and use consistent currency codes.
Secure webhooks: validate signatures and use replay protection (timestamps + nonce).
Implement paging for transactions and rate limiting for account-heavy operations.
Add provider adapters as modular components to keep the core server provider-agnostic.
Write integration tests that mock provider responses and webhook deliveries.

This server is designed to be a starting point for integrating diverse financial and utility providers under a single, developer-friendly protocol. Customize adapters, persistence, and security practices to match your production requirements.

Sophtron MCP Server: Bank, Card, Utilities Integration