TrueLayer MCP Integration for AI assistants

An experimental project connecting TrueLayer APIs and an AI assistant, like Claude AI.

This project provides a Truelayer Model Context Protocol (MCP) server that enables an AI assistant, like Claude AI, to interact with TrueLayer's financial APIs. It allows the AI assistant to perform various banking and payment operations through TrueLayer's services.

⚠️ DISCLAIMER ⚠️

This project is for demonstration purposes only. It is not officially supported or maintained by TrueLayer, does not form a part of the services we contractually provide you with and we are not responsible for the outcome of your use. Use at your own risk. This integration may break with API changes.

By using this MCP server with an external LLM you are trusting an external third party with the handling of the data retrieved from the TrueLayer API.

Features

The integration allows an AI assistant to execute some of the TrueLayer actions directly from the assistant chat.

These functions allow you to perform common payment operations like retrieving account information, creating payment links for customers, sending payouts to beneficiaries, and reviewing transaction history.

Given that AI assistants may not always produce deterministic behaviors, and for safe and isolated testing, we recommend testing the MCP server in the TrueLayer Sandbox environment.

Here are specific TrueLayer functions that an AI assistant can call for you once the MCP server is installed:

• Get merchant account details
• List transaction history
• Create payouts to external accounts
• Generate payment links for banking transactions
• Retrieve payment and payment link details

Setup

Prerequisites

• Node.js (v14 or later)
• npm or yarn
• A TrueLayer account with API credentials

Installation

1. Clone this repository:

git clone <repository-url>
cd truelayer_mcp

2. Install dependencies:

npm install

3. Configure your TrueLayer credentials:
   • Copy src/auth.example.ts to src/auth.ts
   • Fill in your TrueLayer credentials (KID, private key, client ID, client secret, and merchant account ID)

export const KID = "your-key-id"; 
export const PRIVATE_KEY_PEM = `your-private-key-in-pem-format`
export const CLIENT_ID = "your-client-id";
export const CLIENT_SECRET = "your-client-secret";
export const MERCHANT_ACCOUNT_ID = "your-merchant-account-id";

export const AUTH_URI = "https://auth.truelayer.com/connect/token";
export const BASE_URI = "https://api.truelayer.com";

4. Build the project:

npm run build

Configuration with Claude Desktop

To use this MCP server with Claude Desktop:

1. Locate your Claude Desktop configuration file:

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

2. Add the TrueLayer MCP server to your configuration:

{
  "mcpServers": {
    "truelayer": {
      "command": "node",
      "args": [
        "/path/to/truelayer_mcp/build/index.js"
      ]
    }
  }
}

Replace /path/to/truelayer_mcp with the actual path to this project on your system.

Using with Claude

Once configured, you can ask Claude to perform TrueLayer operations. Here are some example prompts:

• "Create a payout of £100 to account number 12345678 with sort code 01-02-03."
• "Generate a payment link for £50."
• "List all transactions between 2023-01-01 and 2023-01-31."

When you ask Claude about these operations, it will use the MCP server to execute them through the TrueLayer API.

Available Tools

The MCP server exposes these tools:

• truelayer-get-merchant-account: Retrieve merchant account details
• truelayer-get-payment: Get details of a specific payment
• truelayer-get-payment-link: Get details of a specific payment link
• truelayer-get-payout: Get details of a specific payout
• truelayer-create-payout: Create a new payout to an external account
• truelayer-create-payment-link: Create a payment link for bank transfers
• truelayer-list-transactions: Get a list of transactions for a merchant account (defaults to the last 30 days if no dates provided)