PayPal MCP Server

Maintained by DynamicEndpoints - Contact: [email protected]

A Model Context Protocol (MCP) server that provides integration with PayPal's APIs. This server enables seamless interaction with PayPal's payment processing, invoicing, and business management features through a standardized interface.

Architecture

graph TB
    subgraph "MCP Environment"
        Client[MCP Client]
        Server[PayPal MCP Server]
        Validation[Input Validation]
        Auth[OAuth Authentication]
    end

    subgraph "PayPal APIs"
        Orders[Orders API]
        Payments[Payments API]
        Payouts[Payouts API]
        Invoicing[Invoicing API]
        Products[Products API]
        Disputes[Disputes API]
        Identity[Identity API]
    end

    Client --> |Request| Server
    Server --> |Response| Client
    Server --> Validation
    Server --> Auth
    Auth --> |Access Token| PayPal
    
    Server --> Orders
    Server --> Payments
    Server --> Payouts
    Server --> Invoicing
    Server --> Products
    Server --> Disputes
    Server --> Identity

    style Client fill:#f9f,stroke:#333,stroke-width:2px
    style Server fill:#bbf,stroke:#333,stroke-width:2px
    style Auth fill:#bfb,stroke:#333,stroke-width:2px
    style Validation fill:#bfb,stroke:#333,stroke-width:2px

Features

Payment Processing
- Create and manage orders
- Process payments
- Handle payment tokens
- Manage disputes
Business Operations
- Create and manage products
- Generate invoices
- Process payouts
- Handle partner referrals
User Management
- Identity verification
- User information retrieval
- Web profile management

Installation

Installing via Smithery

To install PayPal MCP Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @DynamicEndpoints/Paypal-MCP --client claude

Manual Installation

Clone the repository
Install dependencies:
```
npm install
```
Build the project:
```
npm run build
```

Configure PayPal credentials in the MCP settings file:

{
  "mcpServers": {
    "paypal": {
      "command": "node",
      "args": ["path/to/paypal-server/build/index.js"],
      "env": {
        "PAYPAL_CLIENT_ID": "your_client_id",
        "PAYPAL_CLIENT_SECRET": "your_client_secret"
      },
      "disabled": false,
      "autoApprove": []
    }
  }
}

Available Tools

Payment Operations

create_payment_token

Create a payment token for future use.

{
  customer: {
    id: string;
    email_address?: string;
  };
  payment_source: {
    card?: {
      name: string;
      number: string;
      expiry: string;
      security_code: string;
    };
    paypal?: {
      email_address: string;
    };
  };
}

create_order

Create a new order in PayPal.

{
  intent: 'CAPTURE' | 'AUTHORIZE';
  purchase_units: Array<{
    amount: {
      currency_code: string;
      value: string;
    };
    description?: string;
    reference_id?: string;
  }>;
}

create_payment

Create a direct payment.

{
  intent: string;
  payer: {
    payment_method: string;
    funding_instruments?: Array<{
      credit_card?: {
        number: string;
        type: string;
        expire_month: number;
        expire_year: number;
        cvv2: string;
        first_name: string;
        last_name: string;
      };
    }>;
  };
  transactions: Array<{
    amount: {
      total: string;
      currency: string;
    };
    description?: string;
  }>;
}

Business Operations

create_product

Create a new product in the catalog.

{
  name: string;
  description: string;
  type: 'PHYSICAL' | 'DIGITAL' | 'SERVICE';
  category: string;
  image_url?: string;
  home_url?: string;
}

create_invoice

Generate a new invoice.

{
  invoice_number: string;
  reference: string;
  currency_code: string;
  recipient_email: string;
  items: Array<{
    name: string;
    quantity: string;
    unit_amount: {
      currency_code: string;
      value: string;
    };
  }>;
}

create_payout

Process a batch payout.

{
  sender_batch_header: {
    sender_batch_id: string;
    email_subject?: string;
    recipient_type?: string;
  };
  items: Array<{
    recipient_type: string;
    amount: {
      value: string;
      currency: string;
    };
    receiver: string;
    note?: string;
  }>;
}

User & Profile Management

get_userinfo

Retrieve user information.

{
  access_token: string;
}

create_web_profile

Create a web experience profile.

{
  name: string;
  presentation?: {
    brand_name?: string;
    logo_image?: string;
    locale_code?: string;
  };
  input_fields?: {
    no_shipping?: number;
    address_override?: number;
  };
  flow_config?: {
    landing_page_type?: string;
    bank_txn_pending_url?: string;
  };
}

Usage Examples

Creating an Order

const result = await mcpClient.useTool('paypal', 'create_order', {
  intent: 'CAPTURE',
  purchase_units: [{
    amount: {
      currency_code: 'USD',
      value: '100.00'
    },
    description: 'Premium Subscription'
  }]
});

Generating an Invoice

const result = await mcpClient.useTool('paypal', 'create_invoice', {
  invoice_number: 'INV-2024-001',
  reference: 'REF-2024-001',
  currency_code: 'USD',
  recipient_email: '[email protected]',
  items: [{
    name: 'Consulting Services',
    quantity: '1',
    unit_amount: {
      currency_code: 'USD',
      value: '500.00'
    }
  }]
});

Processing a Payout

const result = await mcpClient.useTool('paypal', 'create_payout', {
  sender_batch_header: {
    sender_batch_id: 'Payroll_2024_001',
    email_subject: 'You have received a payment'
  },
  items: [{
    recipient_type: 'EMAIL',
    amount: {
      value: '1000.00',
      currency: 'USD'
    },
    receiver: '[email protected]',
    note: 'Monthly salary payment'
  }]
});

Error Handling

The server implements comprehensive error handling:

Input validation errors with detailed messages
PayPal API errors with response details
Network and authentication errors
Rate limiting and timeout handling

Security Considerations

All sensitive data is validated and sanitized
OAuth 2.0 authentication with PayPal
Secure credential management through environment variables
Input validation for all API parameters
Error messages don't expose sensitive information

Development

Building

npm run build

Testing

npm test

Debugging

The server outputs detailed logs to help with debugging:

Authentication issues
API call failures
Validation errors
Request/response details

Contributing

Fork the repository
Create a feature branch
Commit your changes
Push to the branch
Create a Pull Request

License

MIT License

PayPal Integration