PayPal MCP Server

Maintained by DynamicEndpoints - Contact: kameron@dynamicendpoints.com

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

1. Clone the repository
2. Install dependencies:

   npm install
   

3. Build the project:

   npm run build
   

4. 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: 'customer@example.com',
  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: 'employee@example.com',
    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

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

MIT License