PayPal Java MCP Server

@kumartheashwani

代码仓库

基本信息

分类

金融与商务

传输方式

stdio

作者

kumartheashwani

关于 PayPal Java MCP Server

PayPal-Java-MCP Server

PayPal Java MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "paypal-java-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "paypal-mcp-jsonrpc"
      ]
    }
  }
}

PayPal Java MCP Server 工具

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概览

What is PayPal Java MCP Server?

PayPal Java MCP Server is a Java implementation of a PayPal Merchant Capability Platform (MCP) server that provides tools for analyzing and improving payment processing. It offers JSON-RPC over HTTP and stdio interfaces, designed for developers integrating with PayPal’s capabilities.

How to use PayPal Java MCP Server?

Run in web mode (java -jar target/paypal-java-mcp-server-0.0.1-SNAPSHOT.jar) to expose a REST API on port 8080, or in stdio mode (java -Dspring.profiles.active=stdio ...) for JSON-RPC over standard input/output. Deploy with Smithery using the provided prepare-smithery.sh script or Docker.

Key features of PayPal Java MCP Server

JSON-RPC over HTTP API for web clients
JSON-RPC over stdio interface for Smithery integration
Authorization rate improvement analysis tool
Basic calculator tool for testing
Docker support for both REST API and JSON-RPC servers
Non‑interactive mode using named pipes

Use cases of PayPal Java MCP Server

Analyze transaction data and receive recommendations to improve authorization rates
Perform basic math operations as a testing tool
Deploy as a Smithery‑compatible server for AI‑assisted payment optimization
Run in non‑interactive environments (e.g., Docker, headless servers)

常见问题

What are the prerequisites for running the server?

Java 17 or higher and Maven 3.6 or higher are required.

How do I run the server in web mode?

Use `java -jar target/paypal-java-mcp-server-0.0.1-SNAPSHOT.jar`; the REST API is available at `http://localhost:8080/api/mcp`.

How do I run the server in JSON‑RPC over stdio mode?

Use the command with `-Dspring.profiles.active=stdio -Dspring.main.web-application-type=NONE -Djsonrpc.stdio.interactive=true -jar target/paypal-java-mcp-server-0.0.1-SNAPSHOT-stdio.jar`. The server reads requests from stdin and writes responses to stdout.

How can I deploy the server with Smithery?

Run `./prepare-smithery.sh` to create a `smithery-deploy` directory with the JAR, configuration, and scripts. The Smithery config must set `"interactive": true` and include the `-Djsonrpc.stdio.interactive=true` flag.

What should I do if my environment does not support interactive stdio?

Use the `start-non-interactive.sh` script, which creates named pipes and pre‑initializes the server. Alternatively, set `"interactive": false` in the Smithery configuration and start the server with `-Djsonrpc.stdio.interactive=false`.

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