# MCP Server for Onecompiler

[Onecompiler](https://onecompiler.com?utm_source=dx&utm_medium=onecompiler-mcp-server) takes care of executing code with one unified API that does it all.

This is a [Model Context Protocol (MCP)](https://modelcontextprotocol.io/introduction) server that provides tools for interacting with the Onecompiler APIs.

## Features

- Execute code in Onecompiler

## Installation

To use the MCP server, you'll need an API key. You can create and manage API keys in **RapidAPI > OneCompiler APIs**:

- Live: https://rapidapi.com/onecompiler-onecompiler-default/api/onecompiler-apis

You can run the Onecompiler MCP server using `npx` with the following command:

```bash
npx -y @onecompiler/onecompiler-mcp-server --api-key=ONECOMPILER_API_KEY --provider=rapidapi
```

Replace `ONECOMPILER_API_KEY` with your API key retrieved from [rapidapi](https://rapidapi.com/onecompiler-onecompiler-default/api/onecompiler-apis)

If you have retrieved your API key from [onecompiler](https://onecompiler.com) instead of [rapidapi](https://rapidapi.com/onecompiler-onecompiler-default/api/onecompiler-apis), you can run the server using the following command:

```bash
npx -y @onecompiler/onecompiler-mcp-server --api-key=ONECOMPILER_API_KEY --provider=onecompiler
```

To run the server in a client like Claude Desktop, Cursor, Cline or Windsurf, add the following to your MCP config:

```json
{
  "mcpServers": {
    "onecompiler": {
      "command": "npx",
      "args": ["-y", "@onecompiler/onecompiler-mcp-server", "--api-key=ONECOMPILER_API_KEY", "--provider=rapidapi"]
    }
  }
}
```

or pass as values in env variables, example:

```json
{
  "mcpServers": {
    "onecompiler": {
      "command": "npx",
      "args": ["-y", "@onecompiler/onecompiler-mcp-server"],
      "env": {
        "ONECOMPILER_API_KEY": "your_api_key",
        "ONECOMPILER_PROVIDER": "rapidapi"
      }
    }
  }
}
```

For detailed setup guides, see:

- [Claude Desktop](https://modelcontextprotocol.io/quickstart/user)
- [Cursor](https://docs.cursor.com/context/model-context-protocol)
- [Windsurf](https://docs.codeium.com/windsurf/mcp)

## Development

1. Install dependencies:

   ```bash
   npm install
   ```

2. Build the server:

   ```bash
   npm build
   ```

3. Update client to use the local build:
   ```json
   {
     "mcpServers": {
       "onecompiler": {
         "command": "node",
         "args": ["path/to/onecompiler-mcp-server/build/index.js"],
         "env": {
           "ONECOMPILER_API_KEY": "your_api_key",
           "ONECOMPILER_PROVIDER": "(rapidapi | onecompiler)",
           "ONECOMPILER_ENVIRONMENT": "(sandbox | production)"
         }
       }
     }
   }
   ```

Note: Use `ONECOMPILER_ENVIRONMENT`, only if `ONECOMPILER_PROVIDER` is set to `onecompiler`.

## Debugging

To debug the MCP server, you can use the MCP Inspector tool:

1. Run the server with the inspector:

   ```bash
   pnpm inspector
   ```

2. Open the provided URL in your browser to view and debug the MCP requests and responses.

3. Include the `--api-key`, `--environment` or `--provider` arguments.