# Social MCP

Multi-platform social media automation service that exposes browser-based actions as both MCP (Model Context Protocol) tools and a REST API. Currently supports **Xiaohongshu** (Little Red Book).

## Features

- **13 MCP tools** for Xiaohongshu: login management, content browsing, publishing, and interactions
- **REST API** with Bearer token authentication and rate limiting
- **Browser automation** via rebrowser-playwright with anti-detection patches
- **Cookie persistence** with file-based storage (0600 permissions, atomic writes)
- **Security**: DNS rebinding protection, Host header validation, error message sanitization, log redaction
- **Docker support** with hardened configuration (non-root user, read-only filesystem, resource limits)
- **Plugin architecture** for adding new platforms

## Quick Start

### Prerequisites

- Node.js >= 22.0.0
- pnpm

### Install and Run

```bash
# Install dependencies
pnpm install

# Install Playwright browsers (first time only)
npx playwright install chromium

# Build
pnpm build

# Start the server
pnpm start
```

The server starts on `http://127.0.0.1:3000` by default. A REST API Bearer token is printed to the console on first startup and saved to `~/.social-mcp/.api-token`.

### Development

```bash
# Watch mode (rebuilds on file changes)
pnpm dev

# Type check without emitting
pnpm lint

# Run tests
pnpm test
```

## MCP Integration

### Claude Desktop

Add the following to your Claude Desktop configuration file (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "social-mcp": {
      "url": "http://127.0.0.1:3000/sse"
    }
  }
}
```

### Available MCP Tools

| Tool | Description |
|------|-------------|
| `xhs_check_login` | Check Xiaohongshu login status |
| `xhs_get_login_qrcode` | Get login QR code for phone scanning |
| `xhs_delete_cookies` | Delete cookies and reset login session |
| `xhs_list_feeds` | Get explore page recommended feed list |
| `xhs_search` | Search notes by keyword with filters |
| `xhs_get_feed_detail` | Get note detail with content, images, stats, comments |
| `xhs_get_user_profile` | Get user profile with bio, stats, recent notes |
| `xhs_publish_image` | Publish an image note |
| `xhs_publish_video` | Publish a video note |
| `xhs_post_comment` | Post a comment on a note |
| `xhs_reply_comment` | Reply to a comment |
| `xhs_like` | Like or unlike a note |
| `xhs_favorite` | Favorite or unfavorite a note |

## REST API

All REST endpoints require a `Bearer` token in the `Authorization` header. The token is generated on first startup and printed to the console.

```bash
# Example: check login status
curl -H "Authorization: Bearer <token>" http://127.0.0.1:3000/api/xhs/login/status

# Example: search notes
curl -X POST -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{"keyword": "travel", "filters": {"sort": "popularity_descending"}}' \
  http://127.0.0.1:3000/api/xhs/search
```

### Endpoints

| Method | Path | Description | Rate Limit |
|--------|------|-------------|------------|
| `GET` | `/api/xhs/login/status` | Check login status | 60/min |
| `GET` | `/api/xhs/login/qrcode` | Get login QR code | 60/min |
| `DELETE` | `/api/xhs/login/cookies` | Delete cookies | 10/min |
| `GET` | `/api/xhs/feeds` | Get recommended feeds | 60/min |
| `POST` | `/api/xhs/search` | Search notes | 60/min |
| `POST` | `/api/xhs/feeds/detail` | Get note detail | 60/min |
| `POST` | `/api/xhs/user/profile` | Get user profile | 60/min |
| `POST` | `/api/xhs/publish/image` | Publish image note | 10/min |
| `POST` | `/api/xhs/publish/video` | Publish video note | 10/min |
| `POST` | `/api/xhs/comment` | Post a comment | 10/min |
| `POST` | `/api/xhs/comment/reply` | Reply to a comment | 10/min |
| `POST` | `/api/xhs/like` | Like/unlike a note | 10/min |
| `POST` | `/api/xhs/favorite` | Favorite/unfavorite a note | 10/min |

### Response Format

All REST responses follow a consistent JSON format:

```json
// Success
{
  "success": true,
  "data": { ... }
}

// Error
{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "keyword: Required"
  }
}
```

### Other Endpoints (no auth required)

| Method | Path | Description |
|--------|------|-------------|
| `GET` | `/health` | Health check (memory, uptime, plugin status) |
| `GET` | `/sse` | MCP SSE transport |
| `POST` | `/messages` | MCP JSON-RPC messages |

## Docker Deployment

### Using Docker Compose (recommended)

```bash
cd deploy
docker compose up -d

# View logs
docker compose logs -f

# The API token is printed in the logs on first start
docker compose logs social-mcp | grep "Bearer Token"
```

### Using Docker directly

```bash
# Build the image
docker build -t social-mcp .

# Run with required settings
docker run -d \
  --name social-mcp \
  -p 127.0.0.1:3000:3000 \
  --shm-size=1gb \
  --memory=2g \
  --cpus=2.0 \
  --security-opt=no-new-privileges:true \
  --cap-drop=ALL \
  --read-only \
  --tmpfs /tmp:size=512m \
  -v social-mcp-data:/home/appuser/.social-mcp \
  social-mcp
```

**Important**: The `--shm-size=1gb` flag is required. Chromium uses `/dev/shm` for shared memory and the default 64MB causes crashes.

## Environment Variables

| Variable | Default | Description |
|----------|---------|-------------|
| `PORT` | `3000` | HTTP server port |
| `HOST` | `127.0.0.1` | Bind address (`0.0.0.0` requires `ALLOW_REMOTE`) |
| `HEADLESS` | `true` | Run browser in headless mode |
| `BROWSER_BIN` | (auto) | Custom Chromium executable path |
| `LOG_LEVEL` | `info` | Pino log level (`debug`, `info`, `warn`, `error`) |
| `NODE_ENV` | `development` | Environment (`production` disables pretty logs) |
| `COOKIE_DIR` | `~/.social-mcp` | Directory for cookie and token storage |
| `MAX_QUEUE_DEPTH` | `10` | Max pending operations per platform queue |
| `ALLOW_REMOTE` | (unset) | Set to `yes-i-understand-the-risk` to allow `HOST=0.0.0.0` |

## Project Structure

```
social-mcp/
├── package.json
├── tsconfig.json
├── tsup.config.ts
├── Dockerfile
├── deploy/
│   └── docker-compose.yml
├── src/
│   ├── index.ts                     # Entry point: bootstrap, plugin registration, graceful shutdown
│   ├── server/
│   │   ├── app.ts                   # AppServer: Express + MCP lifecycle
│   │   └── middleware.ts            # DNS rebinding guard, bearer auth, rate limiter, error handler
│   ├── browser/
│   │   └── manager.ts              # BrowserManager: browser lifecycle, serial queues, backpressure
│   ├── cookie/
│   │   └── store.ts                # CookieStore: per-platform cookie persistence (0600, atomic writes)
│   ├── config/
│   │   └── index.ts                # Environment-based configuration
│   ├── utils/
│   │   ├── logger.ts               # Pino logger with deep redaction
│   │   ├── errors.ts               # Error classification, sanitization, MCP error wrapper
│   │   └── downloader.ts           # Media file download and path validation
│   └── platforms/
│       └── xiaohongshu/
│           ├── index.ts            # PlatformPlugin: MCP tool + REST route registration
│           ├── routes.ts           # REST API route handlers
│           ├── schemas.ts          # Zod schemas for tool/API parameter validation
│           ├── types.ts            # Domain types (Feed, Comment, UserProfile, etc.)
│           ├── selectors.ts        # CSS selector constants
│           ├── login.ts            # Login management (QR code, status check)
│           ├── feeds.ts            # Explore page feed extraction
│           ├── search.ts           # Search with filters
│           ├── feed-detail.ts      # Note detail + comment loading
│           ├── user-profile.ts     # User profile extraction
│           ├── publish.ts          # Image note publishing
│           ├── publish-video.ts    # Video note publishing
│           ├── comment.ts          # Comment and reply posting
│           └── interaction.ts      # Like and favorite toggling
└── tests/
```

## License

ISC