Provides tools for performing web searches and local searches using the Brave Search API, enabling automated information retrieval from the web.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@MCP Nexus Search for the latest research on the impacts of climate change on coastal cities"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
One-click deployment of MCP Nexus to Cloudflare's free tier. This provides a unified MCP server for Tavily and Brave Search APIs with automatic API key rotation.
Zero-cost hosting on Cloudflare Workers free tier
D1 Database for persistent storage (automatic provisioning)
Encrypted API keys with Web Crypto API
Admin UI included - Full web interface for managing keys and tokens
7 MCP tools: tavily_search, tavily_extract, tavily_crawl, tavily_map, tavily_research, brave_web_search, brave_local_search
Related MCP server: mcp-nexus
Click the button above and follow the prompts. You'll be asked to:
Authorize Cloudflare to access your GitHub (fork will be created)
Configure secrets:
ADMIN_API_TOKEN: Token for admin API access (generate with openssl rand -hex 32)
KEY_ENCRYPTION_SECRET: Key for encrypting API keys (generate with openssl rand -base64 32)
# Clone the repo
git clone https://github.com/ykq007/mcp-nexus.git
cd mcp-nexus/packages/worker
# Install dependencies
npm install
# Create D1 database
npx wrangler d1 create mcp-nexus-db
# Copy the database_id from output to wrangler.jsonc
# Set secrets
npx wrangler secret put ADMIN_API_TOKEN
npx wrangler secret put KEY_ENCRYPTION_SECRET
# Run migrations and deploy
npm run deployAfter deployment, you need to add API keys and create client tokens.
curl -X POST https://your-worker.workers.dev/admin/api/tavily-keys \
-H "Authorization: Bearer YOUR_ADMIN_TOKEN" \
-H "Content-Type: application/json" \
-d '{"label": "Primary Key", "key": "tvly-xxxxx"}'curl -X POST https://your-worker.workers.dev/admin/api/brave-keys \
-H "Authorization: Bearer YOUR_ADMIN_TOKEN" \
-H "Content-Type: application/json" \
-d '{"label": "Primary Key", "key": "BSAxxxxx"}'curl -X POST https://your-worker.workers.dev/admin/api/tokens \
-H "Authorization: Bearer YOUR_ADMIN_TOKEN" \
-H "Content-Type: application/json" \
-d '{"description": "Claude Desktop"}'Save the returned token - it's only shown once.
{
"mcpServers": {
"mcp-nexus": {
"command": "npx",
"args": ["-y", "@anthropic-ai/mcp-proxy", "https://your-worker.workers.dev/mcp"],
"env": {
"MCP_HEADERS": "Authorization: Bearer YOUR_CLIENT_TOKEN"
}
}
}
}curl -X POST https://your-worker.workers.dev/mcp \
-H "Authorization: Bearer YOUR_CLIENT_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "tools/list",
"id": 1
}'Endpoint | Auth | Description |
| Client Token | MCP JSON-RPC endpoint |
| None | Health check |
| Admin Token | List Tavily keys |
| Admin Token | Add Tavily key |
| Admin Token | Delete Tavily key |
| Admin Token | List Brave keys |
| Admin Token | Add Brave key |
| Admin Token | Delete Brave key |
| Admin Token | List client tokens |
| Admin Token | Create client token |
| Admin Token | Revoke client token |
| Admin Token | Get settings |
| Admin Token | Update settings |
| Admin Token | View usage logs |
# Install dependencies
npm install
# Create local D1 database
npm run db:migrate:local
# Start dev server
npm run dev┌─────────────────────────────────────────────────────────┐
│ Cloudflare Workers │
├─────────────────────────────────────────────────────────┤
│ Hono Router │
│ ├── /mcp (MCP JSON-RPC) │
│ ├── /admin/api/* (Admin API) │
│ └── /health │
├─────────────────────────────────────────────────────────┤
│ Services │
│ ├── Key Pool (rotation, cooldown) │
│ ├── Tavily Client │
│ └── Brave Client │
├─────────────────────────────────────────────────────────┤
│ D1 Database │
│ ├── tavily_keys (encrypted) │
│ ├── brave_keys (encrypted) │
│ ├── client_tokens (hashed) │
│ ├── server_settings │
│ └── usage_logs │
└─────────────────────────────────────────────────────────┘MIT
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If you are the server author, to access and configure the admin panel.
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