Onyx MCP

io.github.ByWaleed/onyx-mcp

Secure MCP access to Onyx search, chat, projects, and administration.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "onyx-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "onyx-mcp@0.2.1"
      ],
      "env": {
        "ONYX_API_URL": "<your ONYX_API_URL>",
        "ONYX_API_TOKEN": "<your ONYX_API_TOKEN>",
        "ONYX_DEFAULT_PERSONA_ID": "0",
        "ONYX_MCP_ENABLE_WEB_FETCH": "false"
      }
    }
  }
}
Environment variables
  • ONYX_API_URLrequiredOnyx API base URL, for example https://onyx.example.com/api
  • ONYX_API_TOKENrequiredsecretOnyx Personal Access Token or API key
  • ONYX_DEFAULT_PERSONA_IDDefault Onyx agent ID for new chats
  • ONYX_MCP_ENABLE_WEB_FETCHEnable web search and allowlisted URL fetching

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.2.1
Registry
active
Published
8/30/2026

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