Cursor

Replace onss_live_… with your key, or copy the config from the dialog that showed the key: it has the key in it already.

Open mcp.json

Use ~/.cursor/mcp.json to have it in every project, or .cursor/mcp.json in one project.

Add the server

If the file has no other server, replace its contents with this. If it has, add onosso inside its mcpServers.

mcp.json

{
  "mcpServers": {
    "onosso": {
      "url": "https://app.onosso.app/v1/mcp",
      "headers": {
        "Authorization": "Bearer onss_live_…"
      }
    }
  }
}

MCP guide

Connect

Reference