VS Code

VS Code agent mode and GitHub Copilot read MCP servers from mcp.json. Use .vscode/mcp.json for one workspace, or run MCP: Open User Configuration from the Command Palette to edit the mcp.json in your user profile, which applies to every workspace.

Configuration

{
  "servers": {
    "dagu": {
      "type": "http",
      "url": "http://localhost:8080/mcp",
      "headers": {
        "Authorization": "Bearer ${input:dagu-api-key}"
      }
    }
  },
  "inputs": [
    {
      "type": "promptString",
      "id": "dagu-api-key",
      "description": "Dagu MCP API key",
      "password": true
    }
  ]
}

The top-level key is servers, not mcpServers. HTTP servers accept type, url, headers, and oauth.

${input:dagu-api-key} makes VS Code prompt for the key the first time the server starts and store it securely afterwards, which keeps the key out of a committed file. "password": true masks the input. Drop the headers block and the inputs array when the Dagu server runs with authentication disabled.

Verify

Run MCP: List Servers or MCP: Show Installed Servers from the Command Palette, then select dagu to inspect its state and tools. Other useful commands:

Command	Purpose
MCP: Add Server	Guided flow for adding a server
MCP: Open User Configuration	Edit the profile-level mcp.json
MCP: Open Workspace Folder MCP Configuration	Edit .vscode/mcp.json
MCP: Reset Cached Tools	Re-read the tool list after a Dagu upgrade
MCP: Reset Trust	Re-prompt for workspace server trust

Reference: VS Code MCP configuration reference.