computer.webmcp.com WebMCP Tools, Schemas & Agent Capabilities

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computer.webmcp.com

demo Unverified (seed import) AI & Agents 30 tools imperative implementation

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WebMCP Computer — one browser machine shared by a human and an agent.

First seen 2026-09-07 · Last seen 2026-09-14 · Source: webmcp.com

Answer 11 · Act 17 · Transact 2 · Score: Not yet scored

Tool inspector

app_open

act imperative

Open a built-in WebMCP Computer app in a visible window. Optionally set x, y, width, height, and focus (default true); focus=false preserves current focus and places a new window below the focused window. Geometry uses the same work-area clamping as window_move and window_resize. Settings, Notes, and Preview are singletons: reopening one applies supplied placement to its existing window and returns reused: true. Files, Terminal, and Editor create new windows. For editor, path may select a ~-rooted text file. Agent-made App windows open through ui_open. Returns PID, app ID, optional path, applied rect, and reused.

Input schema

Property	Type	Required	Description
`appId`	string	yes	WebMCP Computer app identifier to open.
`path`	string	no	Optional ~-rooted file path. Valid only when appId is editor.
`x`	number	no	Optional work-area horizontal position in CSS pixels.
`y`	number	no	Optional work-area vertical position in CSS pixels.
`width`	number	no	Optional window width in CSS pixels.
`height`	number	no	Optional window height in CSS pixels.
`focus`	boolean	no	Whether to focus the opened or reused window; false places a new window below current focus.

Raw JSON schema

{
  "type": "object",
  "properties": {
    "appId": {
      "type": "string",
      "enum": [
        "files",
        "editor",
        "terminal",
        "notes",
        "preview",
        "settings"
      ],
      "description": "WebMCP Computer app identifier to open."
    },
    "path": {
      "type": "string",
      "description": "Optional ~-rooted file path. Valid only when appId is editor."
    },
    "x": {
      "type": "number",
      "description": "Optional work-area horizontal position in CSS pixels."
    },
    "y": {
      "type": "number",
      "description": "Optional work-area vertical position in CSS pixels."
    },
    "width": {
      "type": "number",
      "description": "Optional window width in CSS pixels."
    },
    "height": {
      "type": "number",
      "description": "Optional window height in CSS pixels."
    },
    "focus": {
      "type": "boolean",
      "description": "Whether to focus the opened or reused window; false places a new window below current focus."
    }
  },
  "required": [
    "appId"
  ],
  "additionalProperties": false
}

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