/** * MCP tool schemas for the computer-use server. Mirrors * claude-for-chrome-mcp/src/browserTools.ts in shape (plain `Tool`-shaped * object literals, no zod). * * Coordinate descriptions are baked in at tool-list build time from the * `chicago_coordinate_mode` gate. The model sees exactly ONE coordinate * convention in the param descriptions and never learns the other exists. * The host (`serverDef.ts`) reads the same frozen gate value for * `scaleCoord` — both must agree or clicks land in the wrong space. */ import type { Tool } from '@modelcontextprotocol/sdk/types.js' import type { CoordinateMode } from './types.js' // See packages/desktop/computer-use-mcp/COORDINATES.md before touching any // model-facing coordinate text. Chrome's browserTools.ts:143 is the reference // phrasing — "pixels from the left edge", no geometry, no number to do math with. const COORD_DESC: Record = { pixels: { x: 'Horizontal pixel position read directly from the most recent screenshot image, measured from the left edge. The server handles all scaling.', y: 'Vertical pixel position read directly from the most recent screenshot image, measured from the top edge. The server handles all scaling.', }, normalized_0_100: { x: 'Horizontal position as a percentage of screen width, 0.0–100.0 (0 = left edge, 100 = right edge).', y: 'Vertical position as a percentage of screen height, 0.0–100.0 (0 = top edge, 100 = bottom edge).', }, } const FRONTMOST_GATE_DESC = 'The frontmost application must be in the session allowlist at the time of this call, or this tool returns an error and does nothing.' /** * Item schema for the `actions` array in `computer_batch`, `teach_step`, and * `teach_batch`. All three dispatch through the same `dispatchAction` path * with the same validation — keep this enum in sync with `BATCHABLE_ACTIONS` * in toolCalls.ts. */ const BATCH_ACTION_ITEM_SCHEMA = { type: 'object', properties: { action: { type: 'string', enum: [ 'key', 'type', 'mouse_move', 'left_click', 'left_click_drag', 'right_click', 'middle_click', 'double_click', 'triple_click', 'scroll', 'hold_key', 'screenshot', 'cursor_position', 'left_mouse_down', 'left_mouse_up', 'wait', ], description: 'The action to perform.', }, coordinate: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: '(x, y) for click/mouse_move/scroll/left_click_drag end point.', }, start_coordinate: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: '(x, y) drag start — left_click_drag only. Omit to drag from current cursor.', }, text: { type: 'string', description: 'For type: the text. For key/hold_key: the chord string. For click/scroll: modifier keys to hold.', }, scroll_direction: { type: 'string', enum: ['up', 'down', 'left', 'right'], }, scroll_amount: { type: 'integer', minimum: 0, maximum: 100 }, duration: { type: 'number', description: 'Seconds (0–100). For hold_key/wait.', }, repeat: { type: 'integer', minimum: 1, maximum: 100, description: 'For key: repeat count.', }, }, required: ['action'], } /** * Build the tool list. Parameterized by capabilities and coordinate mode so * descriptions are honest and unambiguous (plan §1 — "Unfiltered + honest"). * * `coordinateMode` MUST match what the host passes to `scaleCoord` at tool- * -call time. Both should read the same frozen-at-load gate constant. * * `installedAppNames` — optional pre-sanitized list of app display names to * enumerate in the `request_access` description. The caller is responsible * for sanitization (length cap, character allowlist, sort, count cap) — * this function just splices the list into the description verbatim. Omit * to fall back to the generic "display names or bundle IDs" wording. */ export function buildComputerUseTools( caps: { screenshotFiltering: 'native' | 'none' platform: 'darwin' | 'win32' | 'linux' /** Include request_teach_access + teach_step. Read once at server construction. */ teachMode?: boolean }, coordinateMode: CoordinateMode, installedAppNames?: string[], ): Tool[] { const coord = COORD_DESC[coordinateMode] // Shared hint suffix for BOTH request_access and request_teach_access — // they use the same resolveRequestedApps path, so the model should get // the same enumeration for both. const installedAppsHint = installedAppNames && installedAppNames.length > 0 ? ` Available applications on this machine: ${installedAppNames.join(', ')}.` : '' // [x, y]` tuple — param shape for all // click/move/scroll tools. const coordinateTuple = { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: `(x, y): ${coord.x}`, } // Modifier hold during click. Shared across all 5 click variants. const clickModifierText = { type: 'string', description: 'Modifier keys to hold during the click (e.g. "shift", "ctrl+shift"). Supports the same syntax as the key tool.', } const screenshotDesc = caps.screenshotFiltering === 'native' ? 'Take a screenshot of the primary display. Applications not in the session allowlist are excluded at the compositor level — only granted apps and the desktop are visible.' : 'Take a screenshot of the primary display. On this platform, screenshots are NOT filtered — all open windows are visible. Input actions targeting apps not in the session allowlist are rejected.' return [ { name: 'request_access', description: 'Request user permission to control a set of applications for this session. Must be called before any other tool in this server. ' + 'The user sees a single dialog listing all requested apps and either allows the whole set or denies it. ' + 'Call this again mid-session to add more apps; previously granted apps remain granted. ' + 'Returns the granted apps, denied apps, and screenshot filtering capability.', inputSchema: { type: 'object' as const, properties: { apps: { type: 'array', items: { type: 'string' }, description: 'Application display names (e.g. "Slack", "Calendar") or bundle identifiers (e.g. "com.tinyspeck.slackmacgap"). Display names are resolved case-insensitively against installed apps.' + installedAppsHint, }, reason: { type: 'string', description: 'One-sentence explanation shown to the user in the approval dialog. Explain the task, not the mechanism.', }, clipboardRead: { type: 'boolean', description: "Also request permission to read the user's clipboard (separate checkbox in the dialog).", }, clipboardWrite: { type: 'boolean', description: "Also request permission to write the user's clipboard. When granted, multi-line `type` calls use the clipboard fast path.", }, systemKeyCombos: { type: 'boolean', description: 'Also request permission to send system-level key combos (quit app, switch app, lock screen). Without this, those specific combos are blocked.', }, }, required: ['apps', 'reason'], }, }, { name: 'screenshot', description: screenshotDesc + ' Returns an error if the allowlist is empty. The returned image is what subsequent click coordinates are relative to.', inputSchema: { type: 'object' as const, properties: { save_to_disk: { type: 'boolean', description: "Save the image to disk so it can be attached to a message for the user. Returns the saved path in the tool result. Only set this when you intend to share the image — screenshots you're just looking at don't need saving.", }, }, required: [], }, }, { name: 'zoom', description: 'Take a higher-resolution screenshot of a specific region of the last full-screen screenshot. Use this liberally to inspect small text, button labels, or fine UI details that are hard to read in the downsampled full-screen image. ' + 'IMPORTANT: Coordinates in subsequent click calls always refer to the full-screen screenshot, never the zoomed image. This tool is read-only for inspecting detail.', inputSchema: { type: 'object' as const, properties: { region: { type: 'array', items: { type: 'integer' }, minItems: 4, maxItems: 4, description: '(x0, y0, x1, y1): Rectangle to zoom into, in the coordinate space of the most recent full-screen screenshot. x0,y0 = top-left, x1,y1 = bottom-right.', }, save_to_disk: { type: 'boolean', description: 'Save the image to disk so it can be attached to a message for the user. Returns the saved path in the tool result. Only set this when you intend to share the image.', }, }, required: ['region'], }, }, { name: 'left_click', description: `Left-click at the given coordinates. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, text: clickModifierText, }, required: ['coordinate'], }, }, { name: 'double_click', description: `Double-click at the given coordinates. Selects a word in most text editors. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, text: clickModifierText, }, required: ['coordinate'], }, }, { name: 'triple_click', description: `Triple-click at the given coordinates. Selects a line in most text editors. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, text: clickModifierText, }, required: ['coordinate'], }, }, { name: 'right_click', description: `Right-click at the given coordinates. Opens a context menu in most applications. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, text: clickModifierText, }, required: ['coordinate'], }, }, { name: 'middle_click', description: `Middle-click (scroll-wheel click) at the given coordinates. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, text: clickModifierText, }, required: ['coordinate'], }, }, { name: 'type', description: `Type text into whatever currently has keyboard focus. ${FRONTMOST_GATE_DESC} Newlines are supported. For keyboard shortcuts use \`key\` instead.`, inputSchema: { type: 'object' as const, properties: { text: { type: 'string', description: 'Text to type.' }, }, required: ['text'], }, }, { name: 'key', description: `Press a key or key combination (e.g. "return", "escape", "cmd+a", "ctrl+shift+tab"). ${FRONTMOST_GATE_DESC} ` + 'System-level combos (quit app, switch app, lock screen) require the `systemKeyCombos` grant — without it they return an error. All other combos work.', inputSchema: { type: 'object' as const, properties: { text: { type: 'string', description: 'Modifiers joined with "+", e.g. "cmd+shift+a".', }, repeat: { type: 'integer', minimum: 1, maximum: 100, description: 'Number of times to repeat the key press. Default is 1.', }, }, required: ['text'], }, }, { name: 'scroll', description: `Scroll at the given coordinates. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, scroll_direction: { type: 'string', enum: ['up', 'down', 'left', 'right'], description: 'Direction to scroll.', }, scroll_amount: { type: 'integer', minimum: 0, maximum: 100, description: 'Number of scroll ticks.', }, }, required: ['coordinate', 'scroll_direction', 'scroll_amount'], }, }, { name: 'left_click_drag', description: `Press, move to target, and release. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: { ...coordinateTuple, description: `(x, y) end point: ${coord.x}`, }, start_coordinate: { ...coordinateTuple, description: `(x, y) start point. If omitted, drags from the current cursor position. ${coord.x}`, }, }, required: ['coordinate'], }, }, { name: 'mouse_move', description: `Move the mouse cursor without clicking. Useful for triggering hover states. ${FRONTMOST_GATE_DESC}`, inputSchema: { type: 'object' as const, properties: { coordinate: coordinateTuple, }, required: ['coordinate'], }, }, { name: 'open_application', description: 'Bring an application to the front, launching it if necessary. The target application must already be in the session allowlist — call request_access first.', inputSchema: { type: 'object' as const, properties: { app: { type: 'string', description: 'Display name (e.g. "Slack") or bundle identifier (e.g. "com.tinyspeck.slackmacgap").', }, }, required: ['app'], }, }, // Window management — Win32 API targeted at bound HWND, no global shortcuts. // Only available on Windows when a window is bound via open_application. ...(caps.platform === 'win32' ? [ { name: 'window_management', description: 'Manage the bound application window via Win32 API calls (ShowWindow, SetWindowPos, SendMessage). ' + 'All operations target the bound HWND directly — NO global shortcuts (Win+Down, Alt+F4, etc.). ' + 'The window must have been opened via open_application first. ' + 'Actions: minimize (hide to taskbar), maximize (fill screen), restore (undo min/max), ' + 'close (graceful WM_CLOSE), focus (bring to front), move_offscreen (move to -32000,-32000 for background operation). ' + 'Use move_resize to reposition or resize the window to specific coordinates.', inputSchema: { type: 'object' as const, properties: { action: { type: 'string', enum: [ 'minimize', 'maximize', 'restore', 'close', 'focus', 'move_offscreen', 'move_resize', 'get_rect', ], description: 'minimize: ShowWindow(SW_MINIMIZE). ' + 'maximize: ShowWindow(SW_MAXIMIZE). ' + 'restore: ShowWindow(SW_RESTORE) — undo minimize or maximize. ' + 'close: SendMessage(WM_CLOSE) — graceful close. ' + 'focus: SetForegroundWindow + BringWindowToTop. ' + 'move_offscreen: SetWindowPos(-32000,-32000) — keeps window usable by SendMessage/PrintWindow but invisible. ' + 'move_resize: SetWindowPos to specific x,y,width,height. ' + 'get_rect: GetWindowRect — returns current position and size.', }, x: { type: 'integer', description: 'X position for move_resize.', }, y: { type: 'integer', description: 'Y position for move_resize.', }, width: { type: 'integer', description: 'Width for move_resize.', }, height: { type: 'integer', description: 'Height for move_resize.', }, }, required: ['action'], }, } as Tool, { name: 'click_element', description: 'Click a GUI element by its accessible name, role, or automationId — no pixel coordinates needed. ' + 'Uses Windows UI Automation to find the element and InvokePattern to click it. ' + 'Prefer this over left_click when the element name is visible in the accessibility snapshot. ' + 'Falls back to BoundingRect center-click if InvokePattern is not supported.', inputSchema: { type: 'object' as const, properties: { name: { type: 'string', description: 'Accessible name of the element (e.g. "Save", "File", "Search..."). Case-insensitive partial match.', }, role: { type: 'string', description: 'Control type (e.g. "Button", "MenuItem", "Edit", "Link"). Optional — narrows the search.', }, automationId: { type: 'string', description: 'Exact automationId from the accessibility snapshot. Most precise selector.', }, }, required: [], }, } as Tool, { name: 'type_into_element', description: 'Type text into a named GUI element using Windows UI Automation ValuePattern. ' + 'Finds the element by name/role/automationId, then sets its value directly — ' + 'no need to click first or use pixel coordinates. Works on Edit, ComboBox, and other value-holding controls.', inputSchema: { type: 'object' as const, properties: { name: { type: 'string', description: 'Accessible name of the target element.', }, role: { type: 'string', description: 'Control type (optional, e.g. "Edit").', }, automationId: { type: 'string', description: 'Exact automationId.', }, text: { type: 'string', description: 'Text to type/set into the element.', }, }, required: ['text'], }, } as Tool, { name: 'open_terminal', description: 'Open a new terminal window and launch an AI agent CLI. ' + 'This is a workflow tool that automates: open terminal → type startup command → press Enter → wait → verify. ' + "Supported agents: claude (runs 'claude'), codex (runs 'codex'), gemini (runs 'gemini'), " + 'or any custom command. After launching, the tool binds to the new terminal window ' + 'and takes a screenshot to verify the agent started successfully. ' + "Use this when the user says: 'open Claude Code', 'start a Codex terminal', 'launch Gemini', etc.", inputSchema: { type: 'object' as const, properties: { agent: { type: 'string', enum: ['claude', 'codex', 'gemini', 'custom'], description: 'Which agent to launch. ' + "claude: runs 'claude' command. " + "codex: runs 'codex' command. " + "gemini: runs 'gemini' command. " + "custom: runs the command specified in 'command' parameter.", }, command: { type: 'string', description: "Custom command to run in the terminal. Only used when agent='custom'. Example: 'python app.py'", }, terminal: { type: 'string', enum: ['wt', 'powershell', 'cmd'], description: "Which terminal to open. Default: 'wt' (Windows Terminal). 'powershell' for PowerShell window, 'cmd' for Command Prompt.", }, working_directory: { type: 'string', description: 'Working directory for the terminal. If omitted, uses current directory.', }, }, required: ['agent'], }, } as Tool, { name: 'bind_window', description: 'Bind to a specific window for all subsequent operations (screenshot, click, type, etc.). ' + 'Once bound, screenshots capture only that window via PrintWindow, and all input goes through SendMessageW — ' + "no cursor movement, no focus steal, no interference with the user's desktop. " + 'Actions: bind (by title, hwnd, or pid), unbind (release binding), status (show current binding), list (show all visible windows). ' + "Use 'list' first to see available windows, then 'bind' with a title or hwnd. " + 'open_application auto-binds the launched window, but use this tool to bind to already-running windows or switch between windows.', inputSchema: { type: 'object' as const, properties: { action: { type: 'string', enum: ['bind', 'unbind', 'status', 'list'], description: 'bind: Bind to a window (specify title, hwnd, or pid). ' + 'unbind: Release the current binding, return to full-screen mode. ' + 'status: Show the currently bound window (hwnd, title, rect). ' + 'list: List all visible windows with hwnd, pid, and title.', }, title: { type: 'string', description: "Window title to search for (partial match, case-insensitive). For 'bind' action.", }, hwnd: { type: 'string', description: "Exact window handle from 'list' output. For 'bind' action.", }, pid: { type: 'integer', description: "Process ID to find window for. For 'bind' action.", }, }, required: ['action'], }, } as Tool, { name: 'activate_window', description: 'Activate the bound window: bring it to foreground, click to ensure keyboard focus, ' + 'and optionally send an initial key sequence. Use this before any input operations to guarantee ' + 'the window is ready to receive keyboard/mouse events. ' + 'Combines SetForegroundWindow + BringWindowToTop + SendMessage(WM_LBUTTONDOWN) in one call.', inputSchema: { type: 'object' as const, properties: { click_x: { type: 'integer', description: 'X coordinate to click after activation (client-area). If omitted, clicks center of window.', }, click_y: { type: 'integer', description: 'Y coordinate to click after activation (client-area). If omitted, clicks center of window.', }, }, required: [], }, } as Tool, { name: 'prompt_respond', description: 'Handle interactive CLI/terminal prompts (Yes/No, selection menus, confirmations). ' + 'Sends a sequence of key events to the bound window to navigate and confirm a prompt. ' + 'This is a convenience wrapper around bound-window keyboard input for common prompt flows. ' + 'Typical flows: ' + "1) Yes/No prompt → send 'y' or 'n' + Enter. " + '2) Arrow-key selection menu → send arrow_down/arrow_up N times + Enter. ' + '3) Text input prompt → type the response + Enter. ' + 'After responding, take a screenshot to verify the result.', inputSchema: { type: 'object' as const, properties: { response_type: { type: 'string', enum: ['yes', 'no', 'enter', 'escape', 'select', 'type'], description: "yes: send 'y' + Enter. " + "no: send 'n' + Enter. " + 'enter: send Enter only. ' + 'escape: send Escape (cancel). ' + "select: use arrow keys to navigate to an option, then Enter. Requires 'arrow_count'. " + "type: type custom text then Enter. Requires 'text'.", }, arrow_direction: { type: 'string', enum: ['up', 'down'], description: "Arrow key direction for 'select' type. Default: 'down'.", }, arrow_count: { type: 'integer', description: "Number of arrow key presses for 'select' type. Default: 1.", minimum: 0, maximum: 50, }, text: { type: 'string', description: "Text to type for 'type' response_type.", }, }, required: ['response_type'], }, } as Tool, { name: 'status_indicator', description: 'Control the visual status indicator overlay on the bound window. ' + 'The indicator is a small floating label at the bottom of the window that shows what Computer Use is doing. ' + 'It auto-shows during click/type/key/scroll operations, but you can also send custom messages. ' + 'Actions: show (display a custom message), hide (dismiss), status (check if active).', inputSchema: { type: 'object' as const, properties: { action: { type: 'string', enum: ['show', 'hide', 'status'], description: 'show: display a custom message on the indicator. hide: dismiss the indicator. status: check if indicator is active.', }, message: { type: 'string', description: "Custom message to display (for 'show' action). Supports emoji. Auto-fades after 2 seconds.", }, }, required: ['action'], }, } as Tool, { name: 'virtual_keyboard', description: 'Send keyboard input directly to the bound window via SendMessageW — independent of the physical keyboard. ' + 'The user can keep typing on their own keyboard without interference. ' + 'Supports: single keys, key combinations (Ctrl+S, Alt+F4), text input, and hold-key operations. ' + 'All input targets the bound HWND only — no global keyboard events.', inputSchema: { type: 'object' as const, properties: { action: { type: 'string', enum: ['type', 'combo', 'press', 'release', 'hold'], description: 'type: Send text string via WM_CHAR (Unicode, supports Chinese/emoji). ' + 'combo: Send a key combination like ctrl+s, alt+f4, ctrl+shift+a (press all, release in reverse). ' + "press: Press a key down and hold it (pair with 'release'). " + 'release: Release a previously pressed key. ' + 'hold: Press key(s) for a duration then release.', }, text: { type: 'string', description: "For 'type': the text to input. For 'combo': key combination string (e.g. 'ctrl+s', 'alt+tab', 'ctrl+shift+a'). For 'press'/'release': single key name (e.g. 'shift', 'ctrl', 'a').", }, duration: { type: 'number', description: "For 'hold': seconds to hold the key(s) before releasing. Default: 1.", }, repeat: { type: 'integer', description: 'Number of times to repeat the action. Default: 1.', minimum: 1, maximum: 100, }, }, required: ['action', 'text'], }, } as Tool, { name: 'virtual_mouse', description: 'Control a virtual mouse on the bound window via SendMessageW — independent of the physical mouse. ' + "The user's real cursor stays free. All operations target the bound HWND only.", inputSchema: { type: 'object' as const, properties: { action: { type: 'string', enum: [ 'click', 'double_click', 'right_click', 'move', 'drag', 'down', 'up', ], description: 'click: left-click at coordinate. ' + 'double_click: double left-click. ' + 'right_click: right-click. ' + 'move: move virtual cursor (visual only, no click). ' + 'drag: press at start, move to end, release. Requires coordinate (end) and start_coordinate. ' + 'down: press left button at coordinate (hold). ' + 'up: release left button at coordinate.', }, coordinate: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: '(x, y) client-area coordinate on the bound window.', }, start_coordinate: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: '(x, y) start point for drag. If omitted, drags from current virtual cursor position.', }, }, required: ['action', 'coordinate'], }, } as Tool, { name: 'mouse_wheel', description: 'Scroll inside the bound window using mouse wheel (WM_MOUSEWHEEL / WM_MOUSEHWHEEL). ' + "Unlike the generic 'scroll' tool which uses WM_VSCROLL (only works on scrollbar controls), " + 'mouse_wheel simulates the physical mouse wheel and works on Excel spreadsheets, web pages, ' + 'code editors, PDF viewers, and any modern UI. ' + 'Specify the click point within the window where the scroll should occur — ' + 'this determines which panel/pane/element receives the scroll.', inputSchema: { type: 'object' as const, properties: { coordinate: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: '(x, y) client-area coordinate where the scroll should occur. Determines which element receives the scroll.', }, delta: { type: 'integer', description: "Scroll amount in 'clicks'. Positive = scroll up, negative = scroll down. Each click = 3 lines typically. Use -3 to -5 for page-like scrolling.", }, direction: { type: 'string', enum: ['vertical', 'horizontal'], description: "Scroll direction. Default: 'vertical'. Use 'horizontal' for side-scrolling (e.g. wide Excel sheets, timeline views).", }, }, required: ['coordinate', 'delta'], }, } as Tool, ] : []), { name: 'switch_display', description: 'Switch which monitor subsequent screenshots capture. Use this when the ' + 'application you need is on a different monitor than the one shown. ' + 'The screenshot tool tells you which monitor it captured and lists ' + 'other attached monitors by name — pass one of those names here. ' + 'After switching, call screenshot to see the new monitor. ' + 'Pass "auto" to return to automatic monitor selection.', inputSchema: { type: 'object' as const, properties: { display: { type: 'string', description: 'Monitor name from the screenshot note (e.g. "Built-in Retina Display", ' + '"LG UltraFine"), or "auto" to re-enable automatic selection.', }, }, required: ['display'], }, }, { name: 'list_granted_applications', description: 'List the applications currently in the session allowlist, plus the active grant flags and coordinate mode. No side effects.', inputSchema: { type: 'object' as const, properties: {}, required: [], }, }, { name: 'read_clipboard', description: 'Read the current clipboard contents as text. Requires the `clipboardRead` grant.', inputSchema: { type: 'object' as const, properties: {}, required: [], }, }, { name: 'write_clipboard', description: 'Write text to the clipboard. Requires the `clipboardWrite` grant.', inputSchema: { type: 'object' as const, properties: { text: { type: 'string' }, }, required: ['text'], }, }, { name: 'wait', description: 'Wait for a specified duration.', inputSchema: { type: 'object' as const, properties: { duration: { type: 'number', description: 'Duration in seconds (0–100).', }, }, required: ['duration'], }, }, { name: 'cursor_position', description: 'Get the current mouse cursor position. Returns image-pixel coordinates relative to the most recent screenshot, or logical points if no screenshot has been taken.', inputSchema: { type: 'object' as const, properties: {}, required: [], }, }, { name: 'hold_key', description: `Press and hold a key or key combination for the specified duration, then release. ${FRONTMOST_GATE_DESC} ` + 'System-level combos require the `systemKeyCombos` grant.', inputSchema: { type: 'object' as const, properties: { text: { type: 'string', description: 'Key or chord to hold, e.g. "space", "shift+down".', }, duration: { type: 'number', description: 'Duration in seconds (0–100).', }, }, required: ['text', 'duration'], }, }, { name: 'left_mouse_down', description: `Press the left mouse button at the current cursor position and leave it held. ${FRONTMOST_GATE_DESC} ` + 'Use mouse_move first to position the cursor. Call left_mouse_up to release. Errors if the button is already held.', inputSchema: { type: 'object' as const, properties: {}, required: [], }, }, { name: 'left_mouse_up', description: `Release the left mouse button at the current cursor position. ${FRONTMOST_GATE_DESC} ` + 'Pairs with left_mouse_down. Safe to call even if the button is not currently held.', inputSchema: { type: 'object' as const, properties: {}, required: [], }, }, { name: 'computer_batch', description: 'Execute a sequence of actions in ONE tool call. Each individual tool call requires a model→API round trip (seconds); ' + 'batching a predictable sequence eliminates all but one. Use this whenever you can predict the outcome of several actions ahead — ' + 'e.g. click a field, type into it, press Return. Actions execute sequentially and stop on the first error. ' + `${FRONTMOST_GATE_DESC} The frontmost check runs before EACH action inside the batch — if an action opens a non-allowed app, the next action's gate fires and the batch stops there. ` + 'Mid-batch screenshot actions are allowed for inspection but coordinates in subsequent clicks always refer to the PRE-BATCH full-screen screenshot.', inputSchema: { type: 'object' as const, properties: { actions: { type: 'array', minItems: 1, items: BATCH_ACTION_ITEM_SCHEMA, description: 'List of actions. Example: [{"action":"left_click","coordinate":[100,200]},{"action":"type","text":"hello"},{"action":"key","text":"Return"}]', }, }, required: ['actions'], }, }, ...(caps.teachMode ? buildTeachTools(coord, installedAppsHint) : []), ] } /** * Teach-mode tools. Split out so the spread above stays a single expression; * takes `coord` so `teach_step.anchor`'s description uses the same * frozen coordinate-mode phrasing as click coords, and `installedAppsHint` * so `request_teach_access.apps` gets the same enumeration as * `request_access.apps` (same resolution path → same hint). */ function buildTeachTools( coord: { x: string; y: string }, installedAppsHint: string, ): Tool[] { // Shared between teach_step (top-level) and teach_batch (inside steps[] // items). Depends on coord, so it lives inside this factory. const teachStepProperties = { explanation: { type: 'string', description: 'Tooltip body text. Explain what the user is looking at and why it matters. ' + 'This is the ONLY place the user sees your words — be complete but concise.', }, next_preview: { type: 'string', description: 'One line describing exactly what will happen when the user clicks Next. ' + 'Example: "Next: I\'ll click Create Bucket and type the name." ' + 'Shown below the explanation in a smaller font.', }, anchor: { type: 'array', items: { type: 'number' }, minItems: 2, maxItems: 2, description: `(x, y) — where the tooltip arrow points. ${coord.x} ` + 'Omit to center the tooltip with no arrow (for general-context steps).', }, actions: { type: 'array', // Empty allowed — "read this, click Next" steps. items: BATCH_ACTION_ITEM_SCHEMA, description: 'Actions to execute when the user clicks Next. Same item schema as computer_batch.actions. ' + 'Empty array is valid for purely explanatory steps. Actions run sequentially and stop on first error.', }, } as const return [ { name: 'request_teach_access', description: 'Request permission to guide the user through a task step-by-step with on-screen tooltips. ' + 'Use this INSTEAD OF request_access when the user wants to LEARN how to do something ' + '(phrases like "teach me", "walk me through", "show me how", "help me learn"). ' + 'On approval the main Claude window hides and a fullscreen tooltip overlay appears. ' + 'You then call teach_step repeatedly; each call shows one tooltip and waits for the user to click Next. ' + 'Same app-allowlist semantics as request_access, but no clipboard/system-key flags. ' + 'Teach mode ends automatically when your turn ends.', inputSchema: { type: 'object' as const, properties: { apps: { type: 'array', items: { type: 'string' }, description: 'Application display names (e.g. "Slack", "Calendar") or bundle identifiers. Resolved case-insensitively against installed apps.' + installedAppsHint, }, reason: { type: 'string', description: 'What you will be teaching. Shown in the approval dialog as "Claude wants to guide you through {reason}". Keep it short and task-focused.', }, }, required: ['apps', 'reason'], }, }, { name: 'teach_step', description: 'Show one guided-tour tooltip and wait for the user to click Next. On Next, execute the actions, ' + 'take a fresh screenshot, and return both — you do NOT need a separate screenshot call between steps. ' + 'The returned image shows the state after your actions ran; anchor the next teach_step against it. ' + 'IMPORTANT — the user only sees the tooltip during teach mode. Put ALL narration in `explanation`. ' + 'Text you emit outside teach_step calls is NOT visible until teach mode ends. ' + "Pack as many actions as possible into each step's `actions` array — the user waits through " + 'the whole round trip between clicks, so one step that fills a form beats five steps that fill one field each. ' + 'Returns {exited:true} if the user clicks Exit — do not call teach_step again after that. ' + 'Take an initial screenshot before your FIRST teach_step to anchor it.', inputSchema: { type: 'object' as const, properties: teachStepProperties, required: ['explanation', 'next_preview', 'actions'], }, }, { name: 'teach_batch', description: 'Queue multiple teach steps in one tool call. Parallels computer_batch: ' + 'N steps → one model↔API round trip instead of N. Each step still shows a tooltip ' + "and waits for the user's Next click, but YOU aren't waiting for a round trip between steps. " + 'You can call teach_batch multiple times in one tour — treat each batch as one predictable ' + 'SEGMENT (typically: all the steps on one page). The returned screenshot shows the state ' + "after the batch's final actions; anchor the NEXT teach_batch against it. " + 'WITHIN a batch, all anchors and click coordinates refer to the PRE-BATCH screenshot ' + '(same invariant as computer_batch) — for steps 2+ in a batch, either omit anchor ' + "(centered tooltip) or target elements you know won't have moved. " + 'Good pattern: batch 5 tooltips on page A (last step navigates) → read returned screenshot → ' + 'batch 3 tooltips on page B → done. ' + 'Returns {exited:true, stepsCompleted:N} if the user clicks Exit — do NOT call again after that; ' + '{stepsCompleted, stepFailed, ...} if an action errors mid-batch; ' + 'otherwise {stepsCompleted, results:[...]} plus a final screenshot. ' + 'Fall back to individual teach_step calls when you need to react to each intermediate screenshot.', inputSchema: { type: 'object' as const, properties: { steps: { type: 'array', minItems: 1, items: { type: 'object', properties: teachStepProperties, required: ['explanation', 'next_preview', 'actions'], }, description: 'Ordered steps. Validated upfront — a typo in step 5 errors before any tooltip shows.', }, }, required: ['steps'], }, }, ] }