Processes Extension

Manage background processes from Pi. Start long-running commands (dev servers, build watchers, log tailers) without blocking the conversation.

Demo

Installation

pi install npm:@aliou/pi-processes

Or from git:

pi install git:github.com/aliou/pi-processes

Features

• Tool: process with actions: start, list, output, logs, kill, clear
• Commands: /ps (interactive panel), /ps:pin (pin dock to process), /ps:logs (open log overlay), /ps:kill (kill process), /ps:clear (clear finished), /ps:dock (control dock visibility), /ps:settings
• Log Dock: Unified view for all process logs with color-coded prefixes
• Follow Mode: Automatically shows dock when processes start (enabled by default)
• Focus Mode: Filter to a single process's logs
• Auto-cleanup on session exit
• File-based logging (logs written to temp files, not memory)
• Friendly process names (auto-inferred or custom)

Usage

Tool (for agent)

process start "pnpm dev" name="backend-dev"
process start "pnpm build" name="build" alertOnSuccess=true
process start "pnpm test" alertOnFailure=true
process list
process output id="backend"
process logs id="proc_1"
process kill id="backend"
process clear

Alert parameters (for start action):

• alertOnSuccess (default: false) - Get a turn to react when process completes successfully. Use for builds/tests where you need confirmation.
• alertOnFailure (default: true) - Get a turn to react when process fails/crashes. Use to be alerted of unexpected failures.
• alertOnKill (default: false) - Get a turn to react if killed by external signal. Note: killing via tool never triggers a turn.

Important: You don't need to poll or wait for processes. Notifications arrive automatically based on your preferences. Start processes and continue with other work - you'll be informed if something requires attention.

Note: User always sees process updates in the UI. The alert flags control whether the agent gets a turn to react (e.g. check results, fix code, restart).

Commands (interactive)

/ps - Open full panel

View and manage all processes in an interactive panel:

• j/k - select process
• J/K - scroll logs
• enter - focus on selected process
• x - kill selected process
• c - clear finished processes
• q - quit

/ps:pin [id|name] - Pin dock to a process

Pin the dock to a specific process. Opens the dock automatically if hidden.

Without arguments, shows a picker to select a process.

/ps:logs [id|name] - Open log overlay

Open the interactive log viewer overlay (search, scroll, stream filter).

/ps:kill [id|name] - Kill a process

Kill a running process. Without arguments, shows a picker.

/ps:clear - Clear finished

Remove all finished processes from the list.

/ps:dock [show|hide|toggle] - Control dock

Control dock visibility. Without arguments, it toggles state. With arguments:

• show - Show dock (open)
• hide - Hide dock
• toggle - Cycle dock visibility state

Log Dock

The log dock shows interleaved logs from all processes with color-coded prefixes:

[dev]   GET /api/users 200 45ms    (cyan)
[test]  Running auth.test.ts...    (yellow)
[dev]   POST /api/auth 200 12ms
[test]  ✓ login flow
...

Dock Keyboard Shortcuts (when dock is open):

• h - focus previous process
• l - focus next process
• f - toggle focus mode (filter to single process)
• x - kill focused process
• q - close/unfocus dock
• Follow mode toggle is only available via settings (/ps:settings)

Dock States:

• collapsed (1-2 lines): Summary + last log line
• open (8-12 lines): Full interleaved or focused logs

Deprecated Commands (backward compatible)

The following commands are deprecated but still work with a warning:

• /process:list → Use /ps instead
• /process:stream → Use /ps:pin instead
• /process:logs → Use /ps:logs instead
• /process:kill → Use /ps:kill instead
• /process:clear → Use /ps:clear instead

Settings

Configure via /ps:settings or ~/.pi/agent/extensions/processes.json:

• Widget: Dock default state, dock height
• Follow Mode: Enable by default, auto-hide on finish
• Process List: Max visible processes, max preview lines
• Output Limits: Default tail lines, max output lines
• Execution: Shell path override
• Interception: Block background commands

Test Scripts

Test scripts in src/test/ directory:

./src/test/test-output.sh          # Continuous output (80 chars/sec)
./src/test/test-exit-success.sh 5  # Exits successfully after 5s
./src/test/test-exit-failure.sh 5  # Exits with code 1 after 5s
./src/test/test-exit-crash.sh 5    # Exits with code 137 after 5s

Future Improvements

• [ ] Configurable keybindings UI: Allow editing keybindings in settings panel
• [ ] Process filtering: Filter by name/status in full panel
• [ ] Log search: Search within logs (Ctrl+F in dock)
• [ ] Copy log path: Keyboard shortcut to copy log file path
• [ ] Open in editor: Keyboard shortcut to open logs in $EDITOR
• [ ] Sound notifications: Play sound on process completion