pi-toolkit

Personal Pi toolkit with the /todos, /btw, and /cache_export extensions, bundled agent skills including Chrome/Chromium automation, the Night Owl theme, and the pi-worktree CLI.

Install

Install the root package to enable the toolkit extensions globally:

pi install npm:@maxiaochao/pi-toolkit

The package also provides the /btw side-chat extension, the web-browser and chrome-cdp skills for Chrome/Chromium CDP automation, and the nightowl theme. On npm installation, the postinstall hook selects nightowl only when no theme has been configured yet; an existing Pi theme setting is preserved.

The package postinstall hook synchronizes the bundled global instructions to:

~/.pi/agent/AGENTS.md

It also selects nightowl as the default theme only when ~/.pi/agent/settings.json does not already contain a theme. To switch manually, use /settings or:

pi --use-theme nightowl

An installed package can expose a theme through pi.themes, but Pi has no package-manifest field for a default theme, so the guarded postinstall step is used for the npm install case.

When global/AGENTS.md changes, publish a new @maxiaochao/pi-toolkit version and update installed copies:

pi update npm:@maxiaochao/pi-toolkit

To synchronize the file directly from a checkout instead:

bash scripts/install.sh

The /btw side chat is a separate agent session. It can inspect the main conversation and repository, and its thread stays out of the main context until you close it and choose to inject a summary. Use /btw to open it or /btw <question> to ask directly. While the BTW overlay has focus, use Up / Down to scroll its transcript one line at a time and PageUp / PageDown to move by one transcript page.

Use /cache_export [path] to write an interactive per-request cache dashboard. It defaults to the latest Context segment for current-state diagnosis, and the View selector can show any earlier segment or all session history. Compaction and model changes both break context charts into segments; cache-hit accumulation also resets at model changes, while TTL and other inferred interruptions remain diagnostic events rather than segment boundaries.

The bundled nightowl theme is available to Pi through the package manifest and is selected automatically on npm installation only when no theme is already configured.

pi-worktree CLI

The package also ships a standalone shell command, pi-worktree, that wraps Git worktree creation and Pi launch into one step. On installation (Unix-like systems) the postinstall hook copies it to ~/.local/bin/pi-worktree and installs bash completion to ~/.local/share/bash-completion/completions/pi-worktree (no .bashrc edits needed).

pi-worktree start feat-ui  # create/reuse .worktrees/feat-ui, branch feat-ui, launch pi inside
pi-worktree list           # list worktrees (main checkout marked "main checkout")
pi-worktree info feat-ui   # base commit, ahead/behind main, unique commits
pi-worktree out            # open a shell in the main checkout (for merging)
pi-worktree remove feat-ui # remove the worktree (refuses unmerged branches)
pi-worktree prune          # drop stale registrations for manually deleted dirs

Typical loop: pi-worktree start <name> to start (Tab completes existing worktree names), commit inside Pi, pi-worktree out + git merge <name> to land the work, pi-worktree remove <name> to clean up. New branches are created from the branch you're currently on (or HEAD when detached), and the base commit is recorded in branch.<name>.base config so info can always tell you where the branch came from. Bash completion covers subcommands and existing worktree names (pi-worktree feat<Tab>).

The bundled web-browser skill provides reusable scripts for starting Chrome/Chromium with remote debugging, navigating tabs, evaluating JavaScript, emulating devices, taking screenshots, dismissing cookie dialogs, and inspecting browser logs. It auto-detects common Chrome/Chromium installations on macOS and Linux, including Windows Chrome when Pi runs under WSL; set BROWSER_BIN when the binary is elsewhere.

The browser skill can be loaded explicitly with /skill:web-browser. Its scripts are available relative to the skill directory, for example:

node skills/web-browser/scripts/start.js --headless
node skills/web-browser/scripts/nav.js https://example.com

The bundled chrome-cdp skill (derived from pasky/chrome-cdp-skill, MIT) complements web-browser: instead of launching an isolated browser, it attaches to a Chrome session that already runs with remote debugging (port pre-allocated at launch, or the chrome://inspect/#remote-debugging toggle). It is a zero-dependency CLI (scripts/cdp.mjs, Node 22+) with per-tab daemons so Chrome's "Allow debugging" modal fires once:

export CDP_PORT_FILE="/mnt/c/Users/<you>/AppData/Local/Google/Chrome/CDP-Profile/DevToolsActivePort"
node skills/chrome-cdp/scripts/cdp.mjs list          # list open tabs → target prefix
node skills/chrome-cdp/scripts/cdp.mjs snap <target> # accessibility tree
node skills/chrome-cdp/scripts/cdp.mjs eval <target> 'document.title'

Note: Chrome does not always write the DevToolsActivePort file (e.g. --remote-debugging-port launches on Chrome 152); in that case synthesize one from GET http://127.0.0.1:<port>/json/version — first line the port, second line the path of webSocketDebuggerUrl. WSL auto-discovery of Windows Chrome profiles is not built in; set CDP_PORT_FILE as above.

Tiny Subagent

The tiny subagent is a separate npm package. Install it independently when you want the tiny_subagents tool:

pi install npm:@maxiaochao/pi-tiny-subagent

It is not included in the root package's pi.extensions list. The two packages have independent versions, release tags, and update commands:

pi update npm:@maxiaochao/pi-toolkit
pi update npm:@maxiaochao/pi-tiny-subagent

See packages/tiny-subagent/README.md for personas, model selection, child isolation, live transcript rendering, and diagnostics.

Codex Edit

The Codex edit package is a separate npm package. Install it when you want GPT/Codex models to use the freeform apply_patch protocol while other models keep Pi's native edit tool:

pi install npm:@maxiaochao/pi-codex-edit

It includes the extension implementation plus the benchmark summary and interactive architecture explainer. Its versions, release workflow, and tag are independent from the root package and tiny subagent:

pi update npm:@maxiaochao/pi-codex-edit

See packages/codex-edit/README.md for the routing rules and packages/codex-edit/summary.md for the measured tradeoffs.

Development

Repository development and release rules are documented in AGENTS.md.