pi-cyber-ui

A standalone Pi package that bundles a cyber-inspired editor, compact footer, lightweight working indicator, optional compact tool rendering, and a matching dark theme.

The visual direction was inspired by Tokyo Night, but this is a new project with its own palette, naming, and packaging structure.

The extension is split into small modules for easier maintenance:

• editor.ts wires editor/session events
• cyber-editor.ts owns the prompt shell, prompt marker, dynamic border, and optional session name label
• editor-state.ts handles session state and token accounting
• working.ts renders prompt progress and idle summaries
• footer.ts renders cwd, git dirty state, model, thinking level, and context usage
• profile.ts resolves native/full, registers /cyber-profile, and persists the global user profile
• tool-render.ts re-registers built-in tools with compact cyber renderers while delegating execution to Pi built-ins; activated only in full profile
• read-compact.ts preserves Pi read compact compatibility for skills and agent resource files in full profile
• tool-registry.ts tracks tool lifecycle, durations, and per-turn tallies in full profile
• path-utils.ts contains shared path shortening/styling helpers
• token-usage.ts contains protocol-aware exact/estimated token helpers

Contents

• themes/cyber-ui-dark.json — Pi theme
• extensions/pi-cyber-ui/index.ts — extension entrypoint
• extensions/pi-cyber-ui/profile.ts — profile resolution, /cyber-profile, and global persistence
• extensions/pi-cyber-ui/editor.ts — editor/session event wiring
• extensions/pi-cyber-ui/editor-state.ts — editor/session state
• extensions/pi-cyber-ui/cyber-editor.ts — Cyber editor shell
• extensions/pi-cyber-ui/token-usage.ts — token usage helpers
• extensions/pi-cyber-ui/footer.ts — compact footer
• extensions/pi-cyber-ui/working.ts — working line and idle summary widget
• extensions/pi-cyber-ui/tool-render.ts — compact built-in tool renderer
• extensions/pi-cyber-ui/read-compact.ts — Pi read compact compatibility layer
• extensions/pi-cyber-ui/tool-registry.ts — tool timing/tally registry
• extensions/pi-cyber-ui/path-utils.ts — path display helpers

Local development

cd ~/Developer/pi-cyber-ui
npm install
npm run typecheck

Using with Pi

Install from the remote repository:

pi install git:github.com/22GNUs/pi-cyber-ui.git

For local development, you can also install from a local checkout path:

pi install /path/to/pi-cyber-ui

The package is structured to be publishable later via git or npm without changing the directory layout.

Profiles

pi-cyber-ui defaults to the low-intrusion native profile:

pi

Switch profiles with the built-in command:

/cyber-profile native
/cyber-profile full
/cyber-profile toggle
/cyber-profile status

The command persists the choice globally to ~/.pi/agent/pi-cyber-ui.json and automatically reloads Pi so the new profile takes effect.

You can also use an environment variable as a temporary override:

PI_CYBER_UI_PROFILE=full pi

Available profiles:

Profile	Default	Tool overrides	Use case
native	✅	none	Keeps Pi native tool definitions/renderers for maximum compatibility with Pi defaults and other extensions. Keeps theme, editor, footer, and working indicator. Tool colors come from theme tokens only.
full	—	read, bash, edit, write, grep, find, ls	Enables compact tool rows, Nerd Font tool icons, per-tool header colors, summaries, durations, and compact read affordances. May conflict with other extensions that register the same tool names.

Enable the full compact tool rendering explicitly:

/cyber-profile full

Unknown persisted or environment profile values fall back to native. If PI_CYBER_UI_PROFILE is set by your shell, it overrides the persisted config on future launches.

When it is published, install it with one of these forms:

pi install npm:pi-cyber-ui
# or
pi install git:github.com/22GNUs/pi-cyber-ui.git

Architecture contract

This package is not a full tool implementation fork. Tool rendering is profile-gated progressive enhancement.

In the default native profile, pi-cyber-ui does not re-register any Pi built-in tools. This preserves Pi native tool definitions/renderers and avoids conflicts with other extensions. Tool-level coloring is limited to theme tokens such as toolTitle, toolOutput, toolPendingBg, toolSuccessBg, toolErrorBg, and diff colors.

In the explicit full profile, built-in tools are re-registered to control the UI, but execution and prompt metadata continue to come from Pi's native tool definitions.

• Inherited from Pi native tools in full: execute, parameter schemas, descriptions, prompt snippets, and prompt guidelines.
• Customized by this package in full: renderCall, renderResult, compact summaries, duration/spinner display, and cyber color semantics.
• Consequence: Pi execution-layer improvements usually apply automatically; Pi native renderer improvements do not. Renderer-specific features must be reviewed and ported when Pi changes.
• Compatibility rule: preserve known Pi compact read affordances where they affect semantics, especially SKILL.md as [skill] name and agent resource files (AGENTS.md / CLAUDE.md) as compact resource reads.
• Maintenance rule: after upgrading @earendil-works/pi-coding-agent, review Pi's built-in renderers, especially core/tools/read, before publishing.

Commands

• /cyber-profile [native|full|toggle|status] — show or switch the global pi-cyber-ui profile. Changes are persisted and followed by an automatic reload.
• Pi's built-in /name <name> sets the session display name. When present, pi-cyber-ui shows it in the editor's top-right border as ⟦ name ⟧.

Notes

• Package name: pi-cyber-ui
• Theme name: cyber-ui-dark
• Extension entrypoint: extensions/pi-cyber-ui/index.ts
• Exact streaming usage is protocol-aware; Anthropic Messages API can surface cumulative in-flight usage, while other APIs fall back to estimates
• Working indicator uses Pi's official ctx.ui.setWorkingIndicator() / ctx.ui.setWorkingMessage() APIs
• Default profile is native, which does not re-register built-in tools
• Use /cyber-profile full or PI_CYBER_UI_PROFILE=full to re-register built-in tools for compact rendering while preserving their original execution behavior and prompt metadata
• Theme format follows the official Pi theme schema