pi-extensions

Minimal reference extensions for pi-coding-agent.

Quick Setup

Install the package:

pi install npm:pi-hooks
pi config  # enable/disable extensions

Dependencies are installed automatically during pi install.

To pull updates later:

pi update git:github.com/prateekmedia/pi-hooks

Included Extensions

checkpoint/

Git-based checkpoint system for restoring code state when forking conversations.

• Captures repo state at the start of every turn (tracked, staged, and untracked files)
• Stores checkpoints as Git refs for persistence across sessions
• Offers restore options: files + conversation, conversation only, or files only
• Automatically saves current state before restoring past snapshots

lsp/

Language Server Protocol integration (hook + tool).

The package exports two extensions via package.json:

• lsp-hook.ts - Auto-diagnostics (default at agent end)
• lsp-tool.ts - On-demand LSP queries

Hook (auto-diagnostics):

• Default: runs diagnostics once at agent end for touched files
• Optional: run after each write/edit
• Configure via /lsp to switch to per-edit or disabled
• Supports web, Flutter, and common backend stacks
• Manages LSP server lifecycles per project root

Tool (on-demand queries):

• Definitions, references, hover, symbols, diagnostics, signatures
• Query by symbol name or line/column position

permission/

Layered permission control with four permission levels:

| Level | Description | What's allowed | |---------|-----------------------|-----------------------------------------------------| | Minimal | Read-only mode | Only read commands (ls, cat, git status, etc.) | | Low | File edits | + write/edit files | | Medium | Dev commands | + npm, git, make, cargo, etc. | | High | Full access | Everything (dangerous commands still prompt) |

On first run you pick a level; it's saved globally. Use /permission to change levels and /permission-mode to switch between ask/block prompts.

ralph-loop/

Looped subagent execution via the ralph_loop tool.

• Runs single or chain subagent tasks until a condition returns false
• Takes a prompt and exit condition (exit condition optional)
• Can supply max iterations and minimum delay between each
• Optionally supply model and thinking
• Supports conditionCommand, maxIterations, and sleepMs controls
• Interactive steering/follow-up + pause/resume/stop commands in UI mode
• Defaults to the worker agent and the last user prompt when omitted
• No npm install required

Example prompt: "Use ralph loop to check the current time five times, sleeping 1s between iterations."

repeat/

Repeat past tool calls (bash/edit/write) from the current branch.

• /repeat shows a picker of recent bash/edit/write tool calls with type-to-search filtering
• Bash entries load as !command in the editor for tweak + run
• Write entries open a temp editor (if $EDITOR is set) and apply only when you save
• Edit entries can repeat the edit (may fail) or open $EDITOR at the first changed line; repeat uses a temp editor and applies on save

token-rate/

Shows the average output tokens per second (TPS) in the footer status line.

Usage

1. Install the package and enable extensions:

   pi install npm:pi-hooks
   pi config

2. See inline comments in each extension for configuration options.

Testing

cd lsp && npm install
cd ../permission && npm install
cd ../checkpoint && npm test
cd ../lsp && npm run test:all
cd ../permission && npm test

License

MIT