pi-context-preview

A Pi extension that gives a visual preview of how the context window is utilized, inspired by Claude Code's /context command. Model-agnostic, works with any provider Pi supports.

Install

pi install npm:pi-context-preview

Or add to ~/.pi/agent/settings.json:

{
  "packages": ["npm:pi-context-preview@latest"]
}

For development:

pi -e ./extensions/index.ts

Usage

/context           # default: grid + legend + message breakdown
/context verbose   # expand tool calls and results per tool name

How it works

Token counts are estimated using a character-ratio heuristic (chars / 4) applied to each part of the last provider request payload. The total token count is always sourced from Pi's own API-accurate tracking; the per-category breakdown is then scaled proportionally to match that total.

Categories

Symbol	Meaning
⛁	Used — segment ≥ 70% of its grid allocation
⛀	Used — segment < 70% of its grid allocation
⛝	Autocompact buffer reserve
⛶	Free space

Grid dimensions: 10 × 10 for ≤ 200k models · 20 × 10 for 1M+ models.

Update

pi update npm:pi-context-preview

License

MIT