/compact is the naive solution. Accordion is the intelligent one.

See everything your AI agent holds in context — and fold it like an accordion instead.

Accordion is a pi extension that shows you your agent's entire context window at a glance and lets you manage it — manually or with intelligence through a conductor.

This package ships the pi extension (the live link that streams context and applies your fold plan) plus a browser-served UI, so you can run Accordion with pi install alone — no Rust, no desktop app required.

Install

pi install npm:@a-fig/accordion

That adds the package to ~/.pi/agent/settings.json. Restart pi, then in any project:

/accordion

The extension HTTP-serves the Accordion UI on a local ephemeral port and prints the URL (also opens it). The page auto-connects to the running session. Folding is off by default — flip the Folding toggle in the header to start steering what the agent sees.

Single session, browser only. This package serves the UI in your browser for the current pi session. For multi-session discovery, conductors that need local model resources, and the native window, build the desktop app from source.

How it works

The context Map is the whole window at a glance: one square per block, sized by token weight (a dice face, 1–6), colored by kind — user messages, assistant responses, thinking, tool calls, and tool results each get their own hue. Bright = live; recessed and hatched = folded.

Three hands share the controls:

• You — fold, unfold, pin, and peek by hand. Your overrides always win.
• The agent — reaches back to unfold or pin context it needs mid-task, or recall a folded block as a tool result (like read_file) without changing what's standing in context.
• The Conductor — an automatic strategy that, between turns, folds what's gone cold and unfolds what's becoming relevant. Collaborative by default; an exclusive conductor you approve can take over specific controls, and detach is always your kill switch.

Every block is Full, Folded (shown as a short tagged summary), or Pinned (locked open). Folds are content substitution, never removal — provider-safe and fully reversible. The most recent ~20k tokens are a protected working tail the agent reasons over at full fidelity.

Skills included

This package registers two pi skills the agent uses to interact with folded context:

• accordion-context-folding — the unfold tool: restore a folded block into standing context (sticky, attributed to the agent).
• accordion-context-recall — the recall tool: read a folded block's full content as a tool result without mutating the view, like read_file. Never lockable.

What works today

• ✅ Browser-served UI — no desktop app required
• ✅ Live link to a running pi session
• ✅ Opt-in live steering — apply your fold plan to what the agent is shown
• ✅ Reversible, provider-safe folding with deterministic {#code FOLDED} digests
• ✅ Agent-driven unfold + recall, involvement locks
• ✅ The Conductor — automatic fold/unfold between turns
• ✅ LLM-generated summaries, computed once and cached

Links

• Source & full docs: github.com/a-Fig/Accordion
• Vision: VISION.md
• pi (the harness): github.com/earendil-works/pi

🏆  Built at the AI Hackathon 2026 @ UC Berkeley — a winning project.

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