Skribbl skribbl.devCan AI replace Skribbl?
The canvas is the easy half. React Flow plus xterm.js plus node-pty gets you panning, zooming and half a dozen live agent terminals in a weekend, and it is a genuinely nice way to watch a fleet work. The gaps are all in the boring layer underneath: knowing when an agent is actually blocked on you rather than just quiet, keeping sessions alive across a restart or a crash, and counting tokens accurately enough that the number can be trusted. Each of those is days of work on its own, and the weekend build reads as finished until the first agent silently dies behind a tab you were not looking at.
Replacing a paid app means you set it up and keep it running: hosting, updates and backups can be on you. What you give up.
01What it costs
Checked Aug 14, 2026 · source: skribbl.dev.
| Plan | Monthly | Billed yearly | What you get |
|---|---|---|---|
| Founding Infinity | $29 | $8.25/mo | 3 concurrent agents; founding-plan access while licenses remain available. |
Hidden costs: The plan does not include Claude Code, model API or other agent-provider subscriptions; the trial requires a card from day 2 and charges on day 15 unless cancelled.
02Could AI build it for you?
The core job: Spawn real shells as draggable nodes on a pan/zoom canvas, run a coding agent in each one, and watch several of them work side by side.
What a working version needs:
- Node 20 and native build tools for node-pty
- A coding agent CLI already installed and authenticated
- tmux, if you want sessions to survive a restart
An honest kinda · the canvas is a weekend, the process supervision under it is not.
03What you'd give up
- hook-driven agent status, so a blocked agent looks the same as an idle one
- session survival across restarts and crashes
- an accurate token meter, cache reads price nothing like input tokens
- a signed and notarized Mac build, so Gatekeeper blocks what you ship to anyone else
Not for the canvas. For the layer that keeps twelve child processes honest: status that comes from the agent itself instead of scraped output, sessions that come back after a reboot, and a spend number accurate enough to act on before the bill arrives.
04The build prompt
The complete build prompt, plus 11 step-by-step prompts from research to launch, a design system file, a page-by-page spec, the data model and a launch checklist.
Get the Build Kit · $9 →One-time payment. Delivered on screen and by email.
05Free open-source starting points
- claude-squad: open-source terminal manager for multiple agents in tmux and git worktrees
- Crystal: open-source desktop app running parallel agent sessions in worktrees
- vibe-kanban: open-source board for queueing and reviewing coding agent tasks
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The visible AI terminal loop is buildable, but a credible replacement needs more than the first screen. Warp earns its keep through model, context, integration, so expect a weekend or multi-day build and a narrower personal scope.
Prices change; confirm on the vendor's site before you decide.
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