Plasma open-sources Fractal, a local recursive agent tree for complex coding tasks
rohanpaul_ai · x · 2026-07-22
Plasma open-sourced Fractal, a local, Apache-2.0 command-line tool that turns a single Claude Code or Codex session into a persistent tree of agents.
What it does
- Each node gets its own git worktree, memory, and lifecycle.
- Agents can spawn child agents for narrower subproblems, so recursive loops can keep working as the task branches out.
- The system is designed for large tasks that do not fit neatly into one context window or one shared workspace.
Safety and observability
- A single budget is set at the root and allocated down the tree; depth, fan-out, iterations, and wall-clock time can all be capped.
- Runs, costs, and signals are logged to a local SQLite database that can be watched live.
- Every iteration ends in a git commit, so the run is readable as normal git history.
Runtime details
- No hosted backend.
- Built on git worktrees, tmux, and a local SQLite DB.
- Works with Claude Code, Codex, Grok Build, OpenCode, and Oh My Pi.
Related event: Plasma AI Open-Sources Fractal for Local Recursive Agent Trees(8 posts)→
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