Plasma AI Open-Sources Fractal for Local Recursive Agent Trees

Plasma AI has officially open-sourced the CLI tool Fractal under the Apache 2.0 license. Designed to solve the limitation of complex programming tasks exceeding a single agent's context window, it transforms a Claude Code or Codex session into a continuously expanding recursive agent tree, tackling high-difficulty development needs through hierarchical task decomposition.

Confirmed

Core Mechanism & Constraints

Each node in Fractal operates with its own git branch, worktree, memory, and lifecycle, running a five-step loop: Prepare, Plan, Execute, Review, and Commit. When spawning child nodes, the parent node allocates budgets layer by layer. The system uses a unified root budget to limit overall execution and enforces hard limits on depth, branching factor, iteration count, and wall-clock time.

Technical Architecture

The tool runs entirely locally without any special hosted runtime or "magic" backend. Its underlying coordination, persistence, and terminal session management rely exclusively on standard local tools: git worktrees, tmux sessions, and a local SQLite database.

Why it matters

For scenarios like large-scale code migrations or complex audits that can easily cause a single coding agent to lose control, Fractal offers a structured solution. It demonstrates how to safely and effectively decompose and orchestrate massive automated coding tasks using purely local, standard development toolchains.

2026-07-22 ~ 2026-07-22 · 8 related posts

Primary sources

Plasma opens Fractal, a local agent-tree CLI for complex coding work — rohanpaul_ai · 2026-07-22 09:27 (UTC+08:00)
Plasma open-sources Fractal, a local recursive agent tree for complex coding tasks — rohanpaul_ai · 2026-07-22 09:27 (UTC+08:00)
Fractal runs entirely on git worktrees, tmux, and a local SQLite database — rohanpaul_ai · 2026-07-22 09:27 (UTC+08:00)

Plasma AI Open-Sources Fractal: A Tool for Hierarchical Agent Loops — rohanpaul_ai · 2026-07-22
[source] Plasma open-sources Fractal, a local recursive agent tree for complex coding tasks — rohanpaul_ai · 2026-07-22
Fractal gives each node its own branch, lifecycle, and five-step agent loop — rohanpaul_ai · 2026-07-22
Fractal adds root budgets, Markdown memory files, and hard caps for recursive agents — rohanpaul_ai · 2026-07-22
[source] Fractal runs entirely on git worktrees, tmux, and a local SQLite database — rohanpaul_ai · 2026-07-22
A local AI coding project uses git worktrees, tmux, and SQLite instead of a magic runtime — rohanpaul_ai · 2026-07-22
Plasma open-sources Fractal for hierarchical coding agents with Git-backed worktrees — rohanpaul_ai · 2026-07-22

1 near-duplicate retellings: rohanpaul_ai