Is LoopCraft free to use?

Yes. LoopCraft offers a free tier for designing and exporting AI agent loop patterns. A Pro plan is available for advanced features.

What is Loop Engineering?

Loop Engineering is designing the control flow for AI agents: how they plan actions, observe results, and iterate. LoopCraft includes 11 pre-built patterns based on research from Anthropic, OpenAI, and others — including ReAct, Plan-Execute, Evaluator-Optimizer, Multi-Agent, and more. Design loops visually and export to LangGraph, OpenAI Agents SDK, AutoGen, or CrewAI.

Which frameworks can I export to?

LoopCraft exports to LangGraph (Python), OpenAI Agents SDK (TypeScript), AutoGen (Python), and CrewAI (Python). Each export produces working code you can run directly in your project.

Do I need to write code?

No. LoopCraft is a visual builder — you design loop patterns with a drag-and-drop interface and configure nodes without writing code. Code export to LangGraph, OpenAI SDK, AutoGen, and CrewAI is generated automatically and is optional.

What loop patterns are supported?

LoopCraft supports 11 agent loop patterns: ReAct (think-act-observe cycle), Prompt Chaining (sequential steps with quality gates), Routing (classify and direct inputs), Parallel Sectioning (independent subtasks in parallel), Parallel Voting (multiple runs for confidence), Orchestrator-Workers (dynamic task decomposition), Evaluator-Optimizer (generate-evaluate loop), Plan-and-Execute (plan then execute with replanning), ReWOO (variable passing between tasks), LLM Compiler (DAG-based parallel execution, 3.6x speedup), and Multi-Agent (collaborative agents with roles).

LoopCraft adds AI stem separation for music loops (2026-08-15)

Starting 2026-08-15, LoopCraft introduces AI stem separation for music loops and samples. Drop any mixed audio — a drum break, a sampled chord progression, or a field recording with several instruments playing at once — into the stem panel, and the engine splits it into clean, time-aligned stems: drums, bass, vocals, and other melodic content. Three separation modes are available. Two-stem mode isolates vocals from the instrumental in seconds, ideal for acapella extraction. Four-stem mode splits a loop into drums, bass, vocals, and other, the classic layout for remix work. Six-stem mode goes further, separating piano and other harmonic instruments from guitars and synths so each layer can be processed on its own. Because stems keep the loop's original tempo, key, and grid position, you can rebuild the arrangement immediately: mute the drums and layer your own groove, run only the bass stem through your effect chain, or swap the melodic layer of a loop while keeping its rhythm section. Every stem stays locked to the original timeline, so chops and rearrangements remain sample-accurate. Stem separation pairs naturally with the AI noise reduction we released earlier this month — separate first, then clean each stem individually for the best possible result. Processing runs locally on your machine, so your audio never leaves your computer. A typical four-minute loop is separated into four stems in under a minute on a modern laptop. AI stem separation is available on all plans. Try it at https://getloopcraft.com. Feedback: sapsap@qq.com.