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 webhook triggers to start loops from any HTTP event (2026-08-20)

Starting 2026-08-20, LoopCraft ships webhook triggers. Every loop you build now gets its own HTTPS endpoint: POST a JSON payload to it, and the loop starts with that payload as the input of its first node. When the run finishes, the final node's output is returned as the HTTP response — synchronously for fast loops, or as a callback to a URL you configure for long-running ones. The trigger carries the same governance as every other part of LoopCraft. Each webhook run records the request headers, the payload, and the full trace, so a run started by an external system is just as inspectable as one you started by hand. Iteration caps and cost budget guards apply unchanged, and a signature secret lets the endpoint verify that requests really come from your integration. Rate limits protect the endpoint from accidental floods, and rejected requests return structured errors instead of silent drops. Typical uses: an inbox rule that starts a triage loop per incoming ticket, a CMS publish hook that runs an SEO-check loop per article, or a form submission that kicks off a personalization loop. Webhook triggers are available on all plans. Try them at https://getloopcraft.com. Feedback: sapsap@qq.com.