heym

What it does

Drag-and-drop nodes for LLM calls, agents, RAG pipelines and multi-agent orchestration, with MCP support, deployable on your own machine from a single script and callable as an endpoint once built. The licence carries a Commons Clause: internal use is fine, selling the software itself is not — worth reading if you plan to build a product on it. Anything the workflow touches reaches your chosen model, and an exposed endpoint needs authentication in front of it.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultySome setup needed
• Command lineRequired
• API keyRequired
• Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

heym FAQ

Is heym free?

heym itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.

Do I need to install anything or write code to use heym?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does heym work on a phone?

No. It needs a computer.

Can I use heym commercially?

The project does not state a clear licence, so commercial use cannot be confirmed here. Check the official page or ask the author before using it at work.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

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