activepieces/activepieces

What is it?

Activepieces is an open-source automation platform — a self-hostable alternative to Zapier. It lets you build workflows (called flows) that connect apps and services, and it is designed to be AI-first: its building blocks are pieces, and all 280+ pieces are exposed as MCP servers that LLM tools like Claude Desktop, Cursor, or Windsurf can call directly.

Unlike a pure no‑code tool, Activepieces is built on a TypeScript framework for writing integration pieces as npm packages. That means developers get type safety, versioning, hot‑reloading for local piece development, and the ability to publish pieces to npm. Non‑developers can still use the visual builder for loops, branches, retries, HTTP calls, and even "ASK AI" steps in code to clean data without writing code.

Why it matters in the AI / LLM space

• MCP toolkit: Every piece automatically becomes a callable MCP server — so the same integration you use in the builder becomes a tool an LLM can invoke.
• AI agents & builder: Native AI pieces for experimenting with providers, and an AI SDK to build agents inside flows.
• Human‑in‑the‑loop: Delay execution for approval steps, or add chat/form interfaces as triggers.
• Extensible: Contributions create reusable pieces that benefit both the no‑code builder and LLM consumers.

Who is it for?

Technical teams who want a self‑hosted, secure automation layer with deep customization, plus non‑technical users who need a drag‑and‑drop interface. Because it's a real codebase (not a wrapper), it's also a strong foundation for teams building their own automated workflows with AI components.

Core capabilities (from README)

• Visual builder: loops, branches, auto‑retries, HTTP, code execution with NPM
• "ASK AI" in code piece for non‑programmers
• 200+ integrations (open source, community‑contributed)
• All pieces exposed as MCP for LLM tools
• Self‑hosted, network‑gapped for isolation
• Human input interfaces (chat, form)
• Versioned flows, i18n support, customizable templates

License

Community Edition is MIT; enterprise features are under a separate commercial license.