SlotFlow

Local-first, extensible AI agent workspace — FastAPI + Next.js + LangGraph, with skills, MCP tools, artifacts, long-term memory, sub-agents, and multi-provider (DeepSeek/OpenAI/Anthropic) reasoning streaming. Maintained by iam-xiaofeng on GitHub, where it has earned 30 stars from the community.

It's actively developed around agent, ai-agent, anthropic, and is a solid reference for anyone building with these tools.