Viewing profile — jlowin

Hi HN, I'm the author of FastMCP, the most popular Python framework for building MCP servers. I've been really excited about MCP Apps for a while. I think letting a server ship a f…

FastMCP author here, surprised and excited to see this hit the front page! Certainly not an announcement, we’ve been around since the beginning, but we will be launching full gener…

Hi HN — I'm the creator of FastMCP and wanted to share a new project we've open-sourced called Colin. I obviously love MCP, but I also use skills extremely heavily in my day-to-day…

Sure! There will not be any contention between their roadmaps, in fact FastMCP will continue to evolve somewhat independently of FastMCP Cloud. We'll be announcing our first extern…

FastMCP author here -- (maybe surprisingly) I agree with many of the observations here. FastMCP exists because I found the original spec and SDK confusing and complicated. It conti…

One of the first features we added to FastMCP 2.0 [1] was server composition and proxying (plus some niceties around trying to reuse servers whenever possible) for exactly this rea…

Hi HN -- Today I'm announcing FastMCP 2.0! A few months ago, I created the first version of FastMCP to build MCP servers in Python with minimal boilerplate. It was so successful th…

Nice! Would love to collaborate

Hi HN -- Since Anthropic announced the Model Context Protocol (MCP) last week [1], I've been excited about giving Claude new capabilities through my custom servers. But while MCP i…

There was a tutorial at the Prefect Summit this week, video should be available soon, and lots more coming. Probably our most pressing request!

Thanks! Let us know how it goes!

Hi HN! I’m excited to share ControlFlow, our new open-source framework for building agentic workflows. ControlFlow is built around a core opinion that LLMs perform really well on s…

Yes, this version uses OpenAI LLMs.

Hey HN! We just released Marvin 2.0. Marvin is an AI toolkit for developers who want to use LLMs with traditional software. We still see significant challenges integrating LLMs bec…

I bet it would work if you invert the control image!