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Gonzalo Peña-Castellanos

@goanpeca

AI Engineer at Datalayer ≡ | Senior Full-Stack Software Engineer | Scientific Python Core Contributor | Open Source and Community Building | CEO/CTO at Trepa

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Latest posts by Gonzalo Peña-Castellanos @goanpeca

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Cómo uso Claude Code: Meta Repos, Persistencia de Planes y Logs de Iteración | goanpeca Patrones prácticos para desarrollo asistido por IA: meta repos para contexto multi-proyecto, persistencia de planes en claude-plans/, y logs de iteración para depurar bugs difíciles.

Con Claude Code, un bug me tomó 27 iteraciones para ser arreglado finalmente.

Sin un log de cada intento, el modelo repetía las mismas soluciones fallidas una y otra vez.

Escribí sobre esto y otros patrones que uso a diario 👇

goanpeca.co/es/blog/2026...

20.02.2026 16:36 👍 4 🔁 0 💬 0 📌 0
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Release Release 0.21.0 · datalayer/jupyter-mcp-server 🚀 Release 0.21.0 🔗 Links PyPI Docker Hub What's Changed add get_tool caching by @eleonorecharles in #177 Full Changelog: v0.20.1...v0.21.0

🚀 #Jupyter #MCP Server 0.21.0 is out! A single-PR release that speeds up tool discovery by adding caching — super handy for agents that love to use (or abuse) the get_tools API 😄

🔗 github.com/datalayer/ju...

27.11.2025 15:14 👍 3 🔁 2 💬 0 📌 0
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Just returned from JupyterCon, where I had the opportunity to present on #Jupyter #MCP Server. It was fantastic to connect with the community and witness all the incredible innovation happening in the space. I’ll be sharing more insights and follow-ups from my talk in a blog post soon—stay tuned!

13.11.2025 07:23 👍 6 🔁 2 💬 1 📌 0
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agent built on top if pydantic AI (migrated from langchain)

20.10.2025 18:18 👍 1 🔁 1 💬 0 📌 0

@goanpeca.bsky.social hello. welcome to bluesky

26.09.2025 17:22 👍 1 🔁 1 💬 0 📌 0
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2025 is the year of the agents

20.10.2025 17:10 👍 1 🔁 1 💬 0 📌 0

Crazy how many hours it takes to get a decent dark theme. But hey, users love it—so we grind on. 🌑

11.09.2025 11:45 👍 2 🔁 2 💬 0 📌 0

Data analysis from our desktop app?

That’s exactly what our new Electron app is all about.

🧵⤵️

09.09.2025 02:18 👍 2 🔁 2 💬 1 📌 0
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Jupyter Notebooks: Analyzing Biological Datasets with Datalayer Opening a Jupyter notebook to explore gene expression, microbial, or protein-interactions? Well… perhaps you know that things can get…

Have you ever spent more time dealing with CSVs, chasing versions, configuring environments than doing your actual research? 😅

We’ve built a Datalayer for biologists to focus on making progress, rather than configs’ issues. Here’s how it helps:

🧵⤵️

05.09.2025 01:35 👍 2 🔁 2 💬 1 📌 0
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Jupyter Mimetypes for Datalayer SDK Discover how Datalayer is enhancing Jupyter for remote code execution.

5/5

📖 Read the full post to find out more: datalayer.blog/2025/08/11/j...

13.08.2025 04:43 👍 1 🔁 1 💬 0 📌 0
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1/5

🔔 We just launched a new update for Python dev working with Jupyter

Introducing jupyter-mimetypes - a new Python package that makes variable exchange between kernels and clients much (much) simpler.

🧵⤵️

13.08.2025 04:43 👍 2 🔁 2 💬 1 📌 0

Doing data analysis can feel tedious and messy at times. 😩

You’ve got tabs open, files scattered, and Python tutorials running in the background.

It’s chaotic.

But it doesn’t have to be.

🧵⤵️

29.08.2025 06:43 👍 2 🔁 2 💬 1 📌 0
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The AI for Earthquake Response challenge is heating up 🔥 (organized by @esaearth.esa.int : platform.ai4eo.eu/ai-for-earth...).

Our Datalayer team is holding strong in 2nd place as Phase 1 wraps up! 🌎

02.09.2025 16:07 👍 2 🔁 2 💬 0 📌 0