Block Open Source

Day 5 of the Advent of AI is here! & it’s time to throw your keyboards out the window. The challenge: build a gesture-controlled Homecoming Board using real flight data. Watch the Day 5 solution + try the Day 6 challenge, now live!

At Block, we're moving fast with AI, but never at the expense of security. Here are our GenAI security principles.

Block Engineering Blog

GenAI Security Principles

Blogpost about how to secure Generative AI applications by security engineers Wes Ring and Josiah Peedikayil. Product security offensive security.

MCP-UI changes the game! Instead of typing prompt after prompt, developers can now build real, interactive UIs— all running inside Goose. We’ll show you how it works, how you can make your own, and why it’s such a big deal. 📺: https://linktr.ee/blockopensource 📆: THURS · August 14 at 9am PT / 12pm ET

Goose is free. But the most performant LLMs aren’t. We didn’t want people paying out of pocket just to try Goose at meetups. So, Rizel Scarlett built a credit system using Open Router's provisioning API.

How OpenRouter Unlocked Our Workshop Strategy

How we used Open Router to provide frictionless LLM access for Goose workshops

What if your AI agent could read real GitHub docs—not hallucinate them? With the GitMCP extension Goose can: ✅ Pull live docs from any public repo ✅ Extract real setup + usage patterns ✅ Scaffold smarter, faster 📹: Full Tutorial:

GitMCP Extension | goose

Add Git MCP Server as a goose Extension

June 2025 Community All-Stars ⭐ It's time to celebrate all contributors who’ve helped make goose better, because every single contribution is important! 🏆 Check it out:

Community | goose

Join the goose community - connect with developers, contribute to the project, and help shape the future of AI-powered development tools.

Our engineers discovered USB barcode scanners were causing Android apps to freeze due to a garbage collection issue. Instead of just patching our own apps, we dug deep, found the root cause, and contributed the fix upstream to Android 16. The result? 40% improvement in our P90 latency + a fix that benefits the entire Android ecosystem. This is why we contribute to open source - when we make platforms better, everyone wins. 🚀

Block Engineering Blog

Ending Android USB Freezes

We investigated a main thread stall with perfetto and simpleperf, found that AOSP's USB stack can block garbage collection, and upstreamed a fix

🪿📱Introducing Goose Mobile An exciting new experimental project in the goose ecosystem! Goose Mobile is an open agent that runs directly on your Android device, designed to maximize automation of your everyday tasks.

GitHub

GitHub - block/goose-mobile: website

website. Contribute to block/goose-mobile development by creating an account on GitHub.

with goose, anyone with an idea can build it. we’re doubling down to make that even easier. goose now has a dedicated open source team. full autonomy. independently funded. we'd love the community to build with us. we're launching a grant program to fund impactful contributions. subscribe here

Contributor Grant Program: Interest Form

🚨 MCP AI Agent Hack Night in NYC – next week! 🚨 Hear from an MCP committee member, the Goose AI agent team, and play a fun game of Guess That Prompt from Galileo! 🍕 Food, drinks & good vibes ❤️ No experience required 💻 Bring your laptop & be ready to build some cool stuff RSVP:

AI Agent Hack Night with MCP · Luma

AI is moving fast and changing the way we work. Stay ahead by joining us in New York for our second, fun, hands-on hack night featuring codename go...