Things built, contributed, or shipped and open-sourced. Hackathon entries are on Devpost ↗.
An open-source DevEx harness for AI-native engineering teams: skill routing, an agent operating contract, and multi-model orchestration.
Impact — The operating model described in the book, published as a working repo rather than a diagram: skill routing, an agent operating contract, multi-model orchestration.
A packaged Google Cloud skill set for agent harnesses — the reusable team knowledge that otherwise gets rebuilt on every engagement.
Impact — Listed on Claude Plugin Hub. Packages the Google Cloud architecture guidance that otherwise gets rebuilt on every engagement, so a team starts from it rather than from a blank prompt.
The source behind c4x — C4 architecture diagrams as code, with a Mermaid-inspired DSL, offline preview, and cloud icon sets.
Impact — Source for a published extension carrying thousands of installs across two marketplaces; v1.6 added a visual C4 editor on top of the Gemini generation.
Google Cloud Rapid Agent Hackathon
An ADK multi-agent system that scans G8 economies for dislocations and surfaces the resulting market opportunities.
Impact — Built to a hackathon deadline, which is the useful part: the orchestration had to work end to end rather than on a slide.
Google Chrome Built-in AI Challenge
Prompt management in the browser, rebuilt on Chrome's built-in on-device AI.
Impact — The weekend build kept going: published to the Chrome Web Store, a growing user base, and rebuilt two years later on Chrome's on-device AI.
Devpost submission
A Slack integration that summarises channels, documents and video to cut the cost of catching up.
Impact — Self-hosted on Google Cloud from the start, so channel content never leaves the tenant to be summarised.
Contributor to Google's open-source framework for building multi-agent systems.
Impact — Contributions to the framework the book uses as its mental model for agent composition.
Contributor to the Agent Development Kit documentation — the canonical reference for ADK's API surface.
Impact — Documentation contributions to the same framework — the reference other teams read before building on it.