Hi, I'm Matthew Fontana.
I build the platforms that make AI coding tools actually work for engineering teams. I write here about what I'm learning along the way.
Currently Staff Engineer at Airbnb. Previously Spotify, UPS.
- Write here on agentic developer platforms, MCP, evals, and the agentic SDLC.
- Speak on podcasts, at conferences, and inside engineering orgs.
- Ship open source on GitHub (aitk, claude-code-toolkit, claude-tmux-manager, and other Claude Code tooling).
- Run TabletopAdventureCreator.com, a generative-AI SaaS in production since 2022.
- Help a handful of engineering teams a year build the platform layer underneath their AI tools.
From the blog
All posts
Guides & Fundamentals9 min readBuild Your AI Harness on Marketplace Plugins, Not Vendors
Marketplace plugins ship five portable primitives — commands, skills, sub-agents, hooks, MCPs — that let you build business AI workflows across vendors.
Guides & Fundamentals8 min readWhere to Invest in AI Without Getting Vendor-Tied
Stop betting on AI vendors. Invest in three vendor-agnostic layers — tools, prompt workflows, and evaluation frameworks — that survive every model swap.
Opinions & Analysis11 min readThe AI Productivity Gap Your Readout Should Name
Engineering leaders lose credibility defending AI tooling with vendor ROI numbers. The honest quarterly readout names the gap and pitches the work to close it.
35 posts · 53,768 words · since October 2025. More always in the queue.