Tools, tactics, and taste for product builders.
Advice on building great products, lessons (and mistakes) from building PostHog, and deep dives into the strategies of top startups.
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All posts (73)
Can software factories actually work?
Software factories let agents ship code with little human review
Aug 11, 2026 · Jina Yoon
What nobody tells you about writing agent skills
Everything we've learned about writing great agent skills at PostHog – progressive disclosure, avoiding over-specification, preventing skill rot, and knowing when not to write one
Aug 3, 2026 · Ian Vanagas
How much can you delegate to agents?
A simple guide to agent autonomy
Jul 27, 2026 · Jina Yoon
2030-shaped software
By 2030, AI agents will be the primary users of software
Jul 20, 2026 · Ian Vanagas
Stop being the code review bottleneck
AI writes code faster than you can review
Jul 9, 2026 · Jina Yoon
We used context engineering to 5x conversion and 2x activation
How PostHog built a context layer for its AI wizard — 5x paid conversion, 2x faster activation, and 80% larger MRR in the first paying month
Jun 24, 2026 · Edwin Lim
Why we're bullish on loops
We're bullish on loops
Jun 17, 2026 · Ian Vanagas
24 tips for giving S-tier demos
An engineer's guide on how to demo well
May 28, 2026 · Jina Yoon
The stuff nobody tells you about startup marketing
Everything about startup marketing that actually matters — from matching channels to your sales motion to why attribution is a lie, and when to make your first marketing hire
May 6, 2026 · Charles Cook
Great companies are built in hackathons
You should run more hackathons
Apr 21, 2026 · Ian Vanagas
The golden rules of agent-first product engineering
Five principles for building products that work well for AI agents and MCP servers
Apr 8, 2026 · Jina Yoon
What we wish we knew about building AI agents
One thing on every startup’s mind: Should we build an AI agent?
Mar 24, 2026 · Ian Vanagas
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