Checklists
4,337 items. Every page has a copy button that gives you plain markdown — for your own repo, or to paste into an assistant.
Security 3,306 items
Not getting breached, abused, or taken down.
Core
Web Frontend127
AI & agents
AI-generated code
Scale 301 items
Surviving ten times the load, and knowing what breaks first.
Caching25
Performance 338 items
Being fast for a real user, with Lighthouse agreeing.
Integrations 200 items
Being connected: search, analytics, monitoring.
Post-launch 192 items
When it goes wrong anyway: is the response already decided?
Stack supplements
One file per product, spanning every domain. Skip any you do not use — the domain checklists stand on their own.