Documents in; training, a rota and sourced answers out.
Next.js · Supabase pgvector · Claude · Inngest · Stripe00 · Hero
01 · frunt · main project
03 · Other work
02 · MGKFitness
05 · About
04 · How I work
06 · Contact
Matthew
Kay
357 × 446frunt
The problem
Restaurants have their rules written down. Staff don't read them.
↑ Every answer cites its source
Ask, read, sign off and train from a phone. On the App Store and Google Play.
Flutter · Firebase messagingMarketing site, pricing and ten UK-law guides, built to be found.
Next.js · structured data · llms.txtHow I run the business: customers, revenue, AI cost per feature, health checks.
Stripe · PostHog · Sentry · GitHub + Vercel APIsClaude proposes posts and I approve them; they render, schedule, publish and report back.
Instagram API · Inngest · SatoriSourcing, email, calls and visits, with PostHog and Search Console showing what works.
Notion · Gmail · Vercel cron · Search Console
MGK
Fitness
Decision 0001 · accepted 17 Aug 2026
Liftio is replaced, not relaunched.
"Retiring a live record to avoid an untidy string is paying a real cost for a cosmetic one."
Running tracker with an AI training coach.
Flutter · GPS · shared design systemStrength log with a coach of its own. The rebuild of Liftio.
Flutter · shared design systemOne account across both apps. The coach plans around your whole week.
Supabase · Edge Functions · OpenRouter · RevenueCatScroll film, waiting list, support and legal pages. No tracking, by design.
Next.js 16 · Replicate clipsPosts drawn in Remotion from the site's own words, published through the Instagram API.
Remotion · Instagram APIStore listings and submissions run from Claude Code; builds on Codemagic.
App Store Connect · Google Play · CodemagicOther
Work
About
Me
Building things has always been how I think. Before I knew what programming was, I was pulling things apart to see how they worked.
I run MGKCodes, the studio behind frunt and MGKFitness.
MGKCodes · the studio
behind frunt + MGKFitness
behind frunt + MGKFitness
How I
Work
7 Claude Code skills I've built · live from GitHub
Mobile CIcodemagic-buildClaude Code · Codemagic · REST APIUI Evidenceui-walkClaude Code · PlaywrightUI Reviewpage-auditClaude Code · PlaywrightMobile QAemulator-verifyClaude Code · adb · FlutterWeb Perflighthouse-auditClaude Code · Lighthouse · ChromeProduct Mapscreen-boardClaude Code · Playwright · Claude DesignReliabilitysilent-failure-sweepClaude Code · Static analysis · SQL
01Plan
Every screen laid out on one board, each with what it's for.
e.g. Lift screen board, v1102Decide
Big calls written down with the reasoning, so they can be checked.
e.g. Decision 000103Build
AI does the typing. My own skills library sets how it works.
e.g. github.com/MattKay02/skills04Check
Screens checked by eye, design reviews, a build check on every PR.
e.g. 19 findings, 30 Sept review05Ship
Store submissions with a written record of what went out.
e.g. Run 1.0, 2 Oct 2026Let's
Talk
mattykay2002@gmail.com