A curated gallery of small, browser-based proof-of-concept apps built for Singapore — focused on access, care, resilience, and community.
Each concept is independently scoped, visually distinct, and demoable without a backend or account.
goodideas.sg · Built with Next.js, Claude, and Codex · By Neil C
19 live concepts across eight themes:
| Theme | Examples |
|---|---|
| Urban access | Rain Window Planner, Carpark Chance, Traffic Camera Check |
| Accessibility | MRT Lift Note, Accessible Mall Route, Quiet Places |
| Community care | Senior Check-In, Elder Visit Planner |
| Health & ageing | Medication Reminder |
| Mental health | Check My Stress |
| Civic life | Volunteer Match, Skills for Good, Volunteer Hours |
| Cost of living | Rent Split Planner |
| Social connection | Try a Hobby Nearby, Community Cooking Circle, Block Potluck |
All POCs use seeded local data, localStorage, and persona-switch buttons — no auth, no server database.
graph LR
A["ideas/GOOD_SG.json"] -->|"agent picks next unbuilt"| B["app/pocs/slug/"]
B --> C["lib/pocs.ts"]
C --> D["/ gallery"]
D --> E["/pocs/slug"]
app/
├── layout.tsx root metadata + fonts
├── page.tsx gallery landing page
└── pocs/
└── <slug>/
├── layout.tsx per-page SEO metadata
├── page.tsx POC app (client component)
├── data.ts seed data + types
└── page.module.css
lib/pocs.ts card registry (title, summary, tags, theme)
ideas/GOOD_SG.json idea bank — source of truth for new POCs
rules/ mandatory design + content guidelines
automations/ Codex agent prompts (PM + Dev rounds)
skills/ reusable agent skill definitions
Requirements: Node.js 18.20+
npm install
npm run dev # http://localhost:3000
npm run build # production build check
npm run lint # eslint
npm run test # vitestA Dev agent reads ideas/GOOD_SG.json, picks the first idea without "built": true, implements it as a Next.js POC, and opens a PR labelled agent. The PM agent handles backlog triage and idea prioritisation.
Design and content rules live in rules/ — every POC must pass them before shipping.
See CONTRIBUTING.md.