AI
Budget Split Lab
Expenses and people - local fair-share math plus AI rationale for category splits.
Run this experiment yourself
Demos are not embedded on this site. Deploy a standalone copy on Vercel or run the experiment app locally.
Local development
cd apps/experiments/budget-split-lab pnpm install pnpm dev
Then open http://localhost:3010.
This is an experimental demo. Use it as a starting point for your own projects.
Budget Split Lab is a Batch G vertical mini composition lab. Pure helpers live in logic.ts; AI calls return an honest 503 when no provider is configured.
Features
- Local splitEvenly math
- AI rationale
- Honest 503
Server Reference
POST /api/split
{ "expenses": "..." }| Status | Cause |
|---|---|
200 | Success (or stream) |
400 | Missing / invalid input |
503 | No AI provider (AI_GATEWAY_API_KEY or OPENAI_API_KEY) |
Limitations
- Not banking software.
- Simple even-split helper.
- No multi-currency FX.
Deployment
Local Development
cd apps/experiments/budget-split-lab
pnpm install
pnpm devConfiguration
| Variable | Required | Purpose |
|---|---|---|
AI_GATEWAY_API_KEY | Yes (or OpenAI) | Preferred AI provider |
OPENAI_API_KEY | No | Fallback |
AI_MODEL | No | Model override |