UPAY3FOODInstall
README

UPAY3FOOD documentation

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Você paga 3 vezes pela comida: the food, the fees, and the difference to the cheapest option. UPAY3FOOD shows all three on iFood, compares the menu per litre, and takes you to the item that is worth it. It can then fund the purchase privately with USDC on Solana.

Raio-X do preço on a real iFood product

Start here

If you are… Read
A user Install the extension · What it shows · What it never does
A judge Product · Price calculations · Mainnet proof · Business model and pitch (pt-BR) · Benchmark
A developer Architecture · Extension · Dev bridge · Plug your agent (MCP) · Data sources · ADRs

What works today (2026-10-10)

Piece Status
Reading iFood pages (search, restaurant, menu, product, bag, checkout, Pix) in the user's own session Real, calibrated on live pages through the dev bridge
"Você paga 3 vezes", Raio-X do preço, Tamanho que compensa, Bebidas por litro Real numbers from the page; estimates are labelled
Pesquisa no cardápio (the agent answering from the menus already read) Estimate: menu price + the shop's delivery fee + service fee; never an offer
Decision engine on checkout totals Real totals only (ADR-004); comparisons need ≥ 2 real observations
Private funding: USDC shielded into Cloak Real on Solana mainnet (proof)
Off-ramp to Pix Disabled until a licensed provider is integrated (ADR-006)
Website market board Synthetic demo data until the observation network is deployed (the banner says so)
Your own agent (Claude, ChatGPT, Cursor) via MCP Live: https://upay3food.com/api/mcp, how
Mobile Plan

How it works

your iFood session ──read only──► extension ──► normalize (ml, g of meat, pack units)
                                     │                     │
                                     │                     ├─► "Você paga 3 vezes" + Raio-X
                                     │                     ├─► Tamanho que compensa (menu per litre)
                                     │                     └─► Pesquisa no cardápio → link to the item
                                     └─► sanitized observation (no address, no account data)
                                                           └─► decision engine on real totals
USDC wallet ──shield──► Cloak pool ──(planned) licensed off-ramp──► Pix

All sections

Directory Purpose
00-overview/ thesis and product boundary
01-problem/ fragmentation and substitutability
02-user/ user and jobs
03-market/ market, landscape and data sources
04-product/ what the product shows, normalization, mobile
05-architecture/ agent, calculations, observation network, payments, runtime
06-business/ business model and pitch
07-hackathon/ demo, submission, benchmark
08-proofs/ confirmed, externally verifiable milestones
decisions/ ADRs
incidents/ failures, investigations and postmortems
spikes/ time-boxed investigations before a design decision

App READMEs (apps/*/README.md) are published with the docs under Apps. Public documentation: https://docs.upay3food.com

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