Structure lesson
BitPOS
Cafe ordering, sponsored Solana devnet payments and merchant-approved AI offers on BitPOS Mini.
What it does
From the project README:
Built by Natthapong Suwanjit. Merchant tablets create itemized bills; customers scan an order or table QR, order on their own phone and authorize a merchant-sponsored stablecoin transaction on Solana devnet. Finalized on-chain verification updates the bill, inventory and the assigned ESP32 display through a durable outbox.
- Original
- cryptoclocks/BitPOS
- SuperStack fork
- Blockchains/BitPOS @
9222095 - Stars
- 0
- Last push (original)
- 2026-11-04
- Languages
- TypeScript, Dart, PLpgSQL, JavaScript, C, Python
- Detected stack
- @solana/kitweb3.js
- Categories
- AI & AgentsPayments
- Licence
- Apache-2.0
- Homepage
- https://bitpos.cashlessthailand.com/
Architecture
775 source files. By extension: .ts ×627, .py ×65, .tsx ×61, .c ×15, .js ×7.
| Top-level directory | Source files |
|---|---|
tools | 338 |
apps | 222 |
tests | 148 |
packages | 29 |
device | 14 |
design | 10 |
.omp | 6 |
team-guide | 4 |
Where the Solana code lives
Source files that import a Solana SDK, ranked by how many Solana APIs they use, with the APIs each one calls. Read them in this order to see how the app talks to the chain.
| File | Solana APIs used |
|---|---|
apps/worker/src/payout-provider.ts | PublicKey, transfer, Transaction, getAccountInfo, VersionedTransaction, Connection |
apps/api/src/payments.ts | PublicKey, Transaction, transfer, Keypair, Connection, getAssociatedTokenAddressSync |
tools/runtime/coffee-copilot-grant-smoke.ts | PublicKey, transfer, VersionedTransaction, Keypair, Transaction, TransactionMessage |
tools/runtime/food-return108-sql-smoke.ts | Keypair, transfer, PublicKey, Transaction, SystemProgram |
tools/runtime/coffee-x402-http-smoke.ts | PublicKey, transfer, VersionedTransaction, getBalance, TransactionMessage, getAssociatedTokenAddressSync |
tools/runtime/delivery-acceptance-builder-smoke.ts | PublicKey, Keypair, VersionedTransaction, ComputeBudgetProgram, TransactionMessage, getAccountInfo |
apps/api/src/x402-payment.test.ts | Keypair, PublicKey, VersionedTransaction, TransactionMessage, ComputeBudgetProgram, signTransaction |
apps/web/src/lib/wallet.ts | signTransaction, Transaction, VersionedTransaction |
tests/backend-payment-assets.test.ts | Keypair, PublicKey, Transaction, getAccountInfo |
apps/api/src/delegated-payments.ts | PublicKey, Transaction, getLatestBlockhash, getAssociatedTokenAddressSync |
apps/api/src/delegated-signer.ts | PublicKey, Keypair, VersionedTransaction, ComputeBudgetProgram, TransactionMessage, getAssociatedTokenAddressSync |
tests/delegated-payments.test.ts | PublicKey, Keypair, Transaction, getLatestBlockhash, getAccountInfo |
Dapp: devnet deploy pending
⏳ Devnet deploy pending — goes live when the devnet wallet is topped up. This fork's own dapp is not deployed yet, so there is no program address or transaction to show. It is queued in dapp-queue.txt; once devnet SOL is available it is deployed, exercised with real devnet transactions, and this section switches to the live dapp at /dapps/bitpos/. Until then, the lesson and step-by-step guide below are complete, and you can run it locally with the commands below.
How to run, build and test
These commands come from the repo's own manifests (package.json scripts, Anchor.toml, Cargo, go.mod, Makefile). Check the README for prerequisites and environment variables.
| Directory | Command | Runs |
|---|---|---|
. | npm run build | astro build --root apps/web |
. | npm run test | tsx --test --test-concurrency=1 tests/*.test.ts |
tools/diagram-renderer | npm run build | node render.mjs |
What you could build from it
- Fork the SuperStack copy and extend it within the AI & Agents gaps listed on the idea page.
- Learn the pattern first: AI agents on Solana
- Learn the pattern first: Building and sending transactions from a client