Lab 9 — TON Testnet

Goal

Set up a TON testnet wallet, send TON, transfer a Jetton, and perform a STON.fi testnet swap.

Tasks

Pre-stage — Wallet setup

1. Install Tonkeeper browser extension.
2. Create a wallet and write the seed phrase on paper.
3. Enable testnet mode.
4. Get test TON from @testgiver_ton_bot.
5. Confirm balance in Tonkeeper.

Task 1 — TON transfer

1. Exchange testnet addresses with a partner.
2. Send 0.01 TON with a short comment.
3. Open the transaction on testnet.tonviewer.com.

Task 2 — Jetton transfer

1. Import the test Jetton using the master address provided by the instructor.
2. Transfer a small amount to your partner.
3. Locate sender and recipient Jetton Wallet contracts in Tonviewer.

Task 3 — STON.fi swap

Write a script that performs a TON → Jetton swap on STON.fi testnet.

Required packages:

mkdir ston-swap && cd ston-swap
npm init -y
npm install @ston-fi/sdk @ton/ton @ton/crypto

Use testnet contracts only. Do not use the mainnet api.ston.fi / StonApiClient for this task.

Deliverables

• TON transfer Tonviewer link.
• Jetton transfer Tonviewer link.
• Jetton master address.
• Sender Jetton Wallet address.
• Recipient Jetton Wallet address.
• Swap script as a single .ts or .js file.
• Tonviewer link to the swap transaction trace.