Testnet swap group in fifteen minutes.

Clone the MIT-licensed repository and install the Vyper and Rust toolchains. Everything is self-hosted — there is no hosted service to sign up for.

git clone https://github.com/cryptuon/tesseract
cd tesseract

# contracts
pip install vyper
# relayer
rustup toolchain install stable

Before deploying anything, run the 135-test suite. It covers compilation, tokenomics, access control, safety, and cross-chain integration scenarios.

# compile all seven Vyper contracts + run tests
make test

# expected on main: 86 passed, 40 xfailed, 9 xpassed

Deploy the seven Vyper contracts to each rollup you want to coordinate — Sepolia, Amoy, and the L2 testnets are supported out of the box.

# deploy to Arbitrum Sepolia + Base Sepolia
make deploy NETWORK=arbitrum-sepolia
make deploy NETWORK=base-sepolia

# note the deployed TesseractBuffer + Coordinator addresses

Point the Rust relayer at each chain's RPC and the contract addresses. It monitors events over WebSocket with HTTP failover and persists state in PostgreSQL.

export DATABASE_URL=postgres://localhost/tesseract
export RPC_ARBITRUM_SEPOLIA=wss://...
export RPC_BASE_SEPOLIA=wss://...

cargo run --release --bin relayer

Submit a commitment for each leg with a shared swap_group_id and a deadline. Reveal after one block; the relayer coordinates resolution across chains, or the group refunds after the deadline.

# leg A on Arbitrum, leg B on Base, one shared group id
GROUP=$(cast keccak "arb-base-demo-001")

cast send $BUFFER_ARB "buffer_transaction_with_commitment(bytes32,bytes32,bytes32,uint256,address)" \
  $TX_A $COMMIT_A $GROUP $DEADLINE $REFUND
cast send $BUFFER_BASE "buffer_transaction_with_commitment(bytes32,bytes32,bytes32,uint256,address)" \
  $TX_B $COMMIT_B $GROUP $DEADLINE $REFUND

# reveal after 1 block, then the relayer resolves the group