Destination gas, handled
Arrive on Hedera
ready to move.
Bridge a supported asset, keep most of it, and convert a value-bounded slice into the HBAR you choose. x402 charges the sponsorship fee in the asset you already own.
Testnet acceptance mode
No verified bridge route exists on Hedera testnet. Live acceptance starts after assets arrive on Hedera.
Route
Bridge to Hedera
ToHedera
Fixed
Testnet bridge unavailableUse the post-arrival refuel path below. No simulated bridge is presented as live.
Destination
Refuel on Hedera
Connect your EVM walletThe same secp256k1 address is used on Hedera. No key import.
HBAR
RouteUSDC → WHBAR → HBAR
Spend at mostLive quote required
x402 sponsorship feeCalculated from required legs
Remaining assetMinimum retained balance enforced
✓
Token associationSkipped when the asset is already held
2
Router approvalIncluded only when allowance is low
3
Exact-output swap + unwrapSponsor pays HBAR fees; you remain the EVM sender
Refuel402 never requests a private key or sends an arbitrary transaction.
Advanced details Routes, fees, contracts
NetworkHedera testnet · 296
SettlementHedera-native x402 · HTS
SwapSaucerSwap V2 exactOutput
ExecutionPublic backend not connected
Gas allowanceLive quote required
HAPI reserveLive quote required
Failure reserveLive quote required
Operating marginLive quote required
Router
0x0000…159398WHBAR
0x0000…003ad2How the journey completes
Non-atomic by design- 1Origin approvalYour source wallet
- 2BridgeAxelar / LayerZero
- 3Arrival on HederaWait for finality
- 4x402 paymentIn your supported HTS asset
- 5Sponsored legsApproval only if needed, then swap
- 6HBAR receivedReady to transact
Testnet execution is isolated from mainnet. Bridge arrival, x402 payment, approval and swap are separate stages; swap + unwrap may execute atomically through the Router. LayerZero ERC-20 refueling remains unsupported until its wrapper and payment semantics are proven.