SKALE

Zero-gas EVM

SKALE

SKALE Base is the one EVM chain in the Dexter footprint where gas cost is literally zero. For x402 payments of a few cents, that changes the settlement economics entirely.

Zero gas

Network IDs

Why SKALE Is Different

For x402 payments of only a few cents, gas-to-payment ratio matters. SKALE removes that ratio entirely — transactions use sFUEL (called "credit" on SKALE Base), which has no monetary cost.

The facilitator still uses the same shared EVM x402 model:

• EIP-3009 transferWithAuthorization (default for USDC)
• Permit2 also available for any ERC-20 token
• normal verify/settle flow
• same public facilitator URL at https://x402.dexter.cash

The difference is economic, not API-shape related. Since SKALE has zero gas costs, the gas sponsoring extensions (erc20ApprovalGasSponsoring, eip2612GasSponsoring) have no cost impact here — but they are still registered for consistency.

Token Details

Getting USDC on SKALE

USDC reaches SKALE Base through the SKALE Bridge. Users bridge from Ethereum mainnet to SKALE Base. There is no native Circle mint on SKALE — all USDC on the chain is bridge-wrapped.

Best Fit

• high-frequency, low-value x402 calls where gas overhead matters
• merchants or partners sensitive to settlement cost
• experiments where you want the cheapest possible EVM-side settlement

Quick Support Check

curl -s https://x402.dexter.cash/supported | jq '.kinds[] | select(.network == "eip155:1187947933")'

Validate Before Shipping

1. Confirm SKALE appears in GET /supported.
2. Set network: "eip155:1187947933" in your payment requirements.
3. Test POST /verify and POST /settle with a real SKALE-targeted payment.

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