Pay in STABLE

Stable Mainnet uses gUSDT as the gas token. Many users hold the governance token STABLE but do not hold gUSDT, and acquiring gUSDT often requires bridging and extra fees.

GASSSS adds a gas sponsorship layer so users can execute transactions while paying a fixed fee in STABLE.

Core idea

• The relayer pays gas in gUSDT.

• The user pays a fee in STABLE.

• Execution is authorized by the user via EIP-712 signatures and enforced on chain.

• EIP-7702 is used to delegate an EOA to a SponsoredExecutor implementation for sponsored execution.

Want to learn about precompiled ERC20 tokens? Head to the STABLE's EIP-7702 section to learn more.

Components

SponsoredExecutor contract

• Enforces relayer only execution.

• Verifies EIP-712 signature against the delegated authority.

• Transfers feeToken and feeAmount to feeRecipient.

• Uses a namespaced nonce slot in EOA storage to avoid collisions.

• Uses transient storage for reentrancy protection.

Relayer

• Validates signatures and deadlines.

• Performs staticcall simulations to reduce failed transactions.

• Enforces fee policy and request constraints.

Security model

• On chain immutables: relayer, feeRecipient, and owner are fixed at deployment.

• The contract only trusts signatures from the delegated authority and enforces nonces and deadlines.

• The server enforces fee policy and rejects requests that do not match configured feeToken and feeAmount.

Mainnet parameters

• Fee token: STABLE 0x0000000000000000000000000000000000001003

• Fee amount: 100 STABLE

Mainnet deployments

Component	Address
SponsoredExecutor	0x9d870a5eaEbb6023C12D54f3cA0BBb02F866c55f
Relayer	0x613c730e26e37464980a578275a76caa6ddfcd60
Fee Recipient	0x5e20aceaa735bdae9e68c2bd8fd4e66ac6861e98