[PT1-347] Feature/permit2 without witness#400
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ifelsedeveloper merged 10 commits intomasterfrom Feb 3, 2026
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- Introduced Permit2Proxy contract for proxy transfer functionality using Permit2. - Added IPermit2TransferFrom interface defining structures and methods for permit-based token transfers. - Implemented a script for ABI selector extraction to facilitate selector management.
- Updated Permit2Proxy contract to use IPermit2TransferFrom interface and corrected function selectors. - Removed obsolete abi_selectors.py script to streamline the codebase. - Added a new selector bruteforce script for enhanced functionality. - Introduced ProxyExample test to demonstrate permit2 usage without witness.
SevenSwen
requested changes
Feb 3, 2026
- Introduced a new development guide in `dev.md` detailing the usage of the selector bruteforce tool for proxy contracts. - Removed the obsolete `selector_bruteforce.py` script to streamline the codebase and encourage the use of the new guide.
- Created a new documentation file for the Permit2Proxy contract, detailing its purpose, functions, and error handling. - Included descriptions for the constructor and the `func_nZHTch` method, along with the associated error `Permit2ProxyBadSelector`.
SevenSwen
approved these changes
Feb 3, 2026
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Change Summary
What does this PR change?
Adds
Permit2Proxycontract - a non-witness version ofPermit2WitnessProxythat usespermitTransferFrominstead ofpermitWitnessTransferFrom, enabling simpler Permit2 integrations without witness data.Related Issue/Ticket:
https://1inch.atlassian.net/browse/PT1-347
Testing & Verification
How was this tested?
Risk Assessment
Risk Level:
Risks & Impact
Files Changed
contracts/extensions/Permit2Proxy.sol- New proxy contract without witnesscontracts/interfaces/IPermit2TransferFrom.sol- New interface forpermitTransferFromtest/Permit2Proxy.js- Unit test for the new contracttest/WitnessProxyExample.js- Updated test with proper nonce handlingtest/helpers/nonce.js- Helper for unique Permit2 nonce generationdocs/extensions/Permit2Proxy.md- Documentation for the new contractdev.md- Development guide with reference to selector bruteforce tool