A smart wallet needs more than a supported network and a Connect button. The swap product must accept the account’s authorization method and any setup actions needed by the selected order. Evaluate the account and execution mode together.
For example, CoW Swap’s wallet guide includes Safe and discusses ERC-1271 contract signatures. Its native-token guide nevertheless gives different options and restrictions for smart-contract wallets. Support at the protocol level does not flatten those product differences.
Build a small compatibility record
| Question | Why it changes selection |
|---|---|
| Can this account sign the order? | Contract signatures and externally owned account signatures differ |
| Can required approval be completed? | A token’s permit path may not support the account |
| Does the native-asset flow work? | A wrapper or deposit path may have interface restrictions |
| Can co-signers finish before expiry? | Proposal creation does not mean execution authorization is complete |
CoW’s TWAP guide makes the last distinction concrete for Safe: a proposed transaction still requires the necessary signatures. A product can fit the strategy but fail the team’s operational timing.
Read recent support changes narrowly
OKX’s July 29, 2026 changelog adds EIP-1271 to its Intent Swap API. That is evidence about the API’s signature support. It is not proof that every OKX retail screen, chain or integrated wallet combination implements the capability.
Ask the application to identify its supported account types and mode. If only an ordinary transaction path works, compare that path on its actual costs and controls; do not describe it as the same gasless offer. Choose the product whose full authorization and completion workflow matches the account you control.
Sources & verification (4)
Source-check date is recorded in the article details. URLs are provided for manual verification. Use Copy to keep this page open.
- CoW Swap
Supported wallet paths include injected wallets, Safe, WalletConnect v2 and hardware wallets. Typed-order and contract-signature support must be checked separately.
https://docs.cow.fi/cow-protocol/tutorials/cow-swap - Native tokens
Wrapping and Eth-flow alternatives, upfront gas, failed-order refunds and account-type limitations.
https://docs.cow.fi/cow-protocol/tutorials/cow-swap/native - TWAP orders
Safe wallet required in documented workflow; scheduled parts and multisignature lifecycle. Numeric minimums conflict within source, omitted.
https://docs.cow.fi/cow-protocol/tutorials/cow-swap/twap - Onchain OS Change Log
The changelog adds EIP-1271 support to the Intent Swap API on July 29, 2026 and records an EVM router update on August 4, 2026.
https://web3.okx.com/onchainos/dev-docs/home/change-log