Server-side SELL fails due to Permit2 signing requirement

[culturalmass]

Hi Zora Team,

I’m trying to perform a server-side SELL using @zoralabs/coins-sdk with an EOA private key, but the transaction fails with:

HttpRequestError: HTTP request failed. Status: 403 method: eth_signTypedData_v4

BUY (ETH → token) works fine server-side.

SELL (token → ETH) always fails because tradeCoin attempts Permit2 signing internally.

tradeCoin does not expose a way to pass a user-signed Permit2 signature.

Using createTradeCall is not an option because it only works for ETH swaps, not ERC20 SELL.

The Problem is:
Server-side wallets cannot sign eth_signTypedData_v4 RPC calls, so server-side SELL is currently impossible without a user wallet or forking the SDK.

Request:

Expose an option in tradeCoin to accept a user-signed Permit2 signature.

Or provide a server-side workflow for ERC20 SELL that works without requiring eth_signTypedData_v4 to be the default method.

Thank