Use when building or debugging Zeko wallet-signed zkApp transactions, especially Auro flows that require explicit fee-payer handling, nonce-safe transaction building, or sequencer-backed fee selection.
Use this skill for Zeko transaction builders that must survive real wallet signing.
useFullCommitment = trueTX_FEE.Invalid_fee_excessAuthorization kind does not match usually means a proof/signature boundary is wrong.sendTransaction, with feePayer supplied externally.transaction.feePayer.body.fee === "0", change it to "1" before wallet submission.onlySign: true in the wallet and submit the signed zkappCommand from the backend with the sequencer sendZkapp mutation.src/darkpool-server.jspublic/darkpool.html