Reports

dexter-x402-sdk: what we found

Solana adapter's payment scan throws when any candidate is a version 1 transaction.

Public since 2026-10-29. GitHub issue Dexter-DAO/dexter-x402-sdk/issues/86 was posted.

Code: Dexter-DAO/dexter-x402-sdk, their default branch on 2026-10-29. Reported to them: Dexter-DAO/dexter-x402-sdk/issues/86.

Status: Open: no fix merged yet

Findings

breaks money

Solana adapter's payment scan throws when any candidate is a version 1 transaction

src/adapters/solana.ts (line 394) loops over the destination's signatures and calls connection.getTransaction(sig, { maxSupportedTransactionVersion: 0 }) for each. When any of them is a version 1 transaction, @solana/web3.js throws "Transaction version (1) is not supported by the requesting client", which ends the whole scan, so a payment can be missed because of an unrelated v1 transaction to the same address.

Version 1 transactions are a large share of mainnet now (about 40% of non-vote transactions in a block I sampled; 115 of 332 in another), so this depends only on which wallet or SDK built the transaction.

  • src/adapters/solana.ts:394
getTransaction(<v1 signature>, { maxSupportedTransactionVersion: 0 })  -> error -32015 "Transaction version (1) is not supported by the requesting client"
getTransaction(<v1 signature>, { maxSupportedTransactionVersion: 1 })  -> the transaction (version 1, meta present)

Fix: maxSupportedTransactionVersion: 1. @solana/web3.js 1.99.0 or later parses v1 fine with it (tested); 1.98.x rejects a version 1 answer even when asked, so it needs the bump too.

What we measured

WhatResultHowChecked
Reported to themDexter-DAO/dexter-x402-sdk/issues/86, posted 2026-10-29https://github.com/Dexter-DAO/dexter-x402-sdk/issues/86Oct 29, 2026, 3:02 PM UTC
StatusOpen: no fix merged yetGitHub issue Dexter-DAO/dexter-x402-sdk#86Oct 31, 2026, 1:55 AM UTC

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