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Transaction supportLegacy and versioned transactions both land the same way: signed, sent and touched down in slot N.N
Legacy and versioned transactions both land the same way: signed, sent and touched down in slot N.

Supported transactions

Supported Transaction Types

The relay accepts transactions on the /v1 API in both Solana wire formats:

  • Legacy transactions — fully supported
  • Versioned transactions (v0) — fully supported
  • Maximum transaction size: ~1.6KB per transaction

Both are deserialized as a VersionedTransaction, so you do not need to tell the relay which form you are sending — submit the signed, base64-encoded bytes either way.

Address Lookup Tables (ALT)

Transactions using Address Lookup Tables are rejected because the relay cannot verify the tip destination without resolving the ALT on-chain (error code tip_hidden_in_alt). Keep the tip transfer in static account keys.