solana-kit

Build a transaction message with pipe by setting the fee payer, blockhash lifetime, and instructions, then call signTransactionMessageWithSigners and pass the result to sendAndConfirmTransactionFactory with your RPC and subscriptions clients.

@solana/kit is a tree-shakeable, zero-dependency rewrite with functional composition instead of classes, native Ed25519 crypto, and full TypeScript types. The @solana/compat package converts legacy keypairs, public keys, and transactions to Kit types.

Use createKeyPairSignerFromBytes with a Uint8Array of the secret key. For base58 keys from Phantom, decode with bs58 first; for Solana CLI keypairs, parse the JSON array into a Uint8Array.

The blockhash expired before confirmation, usually because signing or sending took too long. Fetch a fresh blockhash and rebuild the transaction, then retry; the skill includes a retry helper for this case.

Yes, createSolanaRpcSubscriptions connects over WebSocket and supports account, slot, signature, program, logs, and root notifications. Subscriptions are consumed with async iterators and can be cancelled with an AbortController.

Create and extend an address lookup table with @solana-program/address-lookup-table, fetch it with fetchAddressLookupTable, and attach it to a version 0 transaction using setTransactionMessageAddressLookupTable to compress account references.