import { Transaction, VersionedTransaction } from '@solana/web3.js';
export declare const serializeTransaction: (transaction: Transaction | VersionedTransaction) => string;
export declare const deserializeTransaction: (serializedTransaction: string) => VersionedTransaction;
export declare const optimizeSolanaTransaction: (environmentId: string, transaction: Transaction | VersionedTransaction, address: string) => Promise<VersionedTransaction>;
/**
 * Sponsors a Solana transaction using the Grid API via our backend.
 * This covers network fees so users don't need SOL for gas.
 *
 * Uses direct fetch to avoid SDK API client dependency version issues.
 */
export declare const sponsorSolanaTransaction: (environmentId: string, transaction: Transaction | VersionedTransaction) => Promise<VersionedTransaction>;
/**
 * Returns the Solana gas sponsor address (fee payer) for the environment
 * via our backend, so integrators can build sponsored transactions
 * without hardcoding it.
 */
export declare const getSolanaSponsorAddress: (environmentId: string) => Promise<string>;