import { GetProgramAccountsFilter, PublicKey } from "@solana/web3.js";
import type { Pool } from "./types";
export interface ProtocolFetcher {
    protocol: string;
    kind: "lend" | "vault";
    programId: PublicKey;
    dataSize: number;
    discriminator?: string;
    extraFilters?: GetProgramAccountsFilter[];
    postFilter?(pool: Pool): Pool | null;
    decode(address: PublicKey, data: Buffer): Pool;
}
export declare function registerProtocol(fetcher: ProtocolFetcher): void;
export declare function listProtocols(): readonly ProtocolFetcher[];