import "../tools/web/providers/duckduckgo.js";
import "../tools/web/providers/brave.js";
import "../tools/web/providers/tavily.js";
import "../tools/web/providers/exa.js";
export declare function isSearchProviderId(value: string): boolean;
export interface SetSearchKeyOptions {
    fromEnv?: string | undefined;
    stdin?: boolean | undefined;
}
export declare function setSearchProviderKey(providerValue: string, keyArg: string | undefined, options?: SetSearchKeyOptions): Promise<void>;
export declare function unsetSearchProviderKey(providerValue: string): Promise<void>;
/** Set the active search provider used by `web.search`. */
export declare function useSearchProvider(providerValue: string): Promise<void>;
export declare function printSearchProviderKeys(): Promise<void>;