import type { AgentNativeActionManifestEntry, AgentNativeClientAction, AgentNativeClientActionRuntime } from "./host-bridge.js";
export type AgentNativeClientActionRunner<TArgs, TResult> = (args: TArgs, runtime: AgentNativeClientActionRuntime) => TResult | Promise<TResult>;
export type AgentNativeClientActionDefinition<TArgs, TResult> = AgentNativeActionManifestEntry & {
    run: AgentNativeClientActionRunner<TArgs, TResult>;
};
export declare function defineClientAction<TArgs = unknown, TResult = unknown>(action: AgentNativeClientActionDefinition<TArgs, TResult>): AgentNativeClientAction<TArgs, TResult>;