import type { Mode } from "../types.js";
export type PromptSectionKind = "safety" | "mode" | "outcome" | "plan" | "scope" | "recovery" | "focus" | "constitution" | "context";
export interface AgentPromptSection {
    readonly kind: PromptSectionKind;
    readonly content: string;
    readonly mandatory?: boolean;
}
export interface AgentPromptContext {
    readonly mode: Mode;
    readonly nativeToolsActive: boolean;
    readonly sections: readonly AgentPromptSection[];
    readonly maxTokens?: number | undefined;
}
export interface ComposedPrompt {
    readonly content: string;
    readonly included: readonly PromptSectionKind[];
    readonly omitted: readonly PromptSectionKind[];
    readonly estimatedTokens: number;
}
/** Canonical composer used immediately before every provider request. */
export declare function composeAgentSystemPrompt(ctx: AgentPromptContext): ComposedPrompt;