import type { ChatMessage, ToolDefinition } from "../types.js";
export interface ContextBreakdown {
    readonly estimatedTotalTokens: number;
    readonly systemTokens: number;
    readonly userTokens: number;
    readonly assistantTokens: number;
    readonly toolResultTokens: number;
    readonly toolSchemaTokens: number;
    readonly messageCount: number;
    readonly systemMessageCount: number;
    readonly userMessageCount: number;
    readonly assistantMessageCount: number;
    readonly toolMessageCount: number;
    readonly systemParts: {
        readonly constitutionTokens: number;
        readonly planTokens: number;
        readonly scopeTokens: number;
        readonly sessionStateTokens: number;
        readonly compactionMemoryTokens: number;
        readonly otherSystemTokens: number;
    };
    readonly toolDefinitionCount: number;
}
export declare function buildContextBreakdown(messages: readonly ChatMessage[], tools?: readonly ToolDefinition[] | undefined): ContextBreakdown;
export declare function contextBreakdownAuditPayload(breakdown: ContextBreakdown): Record<string, number>;
export declare function describeDominantContextBlock(messages: readonly ChatMessage[], tools?: readonly ToolDefinition[] | undefined): string;
export declare function toolSchemaHash(tools: readonly ToolDefinition[] | undefined): string;