import { type SecurityGuardrails } from "./guardrails.js";
export interface SlackToolPolicyTurn {
    threadTs: string | undefined;
    threadCount: number;
}
export declare const GUARDED_CORE_TOOLS: Set<string>;
export declare function isGuardedCoreTool(toolName: string): boolean;
export declare function getGuardrailToolName(toolName: string): string;
export declare function summarizeCoreToolAction(event: {
    toolName: string;
    input: Record<string, unknown>;
}): string;
export declare function evaluateSlackOriginCoreToolPolicy(options: {
    turn: SlackToolPolicyTurn | null;
    toolName: string;
    input: Record<string, unknown>;
    guardrails: SecurityGuardrails;
    requireToolPolicy: (toolName: string, threadTs: string | undefined, action: string) => void;
    formatAction: (action: string) => string;
    formatError: (error: unknown) => string;
}): {
    block: true;
    reason: string;
} | undefined;