import { toolCategoryValues, type AccessTier, type ToolDescriptor } from "./toolMetadata.js";
export type PolicySettings = {
    accessTier: AccessTier;
    categoryAllowlist: string[];
    toolBlacklist: string[];
    toolWhitelist: string[];
    moduleMode: "core" | "advanced";
};
export declare const loadPolicySettings: () => PolicySettings;
export type ConfirmGuard = {
    ok: boolean;
    message?: string;
    impact?: string;
};
export declare class PolicyEngine {
    private readonly settings;
    constructor(settings: PolicySettings);
    shouldRegister(descriptor: ToolDescriptor, transport: "stdio" | "http"): boolean;
    guardConfirmation(descriptor: ToolDescriptor, args: Record<string, unknown>): ConfirmGuard;
    private isTransportCompatible;
}
export declare const isKnownToolCategory: (value: string) => value is (typeof toolCategoryValues)[number];
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