import type { PermissionMode } from "@hmbown/kytchen-protocol";
export interface JsonSchema {
    type: string;
    properties?: Record<string, JsonSchema>;
    required?: string[];
    items?: JsonSchema;
    description?: string;
    enum?: unknown[];
    [key: string]: unknown;
}
export interface ToolDefinition {
    /** Unique tool name. */
    name: string;
    /** Human-readable description. */
    description: string;
    /** JSON Schema for tool parameters. */
    parameters: JsonSchema;
    /** Default permission policy. */
    defaultPolicy: PermissionMode;
    /** If true, tool is considered high-risk (defaults to ask/deny). */
    highRisk?: boolean;
    /** Tags for grouping/filtering. */
    tags?: string[];
}
export interface ToolExecutionResult {
    output: unknown;
    error?: string;
    durationMs: number;
}
export type ToolHandler = (args: Record<string, unknown>, signal?: AbortSignal) => Promise<ToolExecutionResult>;
interface RegisteredTool {
    definition: ToolDefinition;
    handler: ToolHandler;
}
export declare class ToolRegistry {
    private readonly tools;
    register(definition: ToolDefinition, handler: ToolHandler): void;
    unregister(name: string): boolean;
    get(name: string): RegisteredTool | undefined;
    has(name: string): boolean;
    list(): ToolDefinition[];
    listByTag(tag: string): ToolDefinition[];
    /** Get the handler for a tool. Throws if not registered. */
    getHandler(name: string): ToolHandler;
}
export {};
//# sourceMappingURL=registry.d.ts.map