/**
 * MCP App tool registration for skill display UI.
 *
 * Registers:
 * - skill-display: Opens the skill display UI
 * - skill-display-update-invocation: Updates invocation settings (UI-only)
 * - skill-display-reset-override: Resets a skill to frontmatter defaults (UI-only)
 */
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { SkillState } from "./skill-tool.js";
/**
 * Callback type for when invocation settings change.
 */
export type OnInvocationChangedCallback = () => void;
/**
 * Register skill-display MCP App tools and resource.
 *
 * @param server - The MCP server instance
 * @param skillState - Shared skill state for getting skill info
 * @param onInvocationChanged - Callback when invocation settings are changed
 */
export declare function registerSkillDisplayTool(server: McpServer, skillState: SkillState, onInvocationChanged: OnInvocationChangedCallback): void;