import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import type { ToolContext } from "../tool-context.js";
/** "long" ttl from spec §3.3 — one hour. */
export declare const KNOWLEDGE_TTL_MS = 3600000;
export interface KnowledgeSpec {
    name: string;
    uri: string;
    op: string;
    args: Record<string, unknown>;
    description: string;
}
export declare const KNOWLEDGE_RESOURCES: KnowledgeSpec[];
/** Time-boxed value cache. Errors are never stored. */
export declare class KnowledgeCache {
    private readonly ttlMs;
    private readonly now;
    private readonly entries;
    constructor(ttlMs?: number, now?: () => number);
    get(key: string): unknown | undefined;
    set(key: string, value: unknown): void;
    clear(): void;
    get size(): number;
}
export declare const knowledgeCache: KnowledgeCache;
export declare function registerKnowledgeResources(server: McpServer, ctx: ToolContext): void;