import type { FastifyInstance } from "fastify";
import type { GraphNode, GraphTree } from "@/types";
import type { Context } from "../agents/context.js";
type MemoryRoutesRuntime = {
    memory: {
        readGraph: (ctx: Context) => Promise<GraphTree>;
        readNode: (ctx: Context, nodeId: string) => Promise<GraphNode | null>;
    };
};
export type GraphTreeJson = {
    root: GraphNode;
    children: Record<string, GraphNode[]>;
};
/**
 * Registers engine API routes for graph-memory read access.
 * Expects: runtime.memory methods are safe for user-scoped reads.
 */
export declare function serverMemoryRoutesRegister(app: FastifyInstance, runtime: MemoryRoutesRuntime): void;
/**
 * Converts graph tree maps into plain JSON objects for API responses.
 * Expects: GraphTree is already normalized by graphTreeBuild.
 */
export declare function graphTreeJsonBuild(tree: GraphTree): GraphTreeJson;
export {};
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