export declare function stateLoad(key: string, scope: string, defaultValue: string): string;
export declare function stateSave(key: string, value: string, scope: string): void;
export declare function vectorIndex(collection: string, text: string, chunkSize: number): string;
export declare function vectorQuery(collection: string, query: string, topK: number): Promise<string>;
export declare function jsonParse(input: string, jsonPath: string): string;
export declare function diffInject(repoPath: string, base: string, head: string, maxTokens: number): string;
export declare function notify(channel: string, webhookUrl: string, message: string): Promise<string>;
export declare function semanticCacheLookup(query: string, ttlMinutes: number, threshold: number): Promise<string | null>;
export declare function semanticCacheStore(query: string, result: string, ttlMinutes: number): void;
export declare function takeScreenshot(url: string, viewport: {
    width: number;
    height: number;
}, waitMs: number): Promise<string>;
export declare function sandboxExec(image: string, command: string, mount: string | undefined, timeoutMs: number): string;
export declare function costGate(budgetUsd: number, executionSteps: Record<string, {
    inputTokens?: number;
    outputTokens?: number;
}>, action: string): string;
export declare function astParse(filePath: string, extracts: string[]): string;
export declare function embedCompare(textA: string, textB: string): Promise<string>;
export declare function graphWrite(triples: Array<{
    subject: string;
    predicate: string;
    object: string;
}>): string;
export declare function graphRead(subject?: string, predicate?: string): string;
export declare function parallelFetch(urls: string[], rateLimitMs: number, timeoutMs: number): Promise<string>;
export declare function templateRender(template: string, data: Record<string, unknown>): string;
export declare function createApprovalRequest(executionId: string, stepId: string, title: string, description: string, expiresHours: number): string;
export declare function closeExtraDbs(): void;