/**
 * visus_context_scan Tool
 * Standalone tool to scan provided history for multi-turn priming risks.
 * Call manually before high-risk tools (visus_fetch, visus_search) if stateful concerns.
 * Integrates with local JSON cache for session persistence.
 */
import type { CallToolRequestHandler } from '@modelcontextprotocol/sdk/types.js';
/**
 * Tool definition
 */
export declare const visusContextScanToolDefinition: {
    readonly name: "visus_context_scan";
    readonly description: "\nDetect multi-turn priming risks in conversation history (e.g., \"save this URL from Page 1\" used in Page 2 tool call). \nScans for stateful chaining attacks. Use before visus_fetch/visus_search when suspicious.\n\nProvides risk score (0-1), primed entities (hashed URLs/IPs/tools), and threats. \nHigh risk (>0.7) triggers HITL confirmation. Persists primed hashes in local session cache.\n\nInput history should include last 5-10 messages. priorExtractions optional (from prior visus tools).\n  ";
    readonly strict: true;
    readonly inputSchema: {
        readonly type: "object";
        readonly properties: {
            readonly sessionId: {
                readonly type: "string";
                readonly description: "Session ID for cache persistence (auto-generated if missing)";
            };
            readonly history: {
                readonly type: "array";
                readonly items: {
                    readonly type: "string";
                };
                readonly minItems: 1;
                readonly description: "Conversation history (last 5-10 messages recommended)";
            };
            readonly priorExtractions: {
                readonly type: "array";
                readonly description: "Prior visus_fetch/search/read outputs (metadata only, 3-5 recommended)";
            };
            readonly currentTool: {
                readonly type: "string";
                readonly enum: readonly ["visus_fetch", "visus_search", "visus_read"];
                readonly description: "Current tool call for cross-reference (required)";
            };
        };
        readonly required: readonly ["history", "currentTool"];
        readonly additionalProperties: false;
    };
    readonly readOnlyHint: true;
    readonly destructiveHint: false;
    readonly idempotentHint: true;
    readonly openWorldHint: false;
};
/**
 * visus_context_scan implementation
 */
export declare const visusContextScan: CallToolRequestHandler;
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