import type { LanguageModel } from 'ai';
import type { ValidationCapability } from '../ValidationCapability.js';
export interface GroundingValidatorOptions {
    /** Judge model, run at temperature 0. Use the agent's controlModel-class model. */
    model: LanguageModel;
    /** Extra domain rules appended to the judge prompt (e.g. "never promise refunds"). */
    instructions?: string;
    name?: string;
}
/**
 * State-grounded output validator: checks the assistant reply for action/fact
 * claims unsupported by this turn's tool calls, flow state, or citations —
 * the "order placed" with no create-order call class of hallucination.
 *
 * Repair policy is rewrite-not-block: an ungrounded claim is rewritten out of
 * the reply rather than replacing the whole turn with an apology, so the
 * conversation keeps moving. If the judge flags ungrounded but cannot produce
 * a rewrite, the turn is blocked (fail safe). Judge errors fail open with low
 * confidence — the validator is a gate, not a single point of failure.
 */
export declare function createGroundingValidator(options: GroundingValidatorOptions): ValidationCapability;