import type { CompletionRequest } from '../types/messages.js';
import type { SecurityFinding } from '../types/security.js';
/**
 * Validates a request's shape before it is sent.
 *
 * The checks are written out rather than declared through a schema library, so the security
 * pipeline, which runs on every request, adds no dependency to the install.
 */
export declare class SchemaValidator {
    /** Findings for every field that does not match the request schema. */
    validate(request: CompletionRequest): SecurityFinding[];
}