import type { AgentMessage } from "../agent-types.js";
type ThoughtSignatureSanitizeOptions = {
    allowBase64Only?: boolean;
    includeCamelCase?: boolean;
};
/**
 * Strips Claude-style thought_signature fields from content blocks.
 *
 * Gemini expects thought signatures as base64-encoded bytes, but Claude stores message ids
 * like "msg_abc123...". We only strip "msg_*" to preserve any provider-valid signatures.
 */
export declare function stripThoughtSignatures<T>(content: T, options?: ThoughtSignatureSanitizeOptions): T;
export declare function sanitizeGoogleTurnOrdering(messages: AgentMessage[]): AgentMessage[];
export {};