import type { AgentMessage } from "@mariozechner/pi-agent-core";
/**
 * OpenAI can reject replayed `function_call` items with an `fc_*` id if the
 * matching `reasoning` item is absent in the same assistant turn.
 *
 * When that pairing is missing, strip the `|fc_*` suffix from tool call ids so
 * pi-ai omits `function_call.id` on replay.
 */
export declare function downgradeOpenAIFunctionCallReasoningPairs(messages: AgentMessage[]): AgentMessage[];
/**
 * OpenAI Responses API can reject transcripts that contain a standalone `reasoning` item id
 * without the required following item.
 *
 * Fased persists provider-specific reasoning metadata in `thinkingSignature`; if that metadata
 * is incomplete, drop the block to keep history usable.
 */
export declare function downgradeOpenAIReasoningBlocks(messages: AgentMessage[]): AgentMessage[];
