import type { ModelCallContract, RequestAttribution } from "@velum-labs/routekit-contracts";
export type GatewayDialect = "openai-chat" | "openai-embeddings" | "anthropic-messages" | "openai-responses";
export declare const MODEL_CALL_ID_HEADER = "x-routekit-model-call-id";
export declare const UNKNOWN_GIT_SHA = "unknown";
export declare function resolveProducerGitSha(fromDir?: string): string;
export declare function readProducerVersion(fromDir?: string, fallback?: string): string;
export type ModelGatewayCallContext = {
    callId: string;
    dialect: GatewayDialect;
    requestedModel: string | undefined;
    model: string | undefined;
    stream: boolean;
    requestBody: unknown;
    startedAt: string;
    endpointId?: string;
    attribution?: RequestAttribution;
};
export type ModelGatewayCallResult = {
    statusCode: number;
    responseBody?: Buffer;
    durationMs: number;
    error?: unknown;
};
export type ModelCallRecord = ModelCallContract;
export type ProvenanceSink = {
    onModelCall?(record: ModelCallRecord): void;
    onModelCallRaw?(context: ModelGatewayCallContext, result: ModelGatewayCallResult): void;
};
export declare function buildModelCallRecord(context: ModelGatewayCallContext, result: ModelGatewayCallResult): ModelCallRecord;
export declare function modelCallId(): string;
export declare function responseBodyHash(body: Buffer): string;