import { type CodexAuthCredentials, type CodexChatGptCredentials, type CodexRefreshedTokens } from "./auth.js";
type Fetch = typeof globalThis.fetch;
type CodexCredentialsWriter = (input: {
    readonly credentials: CodexChatGptCredentials;
    readonly tokens: CodexRefreshedTokens;
}) => Promise<CodexChatGptCredentials>;
export interface CodexTransportOptions {
    readonly clientId?: string;
    readonly codexApiEndpoint?: string;
    readonly fetch?: Fetch;
    readonly issuer?: string;
    readonly now?: () => number;
    readonly readCredentials?: () => Promise<CodexAuthCredentials>;
    readonly writeCredentials?: CodexCredentialsWriter;
}
/**
 * AI SDK's OpenAI client gives eve one per-request hook: `fetch`. Codex needs
 * that hook to choose credentials and endpoint per login mode, not just to swap
 * the base URL. API-key logins stay on OpenAI's Responses endpoint; ChatGPT
 * logins use the Codex backend with a refreshed bearer token.
 */
export declare function createCodexFetch(options?: CodexTransportOptions): Fetch;
export declare function rewriteCodexEndpoint(input: string, codexApiEndpoint?: string): string;
export {};