export type OpenAIAuthSource = 'config' | 'env' | 'codex-cli' | 'chatgpt-oauth' | 'chatgpt-oauth-expired' | 'no-usable-auth' | 'no-usable-auth-codex-oauth' | 'no-usable-auth-forced-chatgpt-oauth';
export interface OpenAIAuthResolution {
    apiKey: string | null;
    source: OpenAIAuthSource;
    last4?: string;
    envVar?: 'OPENAI_API_KEY' | 'CODEX_API_KEY';
    accountId?: string;
    expiresAt?: number;
}
export interface AuthResolverDeps {
    readEnv?: (key: string) => string | undefined;
    homedir?: () => string;
    readFile?: (path: string) => string | null;
}
export declare function resolveOpenAIAuth(explicitConfigKey: string | undefined, deps?: AuthResolverDeps, forceChatgptOAuth?: boolean): OpenAIAuthResolution;
type CodexAuthParse = {
    kind: 'apikey';
    apiKey: string;
} | {
    kind: 'chatgpt';
    accessToken?: string;
    accountId?: string;
    expiresAt?: number;
} | {
    kind: 'no-key';
} | {
    kind: 'invalid';
};
export declare function parseCodexAuthJson(raw: string): CodexAuthParse;
export declare function decodeJwtClaims(token: string): Record<string, unknown> | null;
export declare function formatAuthDiagnostic(resolution: OpenAIAuthResolution): string;
export {};