Server handler

import { createChatGPTHandler } from "@opencoredev/loginwithchatgpt-server";

const auth = createChatGPTHandler(options);

Returns a ChatGPTHandler:

interface ChatGPTHandler {
  basePath: string;
  handler: (request: Request) => Promise<Response>;
  fetch: (request: Request) => Promise<Response>; // alias of handler
  proxyFetch: (request: Request) => typeof fetch;
  getSession: (request: Request) => Promise<PublicSession>;
  getModels: (request: Request) => Promise<string[] | undefined>;
  dangerouslyGetTokens: (request: Request, options?: { includeRefreshToken?: boolean }) => Promise<ChatGPTTokens | undefined>;
  /** @deprecated Prefer proxyFetch(), /responses, or /models. */
  getTokens: (request: Request, options?: { includeRefreshToken?: boolean }) => Promise<ChatGPTTokens | undefined>;
}

Mount handler at ${basePath}/*. It only requires Web-standard Request, Response, fetch, and crypto.subtle, so use it in runtimes that provide those APIs. The routes it serves are documented in HTTP routes.

Options

Server options

responsesProxy

Codex request defaults

Applied to proxied /responses bodies when the request does not set them (see request normalization):

Upstream configuration

Inherited from ChatGPTConfig. Override only when you know why (core reference): clientId, issuer, scope, codexBaseUrl, originator, clientVersion, fetch.

Helpers

All three read the session cookie from the request and are safe in any server context (route handlers, server components, middleware).

getSession(request)

Returns public state without touching upstream:

const session = await auth.getSession(request);
// { status: "authenticated", user: { accountId, email, name, plan } }
// or { status: "unauthenticated" | "pending" | "expired" | "error" }

proxyFetch(request)

Creates a request-scoped fetch that carries the user's session cookie back through the mounted handler. Use it when you want a custom server route with AI SDK control, but you do not want application code to receive bearer tokens:

import { createChatGPTProxyProvider } from "@opencoredev/loginwithchatgpt-ai";
import { streamText } from "ai";

export async function POST(request: Request) {
  const chatgpt = createChatGPTProxyProvider({
    fetch: auth.proxyFetch(request),
  });
  const { prompt } = await request.json();

  const result = streamText({ model: chatgpt(), prompt });
  return result.toUIMessageStreamResponse();
}

The provider still calls /api/chatgpt/responses and /api/chatgpt/models; the handler loads, refreshes, and injects credentials internally.

getModels(request)

Returns the account's model slugs, or undefined when unauthenticated. Refreshes tokens before calling upstream. Throws ChatGPTAuthError with code models_request_failed on upstream failure.

dangerouslyGetTokens(request, options?)

Disabled unless createChatGPTHandler({ dangerouslyAllowTokenExport: true }) is set. When enabled, returns a fresh access token plus account id, with the refresh token redacted by default.

Exporting bearer tokens moves trust from the SDK boundary into your application code: server code can log, copy, or forward them. Prefer proxyFetch(request) for request handling. Only enable this for advanced integrations that intentionally accept that custody model.

const tokens = await auth.dangerouslyGetTokens(request);
// { accessToken, accountId, expiresAt } with no refreshToken

const exported = await auth.dangerouslyGetTokens(request, {
  includeRefreshToken: true,
});
// Requires dangerouslyAllowRefreshTokenExport: true. Use only for migration/export flows.

Session storage

Sessions are stored under the cookie's session id. When secret is set, token JSON is AES-GCM encrypted before writing. The store contract:

interface KeyValueStore<T> {
  get(key: string): Promise<T | undefined> | T | undefined;
  set(key: string, value: T, options?: { ttlMs?: number }): Promise<void> | void;
  delete(key: string): Promise<void> | void;
}

MemoryStore (exported for tests and local dev) enforces TTL lazily at read time. How the cookie, store, and refresh cycle fit together is covered in Sessions & tokens.