xtekky/gpt4free · error · MissingAuthError

No Yupp accounts configured. Set YUPP_API_KEY environment va

Error message

No Yupp accounts configured. Set YUPP_API_KEY environment variable.

What it means

Raised by Yupp.get_models() as a MissingAuthError when no API token can be resolved. The provider tries three sources in order: the api_key argument, AuthManager.load_api_key (env var YUPP_API_KEY / stored auth), then browser cookie scraping via get_cookie_tokens(). Only if all three yield nothing does it raise, because listing models requires a real authenticated call to Yupp's model manager.

Source

Thrown at g4f/Provider/Yupp.py:413

class Yupp(AsyncGeneratorProvider, ProviderModelMixin):
    url = "https://yupp.ai"
    login_url = "https://discord.gg/qXA4Wf4Fsm"
    working = False and has_cloudscraper
    active_by_default = True
    supports_stream = True
    image_cache = True

    @classmethod
    def get_models(cls, api_key: str = None, **kwargs) -> List[str]:
        if not cls.models:
            if not api_key:
                api_key = AuthManager.load_api_key(cls)
            if not api_key:
                api_key = get_cookie_tokens()
            if api_key:
                load_yupp_accounts(api_key)
            else:
                raise MissingAuthError(
                    "No Yupp accounts configured. Set YUPP_API_KEY environment variable."
                )
            api_key = YUPP_ACCOUNTS[0]["token"] if YUPP_ACCOUNTS else None
            manager = YuppModelManager(session=create_scraper(), api_key=api_key)
            models = manager.client.fetch_models()
            if models:
                cls.models_tags = {
                    model.get("name"): manager.processor.generate_tags(model)
                    for model in models
                }
                cls.models = [model.get("name") for model in models]
                cls.image_models = [
                    model.get("name")
                    for model in models
                    if model.get("isImageGeneration")
                ]
                cls.vision_models = [
                    model.get("name")

View on GitHub (pinned to 973504e177)

Solutions

Set the YUPP_API_KEY environment variable to a valid yupp.ai session token
Log in to yupp.ai in a local browser so get_cookie_tokens() can harvest session cookies
Pass api_key explicitly: Yupp.get_models(api_key='...')
Store the key via g4f's AuthManager so load_api_key() finds it

Example fix

# before
models = Yupp.get_models()

# after
import os
os.environ['YUPP_API_KEY'] = 'your-yupp-session-token'
models = Yupp.get_models()

Defensive patterns

Strategy: validation

Validate before calling

import os
from g4f.Provider.Yupp import get_cookie_tokens

def yupp_credentials_present(api_key=None):
    return bool(api_key or os.getenv('YUPP_API_KEY') or get_cookie_tokens())

# call before Yupp.get_models()

Try / catch

from g4f.errors import MissingAuthError
try:
    models = Yupp.get_models()
except MissingAuthError:
    models = []  # or prompt user for YUPP_API_KEY

Prevention

Set YUPP_API_KEY in the deployment environment rather than relying on browser cookies
Skip Yupp in provider lists when no credential is detected
Cache the model list so get_models() is not called on every request

When it happens

Trigger: Calling g4f.Provider.Yupp.get_models() (directly or via client.get_models()) on a machine with no YUPP_API_KEY environment variable, no saved auth file, and no yupp.ai session cookies in the local browser cookie store.

Common situations: Fresh installs/headless servers (no browser cookies exist), CI containers, or environments where the auth file was cleared. Users who assume model listing is public and needs no key.

Related errors

AI-assisted analysis of xtekky/gpt4free@973504e177 (2026-08-14). Data as JSON: /api/errors/ebbdb9f3cb4bdc31. Report an issue: GitHub.