xtekky/gpt4free · error · RuntimeError

All Antigravity endpoints failed. Last error: {last_error}

Error message

All Antigravity endpoints failed. Last error: {last_error}

What it means

The provider iterates its BASE_URLS list, trying each Antigravity API endpoint in turn; this error means every endpoint raised an exception or returned a non-200 status. The last error encountered is embedded, so the message tells you whether the final failure was a network exception or an HTTP status code.

Source

Thrown at g4f/Provider/needs_auth/Antigravity.py:568

                                method,
                                body,
                                is_retry=True,
                                use_auth_headers=use_auth_headers,
                            )
                        elif resp.ok:
                            self._working_base_url = base_url  # Cache working URL
                            return await resp.json()
                        else:
                            last_error = f"HTTP {resp.status}: {await resp.text()}"
                            debug.log(
                                f"Antigravity endpoint {base_url} returned {resp.status}"
                            )
            except Exception as e:
                last_error = str(e)
                debug.log(f"Antigravity endpoint {base_url} failed: {e}")
                continue

        raise RuntimeError(
            f"All Antigravity endpoints failed. Last error: {last_error}"
        )

    def get_working_base_url(self) -> str:
        """Get the cached working base URL or default to first in list."""
        return self._working_base_url or BASE_URLS[0]

    @classmethod
    def build_authorization_url(cls, project_id: str = "") -> Tuple[str, str, str]:
        """
        Build OAuth authorization URL with PKCE.

        Returns:
            Tuple of (authorization_url, verifier, state)
        """
        verifier, challenge = generate_pkce_pair()
        state = encode_oauth_state(verifier, project_id)

View on GitHub (pinned to 973504e177)

Solutions

Read last_error in the message: 'HTTP 401/403' -> re-authenticate (token expired or revoked); 'HTTP 429' -> back off and retry later; connection/DNS errors -> check network and proxy.
Retry after a delay; transient upstream failures on all endpoints usually resolve.
Re-run the login flow to mint a fresh access token.
Check Google Cloud status page for Antigravity/Gemini Code Assist outages.

Example fix

// caller-side retry with backoff
import asyncio
from g4f.Provider.needs_auth import Antigravity

async def call_with_retry():
    for attempt in range(3):
        try:
            return await Antigravity.auth_manager.call_endpoint(method="loadCodeAssist", body={...})
        except RuntimeError as e:
            if attempt == 2 or "HTTP 4" in str(e):
                raise
            await asyncio.sleep(2 ** attempt)

Defensive patterns

Strategy: retry

Try / catch

try:
    result = await antigravity.call_endpoint(...)
except RuntimeError as e:
    if "All Antigravity endpoints failed" in str(e):
        if "HTTP 401" in str(e) or "HTTP 403" in str(e):
            raise  # auth problem: do not retry
        await asyncio.sleep(backoff)  # 429/5xx/network: retry

Prevention

Wrap call_endpoint in exponential-backoff retry for 5xx/429 last_error values
Keep the access token fresh so 401s do not consume endpoint attempts
Monitor Google Cloud status when multiple mirrors fail simultaneously

When it happens

Trigger: call_endpoint() loops over BASE_URLS; each attempt either throws (DNS failure, timeout, TLS error) or returns non-200 (401 unauthorized, 403, 429, 5xx). After the loop, RuntimeError with last_error is raised. A 429 or 5xx on all mirrors means upstream outage/quota exhaustion; a 401 on all means the access token is bad.

Common situations: Google Cloud/Antigravity service outage or regional blocking; rate limiting after heavy use; expired access token combined with a failed refresh; local network blocking googleapis domains.

Related errors

AI-assisted analysis of xtekky/gpt4free@973504e177 (2026-08-14). Data as JSON: /api/errors/865e8469c1bfc964. Report an issue: GitHub.