{"record":{"id":"76235324c5570391","repo":"HKUDS/Vibe-Trading","slug":"the-codex-backend-rejected-the-access-token-and-re","errorCode":null,"errorMessage":"The Codex backend rejected the access token and refresh did not replace it","messagePattern":"The Codex backend rejected the access token and refresh did not replace it","errorType":"exception","errorClass":"CodexAuthenticationError","httpStatus":null,"severity":"critical","filePath":"agent/src/providers/openai_codex.py","lineNumber":381,"sourceCode":"            return token\n\n        try:\n            refreshed = _refresh_codex_token(token, storage)\n        except _CodexRefreshError as exc:\n            if exc.permanent:\n                _clear_codex_token(storage)\n                raise CodexAuthenticationError(\"The Vibe-Trading Codex OAuth session was invalidated\") from exc\n            if not force_refresh and _token_expiry_ms(token) > now_ms:\n                return token\n            raise CodexStreamError(\n                exc.status_code or 503,\n                f\"Codex OAuth recovery temporarily failed: {exc}\",\n            ) from exc\n        if refreshed.access == token.access:\n            if not force_refresh and _token_expiry_ms(token) > now_ms:\n                return token\n            _clear_codex_token(storage)\n            raise CodexAuthenticationError(\"The Codex backend rejected the access token and refresh did not replace it\")\n        return refreshed\n\n\ndef validate_codex_base_url(url: str) -> str:\n    \"\"\"Validate the only supported ChatGPT Codex OAuth endpoint.\n\n    ChatGPT OAuth tokens must not be sent to arbitrary OpenAI-compatible base\n    URLs. The standard OpenAI API remains API-key authenticated; this provider\n    is limited to the ChatGPT Codex backend endpoint used by Codex OAuth.\n    \"\"\"\n    value = (url or DEFAULT_CODEX_URL).strip().rstrip(\"/\")\n    parsed = urlparse(value)\n    if parsed.scheme != \"https\" or parsed.netloc != \"chatgpt.com\" or parsed.path != \"/backend-api/codex/responses\":\n        raise ValueError(\"OpenAI Codex OAuth only supports https://chatgpt.com/backend-api/codex/responses\")\n    return value\n\n\ndef _build_headers(account_id: str, access_token: str) -> dict[str, str]:","sourceCodeStart":363,"sourceCodeEnd":399,"githubUrl":"https://github.com/HKUDS/Vibe-Trading/blob/80ffdda44c5c4db0dd84d70e051cca591cea67df/agent/src/providers/openai_codex.py#L363-L399","documentation":"After a forced refresh, the server returned the exact same access token that was just rejected, meaning the token is dead and refresh cannot rotate it. The library clears storage and raises CodexAuthenticationError; user re-login is required.","triggerScenarios":"Backend rejected the access token (401), forced refresh succeeded but refreshed.access == token.access, i.e. the endpoint did not issue a new token — a stuck/invalidated session.","commonSituations":"Server-side session invalidation where refresh silently echoes the old token; clock skew or corrupted token files causing rejected-but-returned tokens.","solutions":["Run interactive Codex login again to obtain a brand-new OAuth session","Delete the stored token file under runtime auth dir if login still sees stale state, then log in","Check that only one process performs refreshes (file locking) to avoid session corruption"],"exampleFix":"# before\nCodexAuthenticationError: The Codex backend rejected the access token and refresh did not replace it\n\n# after\nvibe-trading provider login openai-codex  # fresh interactive login","handlingStrategy":"try-catch","validationCode":"status = get_openai_codex_login_status()\nif not status.token_present:\n    raise SystemExit('login required')","typeGuard":null,"tryCatchPattern":"try:\n    resp = stream_request()\nexcept CodexAuthenticationError:\n    login_openai_codex()  # interactive re-login\n    resp = stream_request()","preventionTips":["Automate a re-login path when CodexAuthenticationError is caught","Keep a single owning process for token refresh to avoid corruption"],"tags":["oauth","codex","token-rejected","re-authentication"],"backgroundTag":"access-token-rejected","analyzedSha":"80ffdda44c5c4db0dd84d70e051cca591cea67df","analyzedAt":"2026-08-28T12:46:38.989Z","schemaVersion":2},"datasetVersion":"2026-08-28T16:17:29.566Z"}