{"record":{"id":"f23f890b8a9dae27","repo":"unslothai/unsloth","slug":"the-callback-url-did-not-contain-an-authorization","errorCode":null,"errorMessage":"The callback URL did not contain an authorization code.","messagePattern":"The callback URL did not contain an authorization code\\.","errorType":"exception","errorClass":"CodexAuthError","httpStatus":400,"severity":"warning","filePath":"studio/backend/core/inference/openai_codex_auth.py","lineNumber":625,"sourceCode":"    flow = get_flow(provider_id, flow_id)\n    if flow.method != \"browser\" or flow.status != \"pending\" or flow.consumed:\n        raise CodexAuthError(\"Authorization flow is no longer active.\")\n    parsed = urlparse(callback_url)\n    expected = urlparse(flow.redirect_uri)\n    if (\n        parsed.scheme != expected.scheme\n        or parsed.hostname != expected.hostname\n        or parsed.port != expected.port\n        or parsed.path != expected.path\n        or parsed.fragment\n    ):\n        raise CodexAuthError(\"Paste the complete localhost ChatGPT callback URL.\")\n    query = parse_qs(parsed.query)\n    if not secrets.compare_digest(query.get(\"state\", [\"\"])[0], flow.state):\n        raise CodexAuthError(\"Authorization state did not match.\")\n    code = query.get(\"code\", [\"\"])[0]\n    if not code:\n        raise CodexAuthError(\"The callback URL did not contain an authorization code.\")\n    await _exchange_code(flow, code)\n    return flow\n\n\nasync def cancel_flow(flow_id: str) -> None:\n    flow = _flows.pop(flow_id, None)\n    if not flow:\n        return\n    flow.status = \"cancelled\"\n    if flow.task:\n        flow.task.cancel()\n    if flow.cleanup_task and flow.cleanup_task is not asyncio.current_task():\n        flow.cleanup_task.cancel()\n    if flow.server:\n        flow.server.close()\n        await flow.server.wait_closed()\n\n","sourceCodeStart":607,"sourceCodeEnd":643,"githubUrl":"https://github.com/unslothai/unsloth/blob/203007d19051dcd2ae33876786d117c99f6b0368/studio/backend/core/inference/openai_codex_auth.py#L607-L643","documentation":"Raised as CodexAuthError by complete_browser_flow as the final check before token exchange: the callback URL is structurally valid and the state matches, but the 'code' query parameter is absent or empty. OpenAI always appends code on a successful consent; an absent code usually means the redirect carried an error (e.g. error=access_denied) or the URL was truncated right where the code begins.","triggerScenarios":"User denied the ChatGPT consent so the redirect contains error=access_denied with no code; the pasted URL was cut off before &code=...; query parameters reordered/dropped by a URL handler; consent timed out server-side redirecting with an error.","commonSituations":"Consent denial is the most common case; over-eager copy tools truncating long URLs at line breaks; messaging apps splitting the URL; the user copying while the page was mid-redirect.","solutions":["If consent was denied, restart the flow and approve the ChatGPT permission prompt.","Re-copy the complete callback URL — the code parameter is long and often the truncated part.","Paste into a plain text editor first to verify the full query string survived.","Check the URL for an error= parameter; its value tells you why OpenAI omitted the code."],"exampleFix":"// before\nawait codex_auth.complete_browser_flow(provider_id, flow_id, url_without_code)\n\n// after\nfrom urllib.parse import urlparse, parse_qs\nq = parse_qs(urlparse(callback_url).query)\nif not q.get(\"code\"):\n    raise ValueError(f\"callback missing code; error={q.get('error')}\")\nawait codex_auth.complete_browser_flow(provider_id, flow_id, callback_url)","handlingStrategy":"validation","validationCode":"q = parse_qs(urlparse(callback_url).query)\nif not q.get(\"code\", [\"\"])[0]:\n    err = q.get(\"error\", [\"unknown\"])[0]\n    reject(f\"no authorization code (error={err}); user likely denied consent\")","typeGuard":"def callback_has_code(callback_url: str) -> bool:\n    from urllib.parse import urlparse, parse_qs\n    return bool(parse_qs(urlparse(callback_url).query).get(\"code\", [\"\"])[0])","tryCatchPattern":"try:\n    flow = await codex_auth.complete_browser_flow(provider_id, flow_id, pasted)\nexcept codex_auth.CodexAuthError as exc:\n    if \"did not contain an authorization code\" in str(exc):\n        ask_user_to_recopy_or_reapprove()  # truncated paste or denied consent\n    else:\n        raise","preventionTips":["Check for a code= parameter client-side and surface the error= reason when present.","Copy the entire URL; the code is the longest parameter and truncates first.","Handle access_denied with a friendly 'permission denied' message.","Paste via plain text to avoid smart-copy mangling."],"tags":["oauth","callback-url","consent-denied","validation","codex"],"backgroundTag":null,"analyzedSha":"203007d19051dcd2ae33876786d117c99f6b0368","analyzedAt":"2026-08-15T02:48:39.846Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}