{"record":{"id":"116a5b495c9986fa","repo":"xtekky/gpt4free","slug":"no-proof-token-found-in-har-files","errorCode":null,"errorMessage":"No proof_token found in .har files","messagePattern":"No proof_token found in \\.har files","errorType":"exception","errorClass":"NoValidHarFileError","httpStatus":null,"severity":"error","filePath":"g4f/Provider/openai/har_file.py","lineNumber":202,"sourceCode":"def getBw(bt: int) -> str:\n    return str(bt - (bt % 21600))\n\n\ndef getN() -> str:\n    timestamp = str(int(time.time()))\n    return base64.b64encode(timestamp.encode()).decode()\n\n\nasync def get_request_config(\n    request_config: RequestConfig, proxy: str\n) -> RequestConfig:\n    readHAR(request_config)\n    if request_config.arkose_request is not None:\n        request_config.arkose_token = await sendRequest(\n            genArkReq(request_config.arkose_request), proxy\n        )\n    if request_config.proof_token is None:\n        raise NoValidHarFileError(\"No proof_token found in .har files\")\n    return request_config\n","sourceCodeStart":184,"sourceCodeEnd":204,"githubUrl":"https://github.com/xtekky/gpt4free/blob/973504e1770928ed5fb82f43da528f441ad9ddc3/g4f/Provider/openai/har_file.py#L184-L204","documentation":"Raised at the end of get_request_config(): after readHAR() processed every available .har file, request_config.proof_token is still None. The proof token is extracted from the 'proof_token' entries in the HAR (the OpenAI anti-bot persona/config payload); if no captured request contained it, the flow cannot authenticate and NoValidHarFileError is raised.","triggerScenarios":"All .har files were read but none contained a request/response carrying the proof token (e.g. capture missed the conversation request, or the token lives under a request shape readHAR no longer matches).","commonSituations":"HAR captured on a page load without a chat submission; OpenAI changing the field name/location of the proof token; stale HAR from before an OpenAI frontend update; JSON-valid but truncated HAR exports.","solutions":["Re-capture a fresh HAR: log into chatgpt.com, DevTools > Network on, send one real message, export","Update g4f — proof token extraction is adapted when OpenAI changes the payload","Keep multiple recent .har files; readHAR scans all of them sorted by mtime","If HAR auth keeps failing, switch the OpenAI provider to an api_key-based configuration"],"exampleFix":null,"handlingStrategy":"validation","validationCode":"import json\n\ndef har_has_proof_token(path: str) -> bool:\n    with open(path, 'rb') as f:\n        try:\n            raw = f.read()\n        except OSError:\n            return False\n    return b'proof_token' in raw or b'proofToken' in raw","typeGuard":null,"tryCatchPattern":"from g4f.errors import NoValidHarFileError\ntry:\n    cfg = await get_request_config(request_config, proxy)\nexcept NoValidHarFileError as e:\n    if 'proof_token' in str(e):\n        recapture_har_after_chat_message()\n        raise","preventionTips":["Capture a fresh HAR after OpenAI frontend updates — proof token location changes","Ensure the capture includes at least one conversation POST, not just a page load","Fall back to api_key auth for OpenAI when HAR auth repeatedly lacks proof tokens"],"tags":["openai","har-file","proof-token","auth","bot-detection"],"backgroundTag":null,"analyzedSha":"973504e1770928ed5fb82f43da528f441ad9ddc3","analyzedAt":"2026-08-14T23:45:32.408Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}