{"record":{"id":"1ca3a7543422a19d","repo":"BerriAI/litellm","slug":"could-not-reach-the-proxy-at-start-url-e-che","errorCode":null,"errorMessage":"Could not reach the proxy at {start_url}: {e}. Check that the proxy is running and that --base-url points at it.","messagePattern":"Could not reach the proxy at (.+?): (.+?)\\. Check that the proxy is running and that --base-url points at it\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"litellm/proxy/client/cli/commands/auth.py","lineNumber":426,"sourceCode":"        return [\n            {\n                \"team_id\": i.get(\"team_id\") or i.get(\"id\"),\n                \"team_alias\": i.get(\"team_alias\"),\n            }\n            for i in team_details\n            if isinstance(i, dict) and (i.get(\"team_id\") or i.get(\"id\"))\n        ]\n    if isinstance(teams, list):\n        return [{\"team_id\": str(t), \"team_alias\": None} for t in teams]\n    return []\n\n\ndef _start_cli_sso_flow(base_url: str) -> CliSsoStartData:\n    start_url: Final = f\"{base_url}/sso/cli/start\"\n    try:\n        response: Final = requests.post(start_url, timeout=10)\n    except requests.RequestException as e:\n        raise ValueError(\n            f\"Could not reach the proxy at {start_url}: {e}. \"\n            \"Check that the proxy is running and that --base-url points at it.\"\n        ) from e\n\n    if response.status_code in (404, 405):\n        raise ValueError(\n            f\"POST {start_url} returned HTTP {response.status_code}. \"\n            \"Either --base-url is wrong, or the proxy is older than this CLI and does not support \"\n            \"the CLI SSO login flow; upgrade the proxy or use a CLI version that matches it.\"\n        )\n    if response.status_code != 200:\n        detail: Final = _response_error_detail(response)\n        raise ValueError(\n            f\"Starting CLI login failed: HTTP {response.status_code} from {start_url}\"\n            + (f\": {detail}\" if detail else \"\")\n        )\n\n    try:","sourceCodeStart":408,"sourceCodeEnd":444,"githubUrl":"https://github.com/BerriAI/litellm/blob/77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8/litellm/proxy/client/cli/commands/auth.py#L408-L444","documentation":"Raised in the CLI SSO login flow when requests.post() to {base_url}/sso/cli/start raises a RequestException — connection refused, DNS failure, or timeout. This means the proxy is unreachable at the given --base-url (not running, wrong URL, or network blocked); the original exception text is embedded and chained.","triggerScenarios":"Thrown at litellm/proxy/client/cli/commands/auth.py:426 when the library encounters an invalid state.","commonSituations":"The CLI could not connect to the proxy to start login.","solutions":["Ensure the proxy is running.","Fix --base-url so it points at the proxy."],"exampleFix":"curl http://localhost:4000/health/liveliness","handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"77b7c6c40c0c5aa5fbcb1d6a1825ac39ca8829b8","analyzedAt":"2026-08-18T11:44:31.656Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}