{"record":{"id":"827e2ede01feb787","repo":"router-for-me/CLIProxyAPI","slug":"oauth-error-s-827e2e","errorCode":null,"errorMessage":"OAuth error: %s","messagePattern":"OAuth error: (.+?)","errorType":"http","errorClass":null,"httpStatus":400,"severity":"error","filePath":"internal/auth/codex/oauth_server.go","lineNumber":187,"sourceCode":"\tif r.Method != http.MethodGet {\n\t\thttp.Error(w, \"Method not allowed\", http.StatusMethodNotAllowed)\n\t\treturn\n\t}\n\n\t// Extract parameters\n\tquery := r.URL.Query()\n\tcode := query.Get(\"code\")\n\tstate := query.Get(\"state\")\n\terrorParam := query.Get(\"error\")\n\n\t// Validate required parameters\n\tif errorParam != \"\" {\n\t\tlog.Errorf(\"OAuth error received: %s\", errorParam)\n\t\tresult := &OAuthResult{\n\t\t\tError: errorParam,\n\t\t}\n\t\ts.sendResult(result)\n\t\thttp.Error(w, fmt.Sprintf(\"OAuth error: %s\", errorParam), http.StatusBadRequest)\n\t\treturn\n\t}\n\n\tif code == \"\" {\n\t\tlog.Error(\"No authorization code received\")\n\t\tresult := &OAuthResult{\n\t\t\tError: \"no_code\",\n\t\t}\n\t\ts.sendResult(result)\n\t\thttp.Error(w, \"No authorization code received\", http.StatusBadRequest)\n\t\treturn\n\t}\n\n\tif state == \"\" {\n\t\tlog.Error(\"No state parameter received\")\n\t\tresult := &OAuthResult{\n\t\t\tError: \"no_state\",\n\t\t}","sourceCodeStart":169,"sourceCodeEnd":205,"githubUrl":"https://github.com/router-for-me/CLIProxyAPI/blob/78f0c4079e3e6273d65d03b5549cffc898703264/internal/auth/codex/oauth_server.go#L169-L205","documentation":"The Codex OAuth callback received an error query parameter: the authorization server (ChatGPT/Codex OAuth) rejected the request and redirected with ?error=... per OAuth2 RFC 6749. The handler logs it, forwards OAuthResult{Error: errorParam} to the waiting login flow, and returns HTTP 400 \"OAuth error: <errorParam>\".","triggerScenarios":"Redirect to /callback?error=access_denied after the user denies consent; ?error=invalid_request/invalid_scope/invalid_client from a malformed or misregistered authorization request during `codex login`.","commonSituations":"User cancels the OpenAI/ChatGPT consent page; org policies blocking the app; expired or revoked client credentials; requesting scopes the Codex client is not entitled to.","solutions":["Inspect the error code: access_denied → user declined, retry and approve; invalid_scope/invalid_client → fix the client registration or scopes","Re-run the login command; the failed result is already propagated to the CLI which will print the reason","Verify account/org permissions for the Codex CLI app on the provider side"],"exampleFix":null,"handlingStrategy":"fallback","validationCode":"// provider-side error; nothing to pre-validate locally. After the flow:\nresult, err := server.WaitForCode(ctx)\nif err == nil && result.Error != \"\" { switch result.Error {\n    case \"access_denied\": /* user denied; retry login */\n    default: /* surface result.Error, check client registration */\n} }","typeGuard":"func oauthFailed(r *OAuthResult) bool { return r != nil && r.Error != \"\" }","tryCatchPattern":"result, err := server.WaitForCode(ctx)\nif err != nil { return fmt.Errorf(\"oauth wait: %w\", err) }\nif result.Error != \"\" { return fmt.Errorf(\"codex oauth error: %s\", result.Error) }","preventionTips":["Verify the Codex CLI app registration and org policy before login","Handle result.Error in wrappers so users see the provider's reason","Re-run login after fixing the underlying error code"],"tags":["codex","oauth","authorization","callback"],"backgroundTag":null,"analyzedSha":"78f0c4079e3e6273d65d03b5549cffc898703264","analyzedAt":"2026-08-15T12:26:37.444Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}