| mcp_servers. uses unsupported `bearer_token`; set… | validation | error | |
| missing host in network proxy address | validation | error | |
| `permission_profile` and `default_permissions` overrides… | validation | error | |
| thread-store unsupported operation | exception | error | |
| unsupported OAuth HTTP redirect policy | exception | error | |
| duplicate agent role name | validation | error | |
| either threadId or conversationId must be provided | validation | error | |
| failed to sign host cert | exception | error | |
| failed to write OAuth tokens to keyring | exception | error | |
| features.multi_agent_v2.default_wait_timeout_ms must be at… | validation | error | codex, config, multi-agent, timeouts |
| GetNamedSecurityInfoW failed for | exception | error | |
Interrupted filesystem walk cancelled | exception | error | |
| model item in payload | exception | error | |
| No diff turn found | exception | error | |
| runner: pipe closed before spawn_request | exception | error | |
FlagAlreadyReady Flag is already ready. Impossible to subscribe | exception | error | |
| returned a pagination cursor exceeding bytes | exception | error | |
| --sandbox-state-disable-network cannot be applied to a… | exception | error | |
| signed websocket bearer secret | validation | error | |
| memory summary artifact does not start with v1 | validation | error | |
| No MCP server named ' ' found in configuration. | validation | error | |
| path ` ` is not a regular file | validation | error | |
| path ` ` is not absolute | exception | error | |
| secret_file must be an absolute path | validation | error | |
| conversation item disappeared during code-cell output… | exception | error | |
| elicitation request not found | exception | error | |
| failed to resize console to | exception | error | |
| login error page template must render | panic | error | |
| network.proxy_url must use a fixed non-zero port for… | validation | error | |
| timed out after ms waiting for runner spawn_ready | exception | error | |
| unexpected device-code login response | exception | error | |
| ChatGPT account ID not available, please re-run `codex… | exception | error | |
| Forking with output options requires a prompt | exception | error | |
| helper destination has no parent | exception | error | |
| network proxy attribution token is too long | exception | error | |
| OAuth HTTP request timed out | exception | error | |
| the workload identity assertion exceeds 16 KiB | exception | error | |
| timed out waiting for goal turn to start after | exception | error | |
| turn is not registered for streaming | exception | error | |
| managed Codex binary | exception | error | |
| refusing to use symlink lock file | exception | error | |
| Review prompt cannot be empty | validation | error | |
| rules prefix_rule at index | validation | error | |
| the workload identity federation rule ID must not be empty | exception | error | |
| thread already has an active goal operation | exception | error | |
| before thread cannot be specified without a section | validation | error | |
| ChatGPT connectors require Codex backend auth | exception | error | |
| default_permissions refers to unknown built-in profile | validation | error | |
| guardian review completed without an assessment payload | exception | error | |
| only restricted managed filesystem permissions can be… | exception | error | |
| pet frame count exceeds maximum | validation | error | |
| animation must include at least one frame | validation | error | |
| code cell initial response referenced unknown cell | exception | error | |
| file ` ` is too large: bytes exceeds the limit of bytes | validation | error | |
HelperSandboxDirCreateFailed failed to create sandbox dir | error_code | error | |
InvalidFormat invalid ID token format | exception | error | |
| MCP event request _meta must be a JSON object, got | validation | error | |
| Unsupported Codex config override value at | validation | error | |
| AllocateAndInitializeSid failed | exception | error | |
| codex-linux-sandbox was required but not provided | exception | error | |
| environment registry configuration error | exception | error | |
| file read block length must be between 1 and | exception | error | |
| filesystem subpath ` ` must be a descendant path without… | validation | error | |
| path has no parent directory | exception | error | |
| Remote control is disabled on | exception | error | |
| remote control pairing status accepts either pairingCode or… | validation | error | |
| secret_env_var must not be empty | validation | error | |
TokenLockFailed Failed to acquire readiness token lock | exception | error | |
| Unable to locate the pinned Codex runtime. Install the… | exception | error | |
| could not resolve to any address | exception | error | |
| failed to read websocket auth secret | exception | error | |
| guardian assessment was not valid JSON | exception | error | |
| invalid Noise channel public key | exception | error | |
| invalid unix timestamp seconds | exception | error | |
| Luna response exceeded the output limit | exception | warning | rust, output-limit, guardian, codex |
| network proxy restricting SID requires the elevated Windows… | exception | error | |
| path ` ` is not a file | validation | error | |
| seccomp backend error | exception | error | |
| command is required | validation | error | cli, codex, mcp, stdio, argument-validation |
| compaction install used thread , but codex turn belongs to | exception | error | |
| hosted MCP event server was removed | exception | error | |
| managed MITM CA cert path is missing a parent | exception | error | |
| no thread with id | exception | error | |
| status history thread-usage state poisoned | panic | error | |
| AsyncCodex is not initialized yet. Prefer `async with… | exception | error | |
| ConvertStringSidToSidW failed for | exception | error | |
| default_permissions requires a `[permissions]` table | validation | error | |
| failed to install Codex.app to any applications directory | exception | error | |
| Failed to parse item | exception | error | |
| filesystem glob path | validation | error | |
| invalid server name ' ' (use letters, numbers, '-', '_') | validation | error | |
| startup CA bundle contained an invalid trusted certificate | exception | error | |
| unix sockets not supported | exception | error | |
| Could not find home directory | exception | error | |
| failed to connect to exec-server websocket | exception | error | |
| failed to deserialize agent role file at | validation | error | |
TimedOut timed out discarding buffered terminal input | exception | error | |
| `--ws-token-file` and `--ws-token-sha256` are mutually… | validation | error | |
| code cell start used thread | exception | error | |
| `codex queue` does not support image attachments | validation | error | |