| missing parent directory | exception | error | |
| approval_mode must be one of | exception | error | |
| environment ` ` is already registered with a different… | exception | error | |
| failed to generate CA cert | exception | error | |
| failed to join blocking rules update task | exception | error | |
| schema missing definitions | exception | error | |
| Noise channel handshake failed | exception | error | |
| terminal input stream closed during startup | exception | error | |
| failed to load configured marketplace snapshot(s) | exception | error | |
| git command ` ` failed with status | exception | error | |
| Session not found | exception | error | |
| thread has a section name without a section id | exception | error | |
| Windows sandbox is only available on Windows | exception | error | |
| AdjustTokenPrivileges error | exception | error | |
| animation fallback does not exist | validation | error | |
| failed to decode code-mode IPC frame | exception | error | |
| failed to read CODEX_HOME | exception | error | |
| GetStdHandle failed | exception | error | |
| LookupPrivilegeValueW failed | exception | error | |
| MCP runtime refresh semaphore closed | exception | error | |
| received a second code-mode client hello | exception | error | |
| runner: unsupported protocol version | exception | error | |
| unsupported image | validation | error | |
| websocket auth secret | validation | error | |
| failed to decode image at | exception | error | |
| Failed to read project hooks config file | exception | error | |
| invalid DSN | exception | error | |
| returned a repeated pagination cursor | exception | error | |
| missing sandboxed command in windows sandbox wrapper request | validation | error | |
| path | validation | error | rust, memories, validation, path, codex |
| remote exec-server API-key authentication is restricted to… | exception | error | |
| rules prefix_rule at index | validation | error | |
| runner error | exception | error | |
| SetHandleInformation failed | exception | error | |
| status history agents summary state poisoned | panic | error | |
| failed to parse agent role file at | validation | error | |
| features.token_budget.reminder_message_template must not… | validation | error | |
| cannot contain duplicates | validation | error | |
| foreground app-server exited before remote control became… | exception | error | |
| fragments are not allowed in path URIs | exception | error | |
| must not be empty | validation | error | |
| requirements layer has no base directory | exception | error | |
| schema definition collision in | exception | error | |
| timed out connecting to exec-server websocket | exception | error | |
| --user or --current-user is required | validation | error | |
| Ephemeral forks require a prompt | exception | error | |
| failed to initialize in-process app-server client | exception | error | |
| invalid Noise channel message | exception | error | |
| must match ^[a-zA-Z0-9_-]+$ | validation | error | |
| path contains a symbolic link | validation | error | |
| code cell start referenced unknown thread | exception | error | |
| codex-linux-sandbox executable not found | panic | error | |
| exec-server transport closed | exception | error | |
| failed to openpty | exception | error | |
| OAuth HTTP request exceeded | exception | error | |
| path escapes the repository root | exception | error | |
| section does not exist | validation | error | |
| turn.error.message | exception | error | |
| zsh fork feature enabled, but no packaged zsh fork is… | exception | error | |
| at least one search directory is required | validation | error | |
| --codex-home is required with --user | validation | error | |
| CopySid(TokenUser) failed | exception | error | |
| curl download failed with | exception | error | |
| cursor | validation | error | rust, memories, pagination, cursor, codex |
| Expected generated params model or dict, got | exception | error | |
| built-in pinned thread section cannot be renamed | validation | error | |
| expected namespace to be an object | exception | error | |
| failed to create MCP OAuth | exception | error | |
| failed to create policy directory | exception | error | |
| Forking with images requires a prompt | exception | error | |
| invalid SID string | exception | error | |
| path must be absolute | validation | error | |
| plugin ` ` in marketplace ` ` matched multiple marketplace… | validation | error | |
| project not found | validation | error | |
| remote exec-server registration requires ChatGPT… | exception | error | |
| Unknown feature flag | validation | error | |
| Codex config override at | validation | error | |
| compaction install referenced unknown codex turn | exception | error | |
| failed to serialize network rule field | exception | error | |
| model conversation mismatch while reducing turn | exception | error | |
| remote exec-server registration URL must include a host | exception | error | |
| rules prefix_rules cannot be empty | validation | error | |
| `codex agents` does not accept an initial prompt or images | validation | error | |
| CreatePipe stderr failed | exception | error | |
| HTTP request failed | exception | error | |
| invalid decision | exception | error | |
| exceeded the pagination limit of pages | exception | error | |
| OpenAI file blob upload to | http | error | |
| sandboxed filesystem operations require ReadOnly or… | validation | error | |
| TokenUser size query returned 0 | exception | error | |
| `additional_developer_instructions` from | validation | error | |
| Codex config overrides must be a plain object | validation | error | |
| Codex process is not running | exception | error | |
| failed to parse OpenAI file response from | exception | error | |
| may only contain ASCII letters, digits, spaces, hyphens… | validation | error | |
| starlark error | exception | error | |
| the workload identity token exchange returned an invalid… | exception | error | |
| turn failed with status | exception | error | |
| agents. .config_file must point to a file | validation | error | |
| CreatePipe stdin failed | exception | error | |