config-basic.md Codex Docs, 2026-04-20 06:53 UTC → 2026-04-24 12:28 UTC

46Choose the model Codex uses by default in the CLI and IDE.46Choose the model Codex uses by default in the CLI and IDE.

47 47 

48```toml48```toml

49model = "gpt-5.4"49model = "gpt-5.5"

50```50```

51 51 

52#### Approval prompts52#### Approval prompts

155| `personality` | true | Stable | Enable personality selection controls |155| `personality` | true | Stable | Enable personality selection controls |

156| `shell_snapshot` | true | Stable | Snapshot your shell environment to speed up repeated commands |156| `shell_snapshot` | true | Stable | Snapshot your shell environment to speed up repeated commands |

157| `shell_tool` | true | Stable | Enable the default `shell` tool |157| `shell_tool` | true | Stable | Enable the default `shell` tool |

158| `guardian_approval` | false | Experimental | Route eligible approval requests through the guardian reviewer subagent (set `approvals_reviewer = "guardian_subagent"`). |

159| `unified_exec` | `true` except Windows | Stable | Use the unified PTY-backed exec tool |158| `unified_exec` | `true` except Windows | Stable | Use the unified PTY-backed exec tool |

160| `undo` | false | Stable | Enable undo via per-turn git ghost snapshots |159| `undo` | false | Stable | Enable undo via per-turn git ghost snapshots |

161| `web_search` | true | Deprecated | Legacy toggle; prefer the top-level `web_search` setting |160| `web_search` | true | Deprecated | Legacy toggle; prefer the top-level `web_search` setting |