config-basic diff

config-basic.md +19 −7

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1# Config basics1# Config basics

2 2

~~3Learn the basics of configuring your local Codex client~~

5Codex reads configuration details from more than one location. Your personal defaults live in `~/.codex/config.toml`, and you can add project overrides with `.codex/config.toml` files. For security, Codex loads project config files only when you trust the project.3Codex reads configuration details from more than one location. Your personal defaults live in `~/.codex/config.toml`, and you can add project overrides with `.codex/config.toml` files. For security, Codex loads project config files only when you trust the project.

6 4

7## Codex configuration file5## Codex configuration file

13The CLI and IDE extension share the same configuration layers. You can use them to:11The CLI and IDE extension share the same configuration layers. You can use them to:

14 12

15- Set the default model and provider.13- Set the default model and provider.

~~16- Configure [approval policies and sandbox settings](https://developers.openai.com/codex/security).~~14- Configure [approval policies and sandbox settings](https://developers.openai.com/codex/security#sandbox-and-approvals).

17- Configure [MCP servers](https://developers.openai.com/codex/mcp).15- Configure [MCP servers](https://developers.openai.com/codex/mcp).

18 16

19## Configuration precedence17## Configuration precedence

35 33

36On managed machines, your organization may also enforce constraints via34On managed machines, your organization may also enforce constraints via

37 `requirements.toml` (for example, disallowing `approval_policy = "never"` or35 `requirements.toml` (for example, disallowing `approval_policy = "never"` or

~~38`sandbox_mode = "danger-full-access"`). See [Security](https://developers.openai.com/codex/security).~~36 `sandbox_mode = "danger-full-access"`). See [Managed

37configuration](https://developers.openai.com/codex/security#managed-configuration) and [Admin-enforced

38 requirements](https://developers.openai.com/codex/enterprise/managed-configuration#admin-enforced-requirements-requirementstoml).

39 39

40## Common configuration options40## Common configuration options

41 41

57approval_policy = "on-request"57approval_policy = "on-request"

58```58```

59 59

60For behavior differences between `untrusted`, `on-request`, and `never`, see [Run without approval prompts](https://developers.openai.com/codex/security#run-without-approval-prompts) and [Common sandbox and approval combinations](https://developers.openai.com/codex/security#common-sandbox-and-approval-combinations).

60#### Sandbox level62#### Sandbox level

61 63

62Adjust how much filesystem and network access Codex has while executing commands.64Adjust how much filesystem and network access Codex has while executing commands.

65sandbox_mode = "workspace-write"67sandbox_mode = "workspace-write"

66```68```

67 69

70For mode-by-mode behavior (including protected `.git`/`.codex` paths and network defaults), see [Sandbox and approvals](https://developers.openai.com/codex/security#sandbox-and-approvals), [Protected paths in writable roots](https://developers.openai.com/codex/security#protected-paths-in-writable-roots), and [Network access](https://developers.openai.com/codex/security#network-access).

72#### Windows sandbox mode

74When running Codex natively on Windows, set the native sandbox mode to `elevated` in the `windows` table. Use `unelevated` only if you do not have administrator permissions or if elevated setup fails.

76```toml

77[windows]

78sandbox = "elevated" # Recommended

79# sandbox = "unelevated" # Fallback if admin permissions/setup are unavailable

80```

68#### Web search mode82#### Web search mode

69 83

70Codex enables web search by default for local tasks and serves results from a web search cache. The cache is an OpenAI-maintained index of web results, so cached mode returns pre-indexed results instead of fetching live pages. This reduces exposure to prompt injection from arbitrary live content, but you should still treat web results as untrusted. If you are using `--yolo` or another [full access sandbox setting](https://developers.openai.com/codex/security), web search defaults to live results. Choose a mode with `web_search`:84Codex enables web search by default for local tasks and serves results from a web search cache. The cache is an OpenAI-maintained index of web results, so cached mode returns pre-indexed results instead of fetching live pages. This reduces exposure to prompt injection from arbitrary live content, but you should still treat web results as untrusted. If you are using `--yolo` or another [full access sandbox setting](https://developers.openai.com/codex/security#common-sandbox-and-approval-combinations), web search defaults to live results. Choose a mode with `web_search`:

71 85

72- `"cached"` (default) serves results from the web search cache.86- `"cached"` (default) serves results from the web search cache.

73- `"live"` fetches the most recent data from the web (same as `--search`).87- `"live"` fetches the most recent data from the web (same as `--search`).

config-basic.md Codex Docs, 2026-02-19 20:37 UTC → 2026-03-05 06:22 UTC