config-sample.md Codex Docs, 2026-02-21 00:33 UTC → 2026-02-24 00:33 UTC

49# model_context_window = 128000 # tokens; default: auto for model49# model_context_window = 128000 # tokens; default: auto for model

50# model_auto_compact_token_limit = 0 # tokens; unset uses model defaults50# model_auto_compact_token_limit = 0 # tokens; unset uses model defaults

51# tool_output_token_limit = 10000 # tokens stored per tool output; default: 10000 for gpt-5.2-codex51# tool_output_token_limit = 10000 # tokens stored per tool output; default: 10000 for gpt-5.2-codex

52# model_catalog_json = "/absolute/path/to/models.json" # optional startup-only model catalog override

53# background_terminal_max_timeout = 300000 # ms; max empty write_stdin poll window (default 5m)

52# log_dir = "/absolute/path/to/codex-logs" # directory for Codex logs; default: "$CODEX_HOME/log"54# log_dir = "/absolute/path/to/codex-logs" # directory for Codex logs; default: "$CODEX_HOME/log"

53 55 

54################################################################################56################################################################################

107# - untrusted: only known-safe read-only commands auto-run; others prompt109# - untrusted: only known-safe read-only commands auto-run; others prompt

108# - on-request: model decides when to ask (default)110# - on-request: model decides when to ask (default)

109# - never: never prompt (risky)111# - never: never prompt (risky)

112# - { reject = { ... } }: auto-reject selected prompt categories

110approval_policy = "on-request"113approval_policy = "on-request"

114# Example granular auto-reject policy:

115# approval_policy = { reject = { sandbox_approval = true, rules = false, mcp_elicitations = false } }

116 

117# Allow login-shell semantics for shell-based tools when they request `login = true`.

118# Default: true. Set false to force non-login shells and reject explicit login-shell requests.

119allow_login_shell = true

111 120 

112# Filesystem/network sandbox policy for tool calls:121# Filesystem/network sandbox policy for tool calls:

113# - read-only (default)122# - read-only (default)

138# Optional fixed port for MCP OAuth callback: 1-65535. Default: unset.147# Optional fixed port for MCP OAuth callback: 1-65535. Default: unset.

139# mcp_oauth_callback_port = 4321148# mcp_oauth_callback_port = 4321

140 149 

150# Optional redirect URI override for MCP OAuth login (for example, remote devbox ingress).

151# Custom callback paths are supported. `mcp_oauth_callback_port` still controls the listener port.

152# mcp_oauth_callback_url = "https://devbox.example.internal/callback"

153 

141################################################################################154################################################################################

142# Project Documentation Controls155# Project Documentation Controls

143################################################################################156################################################################################

194# Active profile name. When unset, no profile is applied.207# Active profile name. When unset, no profile is applied.

195# profile = "default"208# profile = "default"

196 209 

210################################################################################

211# Agents (multi-agent roles and limits)

212################################################################################

213 

214# [agents]

215# Maximum concurrently open agent threads. Default: 6

216# max_threads = 6

217# Maximum nested spawn depth. Root session starts at depth 0. Default: 1

218# max_depth = 1

219 

220# [agents.reviewer]

221# description = "Find security, correctness, and test risks in code."

222# config_file = "./agents/reviewer.toml" # relative to the config.toml that defines it

223 

197################################################################################224################################################################################

198# Skills (per-skill overrides)225# Skills (per-skill overrides)

199################################################################################226################################################################################

276# Control alternate screen usage (auto skips it in Zellij to preserve scrollback).303# Control alternate screen usage (auto skips it in Zellij to preserve scrollback).

277# alternate_screen = "auto"304# alternate_screen = "auto"

278 305 

279# Ordered list of footer status-line item IDs. Default: null (disabled).306# Ordered list of footer status-line item IDs. When unset, Codex uses:

307# ["model-with-reasoning", "context-remaining", "current-dir"].

308# Set to [] to hide the footer.

280# status_line = ["model", "context-remaining", "git-branch"]309# status_line = ["model", "context-remaining", "git-branch"]

281 310 

311# Syntax-highlighting theme (kebab-case). Use /theme in the TUI to preview and save.

312# You can also add custom .tmTheme files under $CODEX_HOME/themes.

313# theme = "catppuccin-mocha"

314 

282# Control whether users can submit feedback from `/feedback`. Default: true315# Control whether users can submit feedback from `/feedback`. Default: true

283[feedback]316[feedback]

284enabled = true317enabled = true

301 334 

302[features]335[features]

303# Leave this table empty to accept defaults. Set explicit booleans to opt in/out.336# Leave this table empty to accept defaults. Set explicit booleans to opt in/out.

304shell_tool = true337# shell_tool = true

305# apps = false338# apps = false

306# apps_mcp_gateway = false339# apps_mcp_gateway = false

307# Deprecated legacy toggles; prefer the top-level `web_search` setting.

308# web_search = false

309# web_search_cached = false340# web_search_cached = false

310# web_search_request = false341# web_search_request = false

311unified_exec = false342# unified_exec = false

312shell_snapshot = false343# shell_snapshot = false

313apply_patch_freeform = false344# apply_patch_freeform = false

345# multi_agent = false

314# search_tool = false346# search_tool = false

315# personality = true347# personality = true

316request_rule = true348# request_rule = true

317collaboration_modes = true349# collaboration_modes = true

318use_linux_sandbox_bwrap = false350# use_linux_sandbox_bwrap = false

319experimental_windows_sandbox = false351# experimental_windows_sandbox = false

320elevated_windows_sandbox = false352# elevated_windows_sandbox = false

321remote_models = false353# remote_models = false

322runtime_metrics = false354# runtime_metrics = false

323powershell_utf8 = true355# powershell_utf8 = true

324child_agents_md = false356# child_agents_md = false

325 357 

326################################################################################358################################################################################

327# Define MCP servers under this table. Leave empty to disable.359# Define MCP servers under this table. Leave empty to disable.

411# model_verbosity = "medium"443# model_verbosity = "medium"

412# personality = "friendly" # or "pragmatic" or "none"444# personality = "friendly" # or "pragmatic" or "none"

413# chatgpt_base_url = "https://chatgpt.com/backend-api/"445# chatgpt_base_url = "https://chatgpt.com/backend-api/"

446# model_catalog_json = "./models.json"

414# experimental_compact_prompt_file = "./compact_prompt.txt"447# experimental_compact_prompt_file = "./compact_prompt.txt"

415# include_apply_patch_tool = false448# include_apply_patch_tool = false

416# experimental_use_unified_exec_tool = false449# experimental_use_unified_exec_tool = false

424 457 

425# Optional per-app controls.458# Optional per-app controls.

426[apps]459[apps]

460# [_default] applies to all apps unless overridden per app.

461# [apps._default]

462# enabled = true

463# destructive_enabled = true

464# open_world_enabled = true

465#

427# [apps.google_drive]466# [apps.google_drive]

428# enabled = false467# enabled = false

429# disabled_reason = "user" # or "unknown"468# destructive_enabled = false # block destructive-hint tools for this app

469# default_tools_enabled = true

470# default_tools_approval_mode = "prompt" # auto | prompt | approve

471#

472# [apps.google_drive.tools."files/delete"]

473# enabled = false

474# approval_mode = "approve"

430 475 

431################################################################################476################################################################################

432# Projects (trust levels)477# Projects (trust levels)