config-sample.md Codex Docs, 2026-02-23 18:27 UTC → 2026-03-04 06:20 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"

55# sqlite_home = "/absolute/path/to/codex-state" # optional SQLite-backed runtime state directory

53 56 

54################################################################################57################################################################################

55# Reasoning & Verbosity (Responses API capable models)58# Reasoning & Verbosity (Responses API capable models)

107# - untrusted: only known-safe read-only commands auto-run; others prompt110# - untrusted: only known-safe read-only commands auto-run; others prompt

108# - on-request: model decides when to ask (default)111# - on-request: model decides when to ask (default)

109# - never: never prompt (risky)112# - never: never prompt (risky)

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

110approval_policy = "on-request"114approval_policy = "on-request"

115# Example granular auto-reject policy:

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

117 

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

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

120allow_login_shell = true

111 121 

112# Filesystem/network sandbox policy for tool calls:122# Filesystem/network sandbox policy for tool calls:

113# - read-only (default)123# - read-only (default)

138# Optional fixed port for MCP OAuth callback: 1-65535. Default: unset.148# Optional fixed port for MCP OAuth callback: 1-65535. Default: unset.

139# mcp_oauth_callback_port = 4321149# mcp_oauth_callback_port = 4321

140 150 

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

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

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

154 

141################################################################################155################################################################################

142# Project Documentation Controls156# Project Documentation Controls

143################################################################################157################################################################################

194# Active profile name. When unset, no profile is applied.208# Active profile name. When unset, no profile is applied.

195# profile = "default"209# profile = "default"

196 210 

211################################################################################

212# Agents (multi-agent roles and limits)

213################################################################################

214 

215# [agents]

216# Maximum concurrently open agent threads. Default: 6

217# max_threads = 6

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

219# max_depth = 1

220# Default timeout per worker for spawn_agents_on_csv jobs. When unset, the tool defaults to 1800 seconds.

221# job_max_runtime_seconds = 1800

222 

223# [agents.reviewer]

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

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

226 

197################################################################################227################################################################################

198# Skills (per-skill overrides)228# Skills (per-skill overrides)

199################################################################################229################################################################################

200 230 

201# Disable or re-enable a specific skill without deleting it.231# Disable or re-enable a specific skill without deleting it.

202[[skills.config]]232[[skills.config]]

203# path = "/path/to/skill"233# path = "/path/to/skill/SKILL.md"

204# enabled = false234# enabled = false

205 235 

206################################################################################236################################################################################

276# Control alternate screen usage (auto skips it in Zellij to preserve scrollback).306# Control alternate screen usage (auto skips it in Zellij to preserve scrollback).

277# alternate_screen = "auto"307# alternate_screen = "auto"

278 308 

279# Ordered list of footer status-line item IDs. Default: null (disabled).309# Ordered list of footer status-line item IDs. When unset, Codex uses:

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

311# Set to [] to hide the footer.

280# status_line = ["model", "context-remaining", "git-branch"]312# status_line = ["model", "context-remaining", "git-branch"]

281 313 

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

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

316# theme = "catppuccin-mocha"

317 

282# Control whether users can submit feedback from `/feedback`. Default: true318# Control whether users can submit feedback from `/feedback`. Default: true

283[feedback]319[feedback]

284enabled = true320enabled = true

301 337 

302[features]338[features]

303# Leave this table empty to accept defaults. Set explicit booleans to opt in/out.339# Leave this table empty to accept defaults. Set explicit booleans to opt in/out.

304shell_tool = true340# shell_tool = true

305# apps = false341# apps = false

306# apps_mcp_gateway = false342# apps_mcp_gateway = false

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

308# web_search = false

309# web_search_cached = false343# web_search_cached = false

310# web_search_request = false344# web_search_request = false

311unified_exec = false345# unified_exec = false

312shell_snapshot = false346# shell_snapshot = false

313apply_patch_freeform = false347# apply_patch_freeform = false

348# multi_agent = false

314# search_tool = false349# search_tool = false

315# personality = true350# personality = true

316request_rule = true351# request_rule = true

317collaboration_modes = true352# collaboration_modes = true

318use_linux_sandbox_bwrap = false353# use_linux_sandbox_bwrap = false

319experimental_windows_sandbox = false354# remote_models = false

320elevated_windows_sandbox = false355# runtime_metrics = false

321remote_models = false356# powershell_utf8 = true

322runtime_metrics = false357# child_agents_md = false

323powershell_utf8 = true

324child_agents_md = false

325 358 

326################################################################################359################################################################################

327# Define MCP servers under this table. Leave empty to disable.360# Define MCP servers under this table. Leave empty to disable.

411# model_verbosity = "medium"444# model_verbosity = "medium"

412# personality = "friendly" # or "pragmatic" or "none"445# personality = "friendly" # or "pragmatic" or "none"

413# chatgpt_base_url = "https://chatgpt.com/backend-api/"446# chatgpt_base_url = "https://chatgpt.com/backend-api/"

447# model_catalog_json = "./models.json"

414# experimental_compact_prompt_file = "./compact_prompt.txt"448# experimental_compact_prompt_file = "./compact_prompt.txt"

415# include_apply_patch_tool = false449# include_apply_patch_tool = false

416# experimental_use_unified_exec_tool = false450# experimental_use_unified_exec_tool = false

424 458 

425# Optional per-app controls.459# Optional per-app controls.

426[apps]460[apps]

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

462# [apps._default]

463# enabled = true

464# destructive_enabled = true

465# open_world_enabled = true

466#

427# [apps.google_drive]467# [apps.google_drive]

428# enabled = false468# enabled = false

429# disabled_reason = "user" # or "unknown"469# destructive_enabled = false # block destructive-hint tools for this app

470# default_tools_enabled = true

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

472#

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

474# enabled = false

475# approval_mode = "approve"

430 476 

431################################################################################477################################################################################

432# Projects (trust levels)478# Projects (trust levels)

477# client-certificate = "/etc/codex/certs/client.pem"523# client-certificate = "/etc/codex/certs/client.pem"

478# client-private-key = "/etc/codex/certs/client-key.pem"524# client-private-key = "/etc/codex/certs/client-key.pem"

479```525```

526 

527################################################################################

528 

529# Windows

530 

531################################################################################

532 

533[windows]

534 

535# Native Windows sandbox mode (Windows only): unelevated | elevated

536 

537sandbox = "unelevated"