# Codex Knowledge Patch > Codex - Skill: `nevaberry/codex-knowledge-patch-2` (Agent Skill, multi-file: 7 files) - Install (CLI): `npx skillmds@latest add nevaberry/codex-knowledge-patch-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/nevaberry/codex-knowledge-patch-2/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - License: MIT - Author: nevaberry (https://skillmd.com/u/nevaberry) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/nevaberry/codex-knowledge-patch-2 --- # Codex Knowledge Patch Use this skill when working with the Codex desktop app, CLI, TUI, remote app server, MCP integrations, cloud tasks, plugins, or collaborative agent workflows. ## Reference index | Reference | Topics | | --- | --- | | [app-and-collaboration.md](references/app-and-collaboration.md) | Desktop platforms, projects, skills, automations, imports, browser and voice context, image review, iOS | | [security-and-configuration.md](references/security-and-configuration.md) | Approval and sandbox modes, flags, feature settings, search, login, policy checks, diagnostics, Windows behavior | | [remote-mcp-and-connectors.md](references/remote-mcp-and-connectors.md) | Remote TUI security, app-server authentication, MCP, connectors, proxied WebSockets, plugin sign-in | | [cli-execution-and-cloud.md](references/cli-execution-and-cloud.md) | Scripted execution, resume and review, cloud tasks, plugin marketplaces, desktop launching | | [tui-and-session-controls.md](references/tui-and-session-controls.md) | Steering, prompt editing, themes, planning, conversation controls, status UI, background commands, subagents | ## Replace deprecated approval behavior Choose among the supported `untrusted`, `on-request`, and `never` approval policies. `on-failure` is deprecated. `--full-auto` combines the `workspace-write` sandbox with `on-request` approvals. `--yolo` bypasses sandboxing and approval prompts, so reserve it for an externally isolated environment. Read [security-and-configuration.md](references/security-and-configuration.md) before changing approval, sandbox, authentication, policy, or search settings. ## Account for hosted Code Mode approvals Since `0.144.0`, Code Mode defaults to hosted mode. Every approval request causes an elicitation pause. The `writes` app-approval mode lets declared read-only app actions proceed without prompting but requires approval for writes. ## Use interactive MCP authentication directly Since `0.144.0`, MCP tools may request interactive authentication without an experimental opt-in. App-server hosts may provide authentication at runtime, hosted login may redirect success to a hosted page, and long-running app sessions refresh expired authentication for the hosted `codex_apps` connector. Read [remote-mcp-and-connectors.md](references/remote-mcp-and-connectors.md) before configuring remote listeners, bearer tokens, MCP servers, connectors, or plugin authentication. ## Expect image-generation routing Since `0.144.0`, image requests use the image-generation extension by default. Attach a reference with `--image` for edits, and quote the literal `$imagegen` name when invoking it from a shell: ```bash codex --image existing.png '$imagegen Extend this asset' ``` The desktop image viewer also supports Focused and Canvas views, annotations, individual selection, and targeted follow-up edits. ## Run scripted work with explicit output contracts Use `codex exec` for non-interactive work. Pass a prompt as an argument or use `-` to read stdin: ```bash printf '%s\n' 'Inventory package licenses' | \ codex exec - --json --output-schema result.schema.json \ --output-last-message final.txt ``` - `--json` emits JSONL state-change events. - `--output-schema` constrains the final response with JSON Schema. - `--output-last-message` writes the final natural-language response alone. - `--ephemeral` avoids saving rollout files. - `--skip-git-repo-check` permits execution outside a Git repository. Resume the latest scripted session for the current directory with: ```bash codex exec resume --last "Continue with the implementation" ``` Interactive and scripted resume retain transcript, plan history, and approvals. Use `--all` to include other directories; use fork when a new thread should retain the source transcript without continuing the same session. ## Connect a remote TUI safely Run the app server where the workspace lives and connect a TUI through an explicit `ws://` or `wss://` URL: ```bash codex app-server --listen ws://127.0.0.1:4500 codex --remote ws://127.0.0.1:4500 ``` For non-local use, put authenticated connections behind TLS. Capability-token authentication uses `--ws-token-file` on the server and `--remote-auth-token-env` on the client. Signed bearer authentication uses an HS256 JWT with an `exp` claim and a shared secret of at least 32 bytes. The client sends bearer tokens only over `wss://` or loopback `ws://`. ## Apply invocation and feature overrides correctly Global options inherited by a subcommand go after the subcommand name. Repeatable `-c key=value` overrides parse JSON when possible and otherwise remain strings. ```bash codex exec --profile work -c 'features.unified_exec=true' \ --full-auto "Run the checks" ``` Use `--cd` to choose the working root without changing the parent shell, and repeat `--add-dir` for additional writable roots: ```bash codex --cd apps/frontend --add-dir ../backend --add-dir ../shared ``` Persist feature choices with `codex features list`, `enable`, and `disable`. Settings go to `~/.codex/config.toml` or the selected profile. `--search` requests live web search for one run; `web_search = "live"` or `"disabled"` persists the choice. ## Submit, inspect, and apply cloud work `codex cloud` opens the task picker. Submit directly to an environment with one to four independent attempts: ```bash codex cloud exec --env ENV_ID --attempts 3 "Summarize open bugs" codex cloud list --env ENV_ID --limit 20 --json codex apply TASK_ID ``` Submission failures exit nonzero. Listing supports cursor pagination, a limit from 1 through 20, and JSON containing a `tasks` array plus an optional `cursor`. Applying a task uses its latest diff, reports changed files, and exits nonzero on `git apply` conflicts. ## Use the desktop collaboration boundary Desktop projects share projects, session history, and configuration with the CLI and IDE extension. Built-in Git worktrees isolate parallel agent threads. In a multi-folder project, the primary folder controls new chats, Git operations, and automatic discovery of `AGENTS.md`, skills, and `config.toml`; secondary folders remain searchable, readable, and editable. Automations combine instructions with optional skills and send scheduled results to a review queue. They require the local computer to remain open. Review aggregates repositories and changed lines across a multi-folder project. ## Use interactive controls deliberately - Press `Enter` during a turn to inject instructions; press `Tab` to queue a prompt, slash command, or `!` command for the next turn. - Use `Ctrl+G` for `VISUAL`/`EDITOR`, `@` for workspace-file search, and an empty composer followed by `Esc` twice to edit and fork from prior prompts. - Use `/clear` for a new conversation and cleared view, `/new` for a new conversation without clearing, and `Ctrl+L` to clear only the display. - Use `/copy` or `Ctrl+O` for the latest completed output, `/fork` to clone the current transcript, and `/agent` to inspect or continue spawned threads. - Use `/plan [PROMPT]` before a task starts and `/fast on`, `/fast off`, or `/fast status` for supported threads. - With `unified_exec`, use `/ps` to inspect background commands and `/stop` to stop all background terminals for the session; `/clean` remains an alias. Subagents are created only when explicitly requested. Configure roles under `[agents]` in `config.toml`, and account for the separate model and tool work performed by every spawned agent. Read [tui-and-session-controls.md](references/tui-and-session-controls.md) for the complete interaction, appearance, status, terminal, and thread controls.