4d201e340e
## Why SQLite state was still being opened from consumer paths, including lazy `OnceCell`-backed thread-store call sites. That let one process construct multiple state DB connections for the same Codex home, which makes SQLite lock contention and `database is locked` failures much easier to hit. State DB lifetime should be chosen by main-like entrypoints and tests, then passed through explicitly. Consumers should use the supplied `Option<StateDbHandle>` or `StateDbHandle` and keep their existing filesystem fallback or error behavior when no handle is available. The startup path also needs to keep the rollout crate in charge of SQLite state initialization. Opening `codex_state::StateRuntime` directly bypasses rollout metadata backfill, so entrypoints should initialize through `codex_rollout::state_db` and receive a handle only after required rollout backfills have completed. ## What Changed - Initialize the state DB in main-like entrypoints for CLI, TUI, app-server, exec, MCP server, and the thread-manager sample. - Pass `Option<StateDbHandle>` through `ThreadManager`, `LocalThreadStore`, app-server processors, TUI app wiring, rollout listing/recording, personality migration, shell snapshot cleanup, session-name lookup, and memory/device-key consumers. - Remove the lazy local state DB wrapper from the thread store so non-test consumers use only the supplied handle or their existing fallback path. - Make `codex_rollout::state_db::init` the local state startup path: it opens/migrates SQLite, runs rollout metadata backfill when needed, waits for concurrent backfill workers up to a bounded timeout, verifies completion, and then returns the initialized handle. - Keep optional/non-owning SQLite helpers, such as remote TUI local reads, as open-only paths that do not run startup backfill. - Switch app-server startup from direct `codex_state::StateRuntime::init` to the rollout state initializer so app-server cannot skip rollout backfill. - Collapse split rollout lookup/list APIs so callers use the normal methods with an optional state handle instead of `_with_state_db` variants. - Restore `getConversationSummary(ThreadId)` to delegate through `ThreadStore::read_thread` instead of a LocalThreadStore-specific rollout path special case. - Keep DB-backed rollout path lookup keyed on the DB row and file existence, without imposing the filesystem filename convention on existing DB rows. - Verify readable DB-backed rollout paths against `session_meta.id` before returning them, so a stale SQLite row that points at another thread's JSONL falls back to filesystem search and read-repairs the DB row. - Keep `debug prompt-input` filesystem-only so a one-off debug command does not initialize or backfill SQLite state just to print prompt input. - Keep goal-session test Codex homes alive only in the goal-specific helper, rather than leaking tempdirs from the shared session test helper. - Update tests and call sites to pass explicit state handles where DB behavior is expected and explicit `None` where filesystem-only behavior is intended. ## Validation - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo check -p codex-rollout -p codex-thread-store -p codex-app-server -p codex-core -p codex-tui -p codex-exec -p codex-cli --tests` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-rollout state_db_` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-rollout find_thread_path` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-rollout find_thread_path -- --nocapture` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-rollout try_init_ -- --nocapture` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-rollout` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo clippy -p codex-rollout --lib -- -D warnings` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-thread-store read_thread_falls_back_when_sqlite_path_points_to_another_thread -- --nocapture` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-thread-store` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core shell_snapshot` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core --test all personality_migration` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core --test all rollout_list_find` - `RUST_MIN_STACK=8388608 CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core --test all rollout_list_find::find_prefers_sqlite_path_by_id -- --nocapture` - `RUST_MIN_STACK=8388608 CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core --test all rollout_list_find -- --nocapture` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core interrupt_accounts_active_goal_before_pausing` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-app-server get_auth_status -- --test-threads=1` - `CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-app-server --lib` - `CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo check -p codex-rollout -p codex-app-server --tests` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-rollout -p codex-thread-store -p codex-core -p codex-app-server -p codex-tui -p codex-exec -p codex-cli` - `CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-rollout -p codex-app-server` - `CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-rollout` - `CODEX_SKIP_VENDORED_BWRAP=1 CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-core` - `just argument-comment-lint -p codex-core` - `just argument-comment-lint -p codex-rollout` Focused coverage added in `codex-rollout`: - `recorder::tests::state_db_init_backfills_before_returning` verifies the rollout metadata row exists before startup init returns. - `state_db::tests::try_init_waits_for_concurrent_startup_backfill` verifies startup waits for another worker to finish backfill instead of disabling the handle for the process. - `state_db::tests::try_init_times_out_waiting_for_stuck_startup_backfill` verifies startup does not hang indefinitely on a stuck backfill lease. - `tests::find_thread_path_accepts_existing_state_db_path_without_canonical_filename` verifies DB-backed lookup accepts valid existing rollout paths even when the filename does not include the thread UUID. - `tests::find_thread_path_falls_back_when_db_path_points_to_another_thread` verifies DB-backed lookup ignores a stale row whose existing path belongs to another thread and read-repairs the row after filesystem fallback. Focused coverage updated in `codex-core`: - `rollout_list_find::find_prefers_sqlite_path_by_id` now uses a DB-preferred rollout file with matching `session_meta.id`, so it still verifies that valid SQLite paths win without depending on stale/empty rollout contents. `cargo test -p codex-app-server thread_list_respects_search_term_filter -- --test-threads=1 --nocapture` was attempted locally but timed out waiting for the app-server test harness `initialize` response before reaching the changed thread-list code path. `bazel test //codex-rs/thread-store:thread-store-unit-tests --test_output=errors` was attempted locally after the thread-store fix, but this container failed before target analysis while fetching `v8+` through BuildBuddy/direct GitHub. The equivalent local crate coverage, including `cargo test -p codex-thread-store`, passes. A plain local `cargo check -p codex-rollout -p codex-app-server --tests` also requires system `libcap.pc` for `codex-linux-sandbox`; the follow-up app-server check above used `CODEX_SKIP_VENDORED_BWRAP=1` in this container.
Codex CLI (Rust Implementation)
We provide Codex CLI as a standalone executable to ensure a zero-dependency install.
Installing Codex
Today, the easiest way to install Codex is via npm:
npm i -g @openai/codex
codex
You can also install via Homebrew (brew install --cask codex) or download a platform-specific release directly from our GitHub Releases.
Documentation quickstart
- First run with Codex? Start with
docs/getting-started.md(links to the walkthrough for prompts, keyboard shortcuts, and session management). - Want deeper control? See
docs/config.mdanddocs/install.md.
What's new in the Rust CLI
The Rust implementation is now the maintained Codex CLI and serves as the default experience. It includes a number of features that the legacy TypeScript CLI never supported.
Config
Codex supports a rich set of configuration options. Note that the Rust CLI uses config.toml instead of config.json. See docs/config.md for details.
Model Context Protocol Support
MCP client
Codex CLI functions as an MCP client that allows the Codex CLI and IDE extension to connect to MCP servers on startup. See the configuration documentation for details.
MCP server (experimental)
Codex can be launched as an MCP server by running codex mcp-server. This allows other MCP clients to use Codex as a tool for another agent.
Use the @modelcontextprotocol/inspector to try it out:
npx @modelcontextprotocol/inspector codex mcp-server
Use codex mcp to add/list/get/remove MCP server launchers defined in config.toml, and codex mcp-server to run the MCP server directly.
Notifications
The legacy notify setting is deprecated and will be removed in a future release. Existing configurations still work, but new automation should use lifecycle hooks instead. The notify documentation explains the remaining compatibility behavior. When Codex detects that it is running under WSL 2 inside Windows Terminal (WT_SESSION is set), the TUI automatically falls back to native Windows toast notifications so approval prompts and completed turns surface even though Windows Terminal does not implement OSC 9.
codex exec to run Codex programmatically/non-interactively
To run Codex non-interactively, run codex exec PROMPT (you can also pass the prompt via stdin) and Codex will work on your task until it decides that it is done and exits. If you provide both a prompt argument and piped stdin, Codex appends stdin as a <stdin> block after the prompt so patterns like echo "my output" | codex exec "Summarize this concisely" work naturally. Output is printed to the terminal directly. You can set the RUST_LOG environment variable to see more about what's going on.
Use codex exec --ephemeral ... to run without persisting session rollout files to disk.
Experimenting with the Codex Sandbox
To test to see what happens when a command is run under the sandbox provided by Codex, we provide the following subcommands in Codex CLI:
# macOS
codex sandbox macos [--log-denials] [COMMAND]...
# Linux
codex sandbox linux [COMMAND]...
# Windows
codex sandbox windows [COMMAND]...
# Legacy aliases
codex debug seatbelt [--log-denials] [COMMAND]...
codex debug landlock [COMMAND]...
To try a writable legacy sandbox mode with these commands, pass an explicit config override such
as -c 'sandbox_mode="workspace-write"'.
Selecting a sandbox policy via --sandbox
The Rust CLI exposes a dedicated --sandbox (-s) flag that lets you pick the sandbox policy without having to reach for the generic -c/--config option:
# Run Codex with the default, read-only sandbox
codex --sandbox read-only
# Allow the agent to write within the current workspace while still blocking network access
codex --sandbox workspace-write
# Danger! Disable sandboxing entirely (only do this if you are already running in a container or other isolated env)
codex --sandbox danger-full-access
The same setting can be persisted in ~/.codex/config.toml via the top-level sandbox_mode = "MODE" key, e.g. sandbox_mode = "workspace-write".
In workspace-write, Codex also includes ~/.codex/memories in its writable roots so memory maintenance does not require an extra approval.
Code Organization
This folder is the root of a Cargo workspace. It contains quite a bit of experimental code, but here are the key crates:
core/contains the business logic for Codex. Ultimately, we hope this becomes a library crate that is generally useful for building other Rust/native applications that use Codex.exec/"headless" CLI for use in automation.tui/CLI that launches a fullscreen TUI built with Ratatui.cli/CLI multitool that provides the aforementioned CLIs via subcommands.
If you want to contribute or inspect behavior in detail, start by reading the module-level README.md files under each crate and run the project workspace from the top-level codex-rs directory so shared config, features, and build scripts stay aligned.