83 Commits

  • core: expose permission profile to shell tools (#29941)
    ## tl;dr
    
    Inject a `CODEX_PERMISSION_PROFILE` environment variable with the name
    of the current permission profile when invoking a shell tool.
    
    ## Why
    
    Shell tool owners may need to launch nested commands under the same
    named permission profile, including through `codex sandbox -P PROFILE
    --include-managed-config`. Until now, child processes could observe
    sandbox and network metadata but could not identify the active named
    permission profile.
    
    The `--include-managed-config` flag is essential when a helper
    reconstructs the sandbox from a profile name: it ensures the nested
    sandbox also loads managed enterprise requirements. Without it, using
    the inherited profile could unintentionally create a sandbox that does
    not enforce the organization's managed restrictions.
    
    The new environment value is intentionally informational and **must not
    be treated as trusted input**. Any process in the ancestry can overwrite
    an environment variable, so a consumer that passes this value to `codex
    sandbox -P` must first validate it against the profiles that helper is
    authorized to use.
    
    ## Example Use Case
    
    Suppose an organization provides a trusted `remote-bash` wrapper that
    lets Codex run a command on an approved build host. The local shell
    command uses the named `:workspace` permission profile:
    
    ```toml
    default_permissions = ":workspace"
    ```
    
    The command exposed to the model is a small zsh wrapper. It deliberately
    delegates with `exec`, preserving the original arguments and process
    environment:
    
    ```zsh
    #!/usr/bin/env zsh
    exec /opt/codex-tools/remote_bash.py "$@"
    ```
    
    The model invokes the public wrapper, not its Python implementation:
    
    ```sh
    /opt/codex-tools/remote-bash \
      --host builder.example.com \
      -- printf '%s' 'hello world'
    ```
    
    Only the inner implementation is authorized to escape the local sandbox:
    
    ```starlark
    prefix_rule(
        pattern=["/opt/codex-tools/remote_bash.py"],
        decision="allow",
    )
    ```
    
    With zsh-fork, execution begins with `remote-bash` inside the
    `:workspace` sandbox. When the wrapper calls `exec`, the exact prefix
    rule matches `remote_bash.py`, so that inner script is restarted
    unsandboxed. The escalated process inherits:
    
    ```text
    CODEX_PERMISSION_PROFILE=:workspace
    ```
    
    Inheritance does not make the value trustworthy. `remote_bash.py`
    independently allowlists both the remote host and the permission profile
    before using either value. In particular, a forged value such as
    `:danger-full-access` is rejected before it can reach `codex sandbox
    -P`:
    
    ```python
    import argparse
    import os
    import shlex
    import sys
    
    ALLOWED_HOSTS = {"builder.example.com"}
    ALLOWED_PROFILES = {":workspace"}
    
    parser = argparse.ArgumentParser()
    parser.add_argument("--host", required=True)
    separator = sys.argv.index("--")
    args = parser.parse_args(sys.argv[1:separator])
    command = sys.argv[separator + 1:]
    
    if args.host not in ALLOWED_HOSTS:
        parser.error("host is not allowlisted")
    if not command:
        parser.error("the remote command must not be empty")
    
    profile = os.environ.get("CODEX_PERMISSION_PROFILE")
    if not profile:
        raise SystemExit("CODEX_PERMISSION_PROFILE must not be empty")
    if profile not in ALLOWED_PROFILES:
        raise SystemExit("CODEX_PERMISSION_PROFILE is not allowlisted")
    
    remote_command = shlex.join(command)
    sandbox_command = shlex.join([
        "codex", "sandbox", "-P", profile,
        "--include-managed-config", "--",
        "bash", "-lc", remote_command,
    ])
    print(shlex.join(["ssh", args.host, sandbox_command]))
    ```
    
    This builds each command layer as an argument vector and uses
    `shlex.join()` at the boundary, rather than interpolating untrusted
    shell text. After validation and parsing, the nested command has this
    structure:
    
    ```text
    ssh argv:
      ["ssh", "builder.example.com", SANDBOX_COMMAND]
    
    SANDBOX_COMMAND argv:
      ["codex", "sandbox", "-P", ":workspace",
       "--include-managed-config", "--",
       "bash", "-lc", "printf %s 'hello world'"]
    
    bash -lc payload argv:
      ["printf", "%s", "hello world"]
    ```
    
    A production implementation could execute that SSH command. The
    integration fixture prints it and parses the result back into arguments,
    verifying the complete flow:
    
    ```text
    model invokes outer wrapper
      -> zsh-fork starts wrapper under :workspace
      -> wrapper execs allowlisted Python script
      -> prefix rule restarts Python script unsandboxed
      -> Python script inherits CODEX_PERMISSION_PROFILE=:workspace
      -> Python script verifies :workspace is allowlisted
      -> remote command runs codex sandbox -P :workspace
         with --include-managed-config
      -> nested sandbox honors managed enterprise requirements
    ```
    
    This gives the trusted helper access to resources outside the local
    sandbox—such as SSH credentials—while ensuring that it can select only
    an explicitly authorized profile and that work on the remote host
    remains subject to the organization's managed requirements.
    
    ## What changed
    
    - Inject `CODEX_PERMISSION_PROFILE` after shell environment policy
    evaluation so the active profile wins over inherited or configured stale
    values.
    - Apply the variable to both `shell_command` and unified `exec_command`,
    including local, zsh-fork, and remote exec-server paths.
    - Remove stale values when the session has no active named profile.
    - Preserve the current profile value when loading a shell snapshot so a
    parent snapshot cannot restore an older profile.
    
    ## Testing
    
    - Added classic-shell integration coverage proving an exact prefix rule
    can run a `require_escalated` script outside the `:workspace` sandbox
    while preserving `CODEX_PERMISSION_PROFILE=:workspace`.
    - Added zsh-fork integration coverage in which the model invokes an
    outer zsh wrapper, an inner allowlisted `remote_bash.py` runs
    unsandboxed, and its printed SSH command reconstructs the inherited
    `:workspace` sandbox with `--include-managed-config` while preserving
    every argument after `--`.
    - The example helper treats `CODEX_PERMISSION_PROFILE` as untrusted and
    validates it against `ALLOWED_PROFILES` before constructing the nested
    command.
    - Assert that the reconstructed sandbox command includes
    `--include-managed-config` so nested use of the inherited profile cannot
    bypass managed enterprise requirements.
    - Added coverage for overriding and removing stale profile values.
    - Verified `shell_command` receives the selected active profile.
    - Added shell snapshot coverage using `printenv
    CODEX_PERMISSION_PROFILE`.
  • chore(core) rm AskForApproval::OnFailure (#28418)
    ## Summary
    Deletes the OnFailure variant of the `AskForApproval` enum. This option
    has been deprecated since #11631.
    
    ## Testing
    - [x] Tests pass
  • Avoid sandbox helper in apply_patch approval tests (#28915)
    ## Summary
    This keeps the apply_patch approval tests focused on approval behavior
    instead of macOS sandboxed filesystem helper startup.
    
    The changed cases still force patch approval with `UnlessTrusted`, but
    use `DangerFullAccess` after approval so the patch write is direct and
    cheap. Workspace-write and sandbox-helper behavior remain covered by the
    filesystem and apply_patch sandbox tests.
  • [codex] Use expect in integration tests (#28441)
    The workspace denies `clippy::expect_used` in production. Although
    `clippy.toml` allows `expect` in tests, Bazel Clippy compiles
    integration-test helper code in a way that does not receive that
    exemption, which encouraged verbose `unwrap_or_else(... panic!(...))`
    and equivalent `match`/`let else` forms.
    
    This allows `clippy::expect_used` once at each integration-test crate
    root (including aggregated suites and test-support libraries), then
    replaces manual panic-based Result and Option unwraps with
    `expect`/`expect_err`. Standalone `tests/*.rs` files remain their own
    crate roots. Intentional assertion and unexpected-variant panics remain
    unchanged, and the production `expect_used = "deny"` lint remains in
    place.
    
    The cleanup is mechanical and net-negative in line count.
  • Pair thread environment settings (#26687)
    ## Why
    
    Thread cwd and environment selections are a single logical setting in
    core: updating one without the other can silently desynchronize the
    next-turn execution context. This change makes that relationship
    explicit in the internal thread settings flow while preserving the
    existing app-server public API shape.
    
    ## What changed
    
    - Moved the cwd/environment pair through internal
    `ThreadSettingsOverrides.environment_settings` instead of a top-level
    internal `cwd` field.
    - Kept `thread/settings/update` public params unchanged, with app-server
    translating top-level `cwd` into the paired internal settings shape.
    - Moved `Op::UserInput` environment overrides into thread settings so
    user turns and settings updates use the same core path.
    - Updated core, app-server, MCP, memories, sample, and test callsites to
    construct the paired settings shape.
    
    ## Verification
    
    - `git diff --check`
    - Local test run starting after PR creation.
  • Require absolute cwd in thread settings (#26532)
    ## Why
    
    Thread settings cwd overrides are expected to be resolved before they
    enter core. Keeping this boundary as a plain `PathBuf` made it easy for
    core/session code to keep fallback normalization and relative-path
    resolution logic in places that should only receive an already-resolved
    cwd.
    
    This is intentionally the absolute-cwd-only slice: it does not change
    environment selection stickiness or cwd-to-default-environment fallback
    behavior.
    
    ## What changed
    
    - Changes `ThreadSettingsOverrides.cwd`,
    `CodexThreadSettingsOverrides.cwd`, and `SessionSettingsUpdate.cwd` to
    use `AbsolutePathBuf`.
    - Removes core-side cwd normalization/resolution from session settings
    updates.
    - Updates affected core/app-server test helpers and callsites to pass
    existing absolute cwd values or use `abs()` helpers.
    
    ## Validation
    
    Opening as draft so CI can start while local validation continues.
  • Switch runtime to cloud config bundle (#24622)
    ## Summary
    
    - Adapts the moved `codex-cloud-config` crate from the legacy cloud
    requirements endpoint to the new config bundle endpoint.
    - Switches runtime consumers from `CloudRequirementsLoader` to
    `CloudConfigBundleLoader` so one shared bundle supplies cloud-delivered
    config and requirements.
    - Removes the legacy cloud requirements domain loader path.
    
    ## Details
    
    This intentionally keeps `codex-cloud-config` monolithic for review
    lineage: the previous PR establishes the crate move, and this PR shows
    the behavior change against that moved implementation. A follow-up PR
    splits the module back into focused files.
    
    The new bundle path preserves the important cloud requirements loader
    semantics where intended: account-scoped signed cache, 30 minute TTL, 5
    minute refresh cadence, retry/backoff, auth recovery, and fail-closed
    startup loading. The cached payload changes from a single requirements
    TOML string to the backend-delivered bundle, and validation rejects
    malformed config or requirements fragments before cache write/use.
  • fix: preserve deny-read sandboxing for safe commands (#23943)
    ## Why
    
    Permission profiles can mark filesystem entries as unreadable with
    `deny` rules, including glob patterns. Several shell execution paths
    treated known-safe commands or execpolicy `allow` rules as sufficient to
    run outside the filesystem sandbox. That is not valid for read-capable
    commands: for example, `cat` or `ls` may be reasonable to allow
    generally, but dropping the sandbox would also drop deny-read
    constraints such as `**/*.env`.
    
    ## What changed
    
    - Added a shared check that treats active deny-read restrictions as
    incompatible with unsandboxed execution.
    - Kept first-attempt execution sandboxed for explicit escalation and
    execpolicy allow bypasses when deny-read entries are present.
    - Prevented no-sandbox retry after a sandbox denial when the active
    filesystem policy contains deny-read entries.
    - Updated the zsh-fork execve path so prefix-rule `allow` decisions
    continue inside the current sandbox when deny-read restrictions are
    active.
    
    ## Verification
    
    - `cargo test -p codex-core tools::sandboxing::tests`
    - `cargo test -p codex-core
    tools::runtimes::shell::unix_escalation::tests`
    - `cargo test -p codex-core
    shell_command_enforces_glob_deny_read_policy`
  • runtime: prepend zsh fork bin dir to PATH (#23768)
    ## Why
    
    #23756 makes packaged Codex builds include and default to the bundled
    zsh fork. The important reason to put that fork's directory at the front
    of `PATH` is to keep executable-level escalation working after a command
    leaves the original shell and later re-enters zsh through `env`.
    
    The expected chain is:
    
    1. The zsh fork runs the top-level shell command.
    2. That command launches another program, such as `python3`, while
    inheriting the `EXEC_WRAPPER` environment and the escalation socket fd.
    3. That program spawns a shell script whose shebang is `#!/usr/bin/env
    zsh` rather than `#!/bin/zsh`, and it does not close the escalation fd.
    4. `/usr/bin/env` resolves `zsh` through `PATH`, so it must find the
    packaged zsh fork before the system zsh.
    5. Commands inside that nested script are intercepted by the zsh fork
    and can still request escalation from Codex.
    
    If `PATH` resolves `zsh` to the system shell instead, the nested script
    loses zsh-fork exec interception. Commands that should request
    escalation can then run only in the original sandbox, or fail there,
    without Codex ever receiving the approval request.
    
    Shell snapshots make this slightly more subtle: a snapshot can restore
    an older `PATH` after the child shell starts. This PR treats the zsh
    fork `PATH` prepend as an explicit environment override so snapshot
    wrapping preserves it.
    
    ## What Changed
    
    - Added shared zsh-fork runtime helpers that prepend the configured zsh
    executable parent directory to `PATH` without duplicate entries.
    - Applied the zsh fork `PATH` prepend to both zsh-fork `shell_command`
    launches and unified-exec zsh-fork launches before sandbox command
    construction.
    - Kept the shell-command zsh-fork backend API narrow: it derives the
    configured zsh path from session services and rebuilds its sandbox
    environment from `req.env`, rather than accepting a second, competing
    environment map or a separately threaded bin dir.
    - Kept Unix-only zsh-fork `PATH` mutation out of Windows clippy-visible
    mutability.
    - Added coverage for duplicate `PATH` entries, for preserving the zsh
    fork prepend through shell snapshot wrapping, and for the nested
    `python3` -> `#!/usr/bin/env zsh` escalation flow.
    
    ## Testing
    
    - `just fmt`
    - `just fix -p codex-core`
    
    I left final test validation to CI after the latest review-comment
    cleanup. Before that cleanup, `just test -p codex-core zsh_fork` passed
    locally for the zsh-fork-focused tests.
  • Add experimental turn additional context (#24154)
    ## Summary
    
    Adds experimental `additionalContext` support to `turn/start` and
    `turn/steer` so clients can provide ephemeral external context, such as
    browser or automation state, without turning that plumbing into a
    visible user prompt or triggering user-prompt lifecycle behavior.
    
    ## API Shape
    
    The parameter shape is:
    
    ```ts
    additionalContext?: Record<string, {
      value: string
      kind: "untrusted" | "application"
    }> | null
    ```
    
    Example:
    
    ```json
    {
      "additionalContext": {
        "browser_info": {
          "value": "Active tab is CI failures.",
          "kind": "untrusted"
        },
        "automation_info": {
          "value": "CI rerun is in progress.",
          "kind": "application"
        }
      }
    }
    ```
    
    The keys are opaque and caller-defined.
    
    ## Context Injection
    
    When provided, accepted entries are inserted into model context as
    hidden contextual message items, not as visible thread user-message
    items.
    
    `kind: "untrusted"` entries are inserted with role `user`:
    
    ```text
    <external_${key}>${value}</external_${key}>
    ```
    
    `kind: "application"` entries are inserted with role `developer`:
    
    ```text
    <${key}>${value}</${key}>
    ```
    
    Values are not escaped. Each value is truncated to 1k approximate tokens
    before wrapping.
    
    For `turn/start`, accepted additional context is inserted before normal
    user input. For `turn/steer`, additional context is merged only when the
    steer includes non-empty user input; context-only steers still reject as
    empty input.
    
    ## Dedupe Strategy
    
    `AdditionalContextStore` lives on session state and stores the latest
    complete additional-context map.
    
    Each `turn/start` or non-empty `turn/steer` treats its
    `additionalContext` as the current complete set of values. Entries are
    injected only when the key is new or the exact entry for that key
    changed, including `value` or `kind`. After merging, the store is
    replaced with the provided map, so omitted keys are removed from the
    retained set and can be injected again later if reintroduced.
    
    Omitting `additionalContext`, passing `null`, or passing an empty object
    resets the store to empty and injects nothing.
    
    ## What Changed
    
    - Threads experimental v2 `additionalContext` through app-server into
    core turn start and steer handling.
    - Adds separate contextual fragment types for untrusted user-role
    context and application developer-role context.
    - Uses pending response input items so additional context can be
    combined with normal user input without treating it as prompt text.
    - Adds integration coverage for start/steer flow, role routing,
    dedupe/reset behavior, deletion/re-add behavior, hook-blocked input
    behavior, empty context-only steer rejection, external-fragment marker
    matching, and truncation.
  • test: clean up apply_patch allow-session artifact (#24611)
    ## Why
    
    The
    `approving_apply_patch_for_session_skips_future_prompts_for_same_file`
    integration test writes `apply_patch_allow_session.txt` under the
    process cwd while exercising outside-workspace patch approval behavior.
    With `just test` now being the normal validation path, that file can be
    left behind in the checkout when the test runs or fails, creating
    confusing untracked state.
    
    ## What changed
    
    - Registers the resolved `apply_patch_allow_session.txt` path with
    `tempfile::TempPath` before the test removes and recreates it through
    `apply_patch`.
    - Preserves the existing outside-workspace path shape so the approval
    behavior under test does not change.
    - Lets `TempPath` remove the generated file when the test exits,
    including panic paths.
    
    ## Verification
    
    - `just test -p codex-core --test all
    approving_apply_patch_for_session_skips_future_prompts_for_same_file`
  • chore: namespace v1 sub-agent tools (#23475)
    ## Why
    
    The v1 sub-agent tools are a single tool family, but they were exposed
    as separate flat function tools. This makes the model-visible surface
    less clearly grouped and leaves the legacy names in the same flat
    namespace as newer agent tooling.
    
    ## What
    
    - Wraps the v1 `spawn_agent`, `send_input`, `resume_agent`,
    `wait_agent`, and `close_agent` specs in the `multi_agent_v1` namespace.
    - Registers the corresponding handlers with namespaced runtime tool
    names.
    - Updates tool-planning, deferred tool search, and sub-agent
    notification tests to assert the namespace shape and child `spawn_agent`
    lookup.
    
    ## Verification
    
    - Updated `codex-core` coverage for the v1 multi-agent tool plan,
    deferred tool search output, and sub-agent tool descriptions.
  • [3 of 7] Remove UserTurn (#23075)
    **Stack position:** [3 of 7]
    
    ## Summary
    
    This PR finishes the input-op consolidation by moving the remaining
    `Op::UserTurn` callers onto `Op::UserInput` and deleting `Op::UserTurn`.
    This touches a lot of files, but it is a low-risk mechanical migration.
    
    ## Stack
    
    1. [1 of 7] [Add thread settings to
    UserInput](https://github.com/openai/codex/pull/23080)
    2. [2 of 7] [Remove
    UserInputWithTurnContext](https://github.com/openai/codex/pull/23081)
    3. [3 of 7] [Remove
    UserTurn](https://github.com/openai/codex/pull/23075) (this PR)
    4. [4 of 7] [Placeholder for OverrideTurnContext
    cleanup](https://github.com/openai/codex/pull/23087)
    5. [5 of 7] [Replace OverrideTurnContext with
    ThreadSettings](https://github.com/openai/codex/pull/22508)
    6. [6 of 7] [Add app-server thread settings
    API](https://github.com/openai/codex/pull/22509)
    7. [7 of 7] [Sync TUI thread
    settings](https://github.com/openai/codex/pull/22510)
  • chore(features) rm Feature::ApplyPatchFreeform (#22711)
    ## Summary
    Removes the feature since this is effectively on by default in all cases
    where we should use it, or can be configured via models.json.
    
    ## Testing
    - [x] unit tests pass
  • tests: avoid ambient temp sandbox roots (#22576)
    ## Why
    Some sandboxed integration tests enabled both ambient temp roots
    (`TMPDIR` and literal `/tmp`) even though they were not testing
    temp-root behavior. On Linux bwrap, making `/tmp` writable causes
    protected metadata mount targets such as `/tmp/.git`, `/tmp/.agents`,
    and `/tmp/.codex` to be synthesized. If a run is interrupted, those
    top-level markers can be left behind and contaminate later tests.
    
    ## What changed
    For the incidental integration tests that do not need ambient temp-root
    access, set `exclude_tmpdir_env_var` and `exclude_slash_tmp` to `true`.
    Dedicated protected-metadata coverage remains in the lower-level sandbox
    tests that use isolated temp roots.
    
    ## Verification
    Focused remote devbox repros passed with a watcher polling `/tmp/.git`,
    `/tmp/.agents`, and `/tmp/.codex`; no leaked markers were observed.
  • fix(exec-policy) use is_known_safe_command less (#20305)
    ## Summary
    Restricts behavior of `is_known_safe_command` only to modes where it is
    explicitly part of the documented behavior:
    - when `environment_lacks_sandbox_protections`
    - in `AskForApproval::UnlessTrusted`
    
    Notably, as a result of this, escalations for commands that pass
    `is_known_safe_commands` are no longer auto-approved in
    AskForApproval::OnRequest or AskForApproval::Granular.
    
    ## Testing
    - [x] Updated unit tests
    - [x] Updated approvals scenario tests.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • [codex] Delete function-style apply_patch (#21651)
    ## Why
    
    `apply_patch` is now a freeform/custom tool. Keeping the old
    JSON/function-style registration and parsing path left another way for
    models and tests to invoke `apply_patch`, which made the tool surface
    harder to reason about.
    
    ## What changed
    
    - Removed the `ApplyPatchToolType::Function` variant, JSON `apply_patch`
    spec, and handler support for function payloads.
    - Kept `apply_patch_tool_type = freeform` as the supported model
    metadata path, including Bedrock catalog metadata.
    - Migrated `apply_patch` tests and SSE fixtures to custom/freeform tool
    calls.
    
    ## Verification
    
    - `cargo test -p codex-tools -p codex-protocol -p codex-model-provider`
    - `cargo test -p codex-core tools::handlers::apply_patch --lib`
    - `cargo test -p codex-core --test all
    apply_patch_tool_executes_and_emits_patch_events`
    - `cargo test -p codex-core --test all
    apply_patch_reports_parse_diagnostics`
    - `cargo test -p codex-exec test_apply_patch_tool`
    - `just fix -p codex-core`
    - `just fix -p codex-tools -p codex-protocol -p codex-model-provider -p
    codex-exec`
  • feat: add session_id (#20437)
    ## Summary
    
    Related to
    https://openai.slack.com/archives/C095U48JNL9/p1777537279707449
    TLDR:
    We update the meaning of session ids and thread ids:
    * thread_id stays as now
    * session_id become a shared id between every thread under a /root
    thread (i.e. every sub-agent share the same session id)
    
    This PR introduces an explicit `SessionId` and threads it through the
    protocol/client boundary so `session_id` and `thread_id` can diverge
    when they need to, while preserving compatibility for older serialized
    `session_configured` events.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • fix(exec_policy) heredoc parsing file_redirect (#20113)
    ## Summary
    Fixes a regression introduced in #10941 so that heredocs do not permit
    file redirects to be approved by rules, and adds scenario tests to cover
    this behavior.
    
    
    Previously, heredoc command parsing would allow redirects and
    environment variables:
    ```bash
    # commands_for_exec_policy() would parse this via parse_shell_lc_single_command_prefix
    PATH=/tmp/bad:$PATH cat <<'EOF' > /tmp/bad/hello.txt
    hello
    EOF
    ```
    This conflicts with the Codex Rules documentation; heredoc parsing logic
    should abide by the same strictness of parsing.
    
    
    ## Tests
    - [x] Updated unit tests accordingly
    - [x] Added scenario tests for these cases
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • core tests: migrate zsh-fork permissions to profiles (#20034)
    ## Summary
    - Updates the zsh-fork test helper to configure `PermissionProfile`
    directly instead of constructing a legacy `SandboxPolicy`.
    - Sends permission-profile-backed turns from the skill approval zsh-fork
    tests so the runtime and request path exercise the canonical permissions
    model.
    - Leaves the broader approvals suite on legacy policies for now, except
    for the zsh-fork test that shares this helper.
    
    ## Verification
    - `cargo check -p codex-core --tests`
    - `just fmt`
  • permissions: add built-in default profiles (#19900)
    ## Why
    
    The migration away from `SandboxPolicy` needs new configs to start from
    permissions profiles instead of deriving profiles from legacy sandbox
    modes. Existing users can have empty `config.toml` files, and we should
    not rewrite user-owned config files that may live in shared
    repositories.
    
    This PR introduces built-in profile names so an empty config can resolve
    to a canonical `PermissionProfile`, while explicit named `[permissions]`
    profiles still behave predictably.
    
    ## What changed
    
    - Adds built-in `default_permissions` profile names:
      - `:read-only` maps to `PermissionProfile::read_only()`.
    - `:workspace` maps to the workspace-write profile, including
    project-root metadata carveouts.
    - `:danger-no-sandbox` maps to `PermissionProfile::Disabled`, preserving
    the distinction between no sandbox and a broad managed sandbox.
    - Reserves the `:` prefix for built-in profiles so user-defined
    `[permissions]` profiles cannot collide with future built-ins.
    - Allows `default_permissions` to reference a built-in profile without
    requiring a `[permissions]` table.
    - Makes an otherwise empty config choose a built-in profile by
    trust/platform context: trusted or untrusted project roots use
    `:workspace` when the platform supports that sandbox, while roots
    without a trust decision use `:read-only`.
    - Keeps legacy `sandbox_mode` configs on the legacy path, and still
    rejects user-defined `[permissions]` profiles that omit
    `default_permissions` so we do not silently guess among custom profiles.
    - Preserves compatibility behavior for implicit defaults: bare
    `network.enabled = true` allows runtime network without starting the
    managed proxy, explicit profile proxy policy still starts the proxy, and
    implicit workspace/add-dir roots keep legacy metadata carveouts.
    
    ## Verification
    
    - `cargo test -p codex-core builtin --lib`
    - `cargo test -p codex-core profile_network_proxy_config`
    - `cargo test -p codex-core
    implicit_builtin_workspace_profile_preserves_add_dir_metadata_carveouts`
    - `cargo test -p codex-core
    permissions_profiles_network_enabled_allows_runtime_network_without_proxy`
    - `cargo test -p codex-core
    permissions_profiles_proxy_policy_starts_managed_network_proxy`
    
    ## Documentation
    
    Public Codex config docs should mention these built-in names when the
    `[permissions]` config format is ready to document as stable.
    
    
    
    
    
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/19900).
    * #20041
    * #20040
    * #20037
    * #20035
    * #20034
    * #20033
    * #20032
    * #20030
    * #20028
    * #20027
    * #20026
    * #20024
    * #20021
    * #20018
    * #20016
    * #20015
    * #20013
    * #20011
    * #20010
    * #20008
    * __->__ #19900
  • [codex] Move config loading into codex-config (#19487)
    ## Why
    
    Config loading had become split across crates: `codex-config` owned the
    config types and merge logic, while `codex-core` still owned the loader
    that assembled the layer stack. This change consolidates that
    responsibility in `codex-config`, so the crate that defines config
    behavior also owns how configs are discovered and loaded.
    
    To make that move possible without reintroducing the old dependency
    cycle, the shell-environment policy types and helpers that
    `codex-exec-server` needs now live in `codex-protocol` instead of
    flowing through `codex-config`.
    
    This also makes the migrated loader tests more deterministic on machines
    that already have managed or system Codex config installed by letting
    tests override the system config and requirements paths instead of
    reading the host's `/etc/codex`.
    
    ## What Changed
    
    - moved the config loader implementation from `codex-core` into
    `codex-config::loader` and deleted the old `core::config_loader` module
    instead of leaving a compatibility shim
    - moved shell-environment policy types and helpers into
    `codex-protocol`, then updated `codex-exec-server` and other downstream
    crates to import them from their new home
    - updated downstream callers to use loader/config APIs from
    `codex-config`
    - added test-only loader overrides for system config and requirements
    paths so loader-focused tests do not depend on host-managed config state
    - cleaned up now-unused dependency entries and platform-specific cfgs
    that were surfaced by post-push CI
    
    ## Testing
    
    - `cargo test -p codex-config`
    - `cargo test -p codex-core config_loader_tests::`
    - `cargo test -p codex-protocol -p codex-exec-server -p
    codex-cloud-requirements -p codex-rmcp-client --lib`
    - `cargo test --lib -p codex-app-server-client -p codex-exec`
    - `cargo test --no-run --lib -p codex-app-server`
    - `cargo test -p codex-linux-sandbox --lib`
    - `cargo shear`
    - `just bazel-lock-check`
    
    ## Notes
    
    - I did not chase unrelated full-suite failures outside the migrated
    loader surface.
    - `cargo test -p codex-core --lib` still hits unrelated proxy-sensitive
    failures on this machine, and Windows CI still shows unrelated
    long-running/timeouting test noise outside the loader migration itself.
  • permissions: make runtime config profile-backed (#19606)
    ## Why
    
    This supersedes #19391. During stack repair, GitHub marked #19391 as
    merged into a temporary stack branch rather than into `main`, so the
    runtime-config change needed a fresh PR.
    
    `PermissionProfile` is now the canonical permissions shape after #19231
    because it can distinguish `Managed`, `Disabled`, and `External`
    enforcement while also carrying filesystem rules that legacy
    `SandboxPolicy` cannot represent cleanly. Core config and session state
    still needed to accept profile-backed permissions without forcing every
    profile through the strict legacy bridge, which rejected valid runtime
    profiles such as direct write roots.
    
    The unrelated CI/test hardening that previously rode along with this PR
    has been split into #19683 so this PR stays focused on the permissions
    model migration.
    
    ## What Changed
    
    - Adds `Permissions.permission_profile` and
    `SessionConfiguration.permission_profile` as constrained runtime state,
    while keeping `sandbox_policy` as a legacy compatibility projection.
    - Introduces profile setters that keep `PermissionProfile`, split
    filesystem/network policies, and legacy `SandboxPolicy` projections
    synchronized.
    - Uses a compatibility projection for requirement checks and legacy
    consumers instead of rejecting profiles that cannot round-trip through
    `SandboxPolicy` exactly.
    - Updates config loading, config overrides, session updates, turn
    context plumbing, prompt permission text, sandbox tags, and exec request
    construction to carry profile-backed runtime permissions.
    - Preserves configured deny-read entries and `glob_scan_max_depth` when
    command/session profiles are narrowed.
    - Adds `PermissionProfile::read_only()` and
    `PermissionProfile::workspace_write()` presets that match legacy
    defaults.
    
    ## Verification
    
    - `cargo test -p codex-core direct_write_roots`
    - `cargo test -p codex-core runtime_roots_to_legacy_projection`
    - `cargo test -p codex-app-server
    requested_permissions_trust_project_uses_permission_profile_intent`
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/19606).
    * #19395
    * #19394
    * #19393
    * #19392
    * __->__ #19606
  • Split approval matrix test groups (#19454)
    ## Why
    
    Recent `main` CI repeatedly timed out in:
    
    - `codex-core::all suite::approvals::approval_matrix_covers_all_modes`
    
    It failed in runs
    [24909500958](https://github.com/openai/codex/actions/runs/24909500958),
    [24908076251](https://github.com/openai/codex/actions/runs/24908076251),
    [24906197645](https://github.com/openai/codex/actions/runs/24906197645),
    [24905823212](https://github.com/openai/codex/actions/runs/24905823212),
    [24903439629](https://github.com/openai/codex/actions/runs/24903439629),
    [24903336028](https://github.com/openai/codex/actions/runs/24903336028),
    and
    [24898949647](https://github.com/openai/codex/actions/runs/24898949647).
    
    The failure pattern was a 60s Linux remote timeout. Logs showed many
    approval scenarios completing before the single matrix test timed out.
    
    ## Root Cause
    
    `approval_matrix_covers_all_modes` packed every approval/sandbox/tool
    scenario into one test case. That made the test vulnerable to normal CI
    variance: one slow scenario or a slow process startup could push the
    whole monolithic case past the 60s per-test timeout. It also hid which
    part of the matrix was slow because the runner only reported the one
    large matrix test.
    
    ## What Changed
    
    - Keep the shared `scenarios()` table as the single source of approval
    matrix coverage.
    - Use one `#[test_case]` per `ScenarioGroup` to generate five async
    Tokio tests: danger/full-access, read-only, workspace-write,
    apply-patch, and unified-exec.
    - Keep the group runner small and add per-scenario error context so a
    failure still reports the specific scenario name.
    
    ## Why This Should Be Reliable
    
    Each scenario group now has its own test harness timeout instead of
    sharing one timeout window with the full matrix. That removes the long
    sequential loop from a single test while keeping the implementation
    compact and easy to scan.
    
    The tests still run through the same scenario definitions and runner, so
    this preserves coverage. `test-case` already composes with
    `#[tokio::test]` in this crate and is already available for test code.
    
    ## Verification
    
    - `cargo test -p codex-core --test all approval_matrix_ -- --list`
    - `cargo test -p codex-core --test all approval_matrix_`
  • permissions: remove legacy read-only access modes (#19449)
    ## Why
    
    `ReadOnlyAccess` was a transitional legacy shape on `SandboxPolicy`:
    `FullAccess` meant the historical read-only/workspace-write modes could
    read the full filesystem, while `Restricted` tried to carry partial
    readable roots. The partial-read model now belongs in
    `FileSystemSandboxPolicy` and `PermissionProfile`, so keeping it on
    `SandboxPolicy` makes every legacy projection reintroduce lossy
    read-root bookkeeping and creates unnecessary noise in the rest of the
    permissions migration.
    
    This PR makes the legacy policy model narrower and explicit:
    `SandboxPolicy::ReadOnly` and `SandboxPolicy::WorkspaceWrite` represent
    the old full-read sandbox modes only. Split readable roots, deny-read
    globs, and platform-default/minimal read behavior stay in the runtime
    permissions model.
    
    ## What changed
    
    - Removes `ReadOnlyAccess` from
    `codex_protocol::protocol::SandboxPolicy`, including the generated
    `access` and `readOnlyAccess` API fields.
    - Updates legacy policy/profile conversions so restricted filesystem
    reads are represented only by `FileSystemSandboxPolicy` /
    `PermissionProfile` entries.
    - Keeps app-server v2 compatible with legacy `fullAccess` read-access
    payloads by accepting and ignoring that no-op shape, while rejecting
    legacy `restricted` read-access payloads instead of silently widening
    them to full-read legacy policies.
    - Carries Windows sandbox platform-default read behavior with an
    explicit override flag instead of depending on
    `ReadOnlyAccess::Restricted`.
    - Refreshes generated app-server schema/types and updates tests/docs for
    the simplified legacy policy shape.
    
    ## Verification
    
    - `cargo check -p codex-app-server-protocol --tests`
    - `cargo check -p codex-windows-sandbox --tests`
    - `cargo test -p codex-app-server-protocol sandbox_policy_`
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/19449).
    * #19395
    * #19394
    * #19393
    * #19392
    * #19391
    * __->__ #19449
  • tests: isolate approval fixtures from host rules (#18288)
    ## Why
    
    Several approval-focused tests were unintentionally sensitive to
    host-level rule files. On machines with broader allowed command
    prefixes, commonly allowed commands such as `/bin/date` could bypass the
    approval path these tests were meant to exercise, making the fixtures
    depend on the developer or CI host configuration.
    
    ## What changed
    
    - Pins the approval matrix fixture to the explicit user reviewer so it
    does not inherit a host reviewer.
    - Changes OTel approval fixtures to request `/usr/bin/touch
    codex-otel-approval-test`, avoiding a command that may be pre-approved
    by local rules.
    - Clears the config layer stack for the permissions-message assertion
    that needs to compare only the permissions text under test.
    
    ## Verification
    
    - `env -u CODEX_SANDBOX_NETWORK_DISABLED cargo test -p codex-core --test
    all approval_matrix_covers_all_modes -- --nocapture`
    - `env -u CODEX_SANDBOX_NETWORK_DISABLED cargo test -p codex-core --test
    all permissions_messages -- --nocapture`
  • tui: carry permission profiles on user turns (#18285)
    ## Why
    
    Per-turn permission overrides should use the same canonical profile
    abstraction as session configuration. That lets TUI submissions preserve
    exact configured permissions without round-tripping through legacy
    sandbox fields.
    
    ## What changed
    
    This adds `permission_profile` to user-turn operations, threads it
    through TUI/app-server submission paths, fills the new field in existing
    test fixtures, and adds coverage that composer submission includes the
    configured profile.
    
    ## Verification
    
    - `cargo test -p codex-tui permissions -- --nocapture`
    - `cargo test -p codex-core --test all permissions_messages --
    --nocapture`
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/18285).
    * #18288
    * #18287
    * #18286
    * __->__ #18285
  • fix(core): emit hooks for apply_patch edits (#18391)
    Fixes https://github.com/openai/codex/issues/16732.
    
    ## Why
    
    `apply_patch` is Codex's primary file edit path, but it was not emitting
    `PreToolUse` or `PostToolUse` hook events. That meant hook-based policy,
    auditing, and write coordination could observe shell commands while
    missing the actual file mutation performed by `apply_patch`.
    
    The issue also exposed that the hook runtime serialized command hook
    payloads with `tool_name: "Bash"` unconditionally. Even if `apply_patch`
    supplied hook payloads, hooks would either fail to match it directly or
    receive misleading stdin that identified the edit as a Bash tool call.
    
    ## What Changed
    
    - Added `PreToolUse` and `PostToolUse` payload support to
    `ApplyPatchHandler`.
    - Exposed the raw patch body as `tool_input.command` for both
    JSON/function and freeform `apply_patch` calls.
    - Taught tool hook payloads to carry a handler-supplied hook-facing
    `tool_name`.
    - Preserved existing shell compatibility by continuing to emit `Bash`
    for shell-like tools.
    - Serialized the selected hook `tool_name` into hook stdin instead of
    hardcoding `Bash`.
    - Relaxed the generated hook command input schema so `tool_name` can
    represent tools other than `Bash`.
    
    ## Verification
    
    Added focused handler coverage for:
    
    - JSON/function `apply_patch` calls producing a `PreToolUse` payload.
    - Freeform `apply_patch` calls producing a `PreToolUse` payload.
    - Successful `apply_patch` output producing a `PostToolUse` payload.
    - Shell and `exec_command` handlers continuing to expose `Bash`.
    
    Added end-to-end hook coverage for:
    
    - A `PreToolUse` hook matching `^apply_patch$` blocking the patch before
    the target file is created.
    - A `PostToolUse` hook matching `^apply_patch$` receiving the patch
    input and tool response, then adding context to the follow-up model
    request.
    - Non-participating tools such as the plan tool continuing not to emit
    `PreToolUse`/`PostToolUse` hook events.
    
    Also validated manually with a live `codex exec` smoke test using an
    isolated temp workspace and temp `CODEX_HOME`. The smoke test confirmed
    that a real `apply_patch` edit emits `PreToolUse`/`PostToolUse` with
    `tool_name: "apply_patch"`, a shell command still emits `tool_name:
    "Bash"`, and a denying `PreToolUse` hook prevents the blocked patch file
    from being created.
  • Add turn-scoped environment selections (#18416)
    ## Summary
    - add experimental turn/start.environments params for per-turn
    environment id + cwd selections
    - pass selections through core protocol ops and resolve them with
    EnvironmentManager before TurnContext creation
    - treat omitted selections as default behavior, empty selections as no
    environment, and non-empty selections as first environment/cwd as the
    turn primary
    
    ## Testing
    - ran `just fmt`
    - ran `just write-app-server-schema`
    - not run: unit tests for this stacked PR
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Update models.json (#18586)
    - Replace the active models-manager catalog with the deleted core
    catalog contents.
    - Replace stale hardcoded test model slugs with current bundled model
    slugs.
    - Keep this as a stacked change on top of the cleanup PR.
  • protocol: canonicalize file system permissions (#18274)
    ## Why
    
    `PermissionProfile` needs stable, canonical file-system semantics before
    it can become the primary runtime permissions abstraction. Without a
    canonical form, callers have to keep re-deriving legacy sandbox maps and
    profile comparisons remain lossy or order-dependent.
    
    ## What changed
    
    This adds canonicalization helpers for `FileSystemPermissions` and
    `PermissionProfile`, expands special paths into explicit sandbox
    entries, and updates permission request/conversion paths to consume
    those canonical entries. It also tightens the legacy bridge so root-wide
    write profiles with narrower carveouts are not silently projected as
    full-disk legacy access.
    
    ## Verification
    
    - `cargo test -p codex-protocol
    root_write_with_read_only_child_is_not_full_disk_write -- --nocapture`
    - `cargo test -p codex-sandboxing permission -- --nocapture`
    - `cargo test -p codex-tui permissions -- --nocapture`
  • removing network proxy for yolo (#17742)
    **Summary**
    - prevent managed requirements.toml network settings from leaking into
    DangerFullAccess / yolo turns by gating managed proxy attachment on
    sandbox mode
    - keep guardian/sandboxed modes on the managed proxy path, while making
    true yolo bypass the proxy entirely, including /shell full-access
    commands
  • fix: Revert danger-full-access denylist-only mode (#17732)
    ## Summary
    
    - Reverts openai/codex#16946 and removes the danger-full-access
    denylist-only network mode.
    - Removes the corresponding config requirements, app-server
    protocol/schema, config API, TUI debug output, and network proxy
    behavior.
    - Drops stale tests that depended on the reverted mode while preserving
    newer managed allowlist-only coverage.
    
    ## Verification
    
    - `just write-app-server-schema`
    - `just fmt`
    - `cargo test -p codex-config network_requirements`
    - `cargo test -p codex-core network_proxy_spec`
    - `cargo test -p codex-core
    managed_network_proxy_decider_survives_full_access_start`
    - `cargo test -p codex-app-server map_requirements_toml_to_api`
    - `cargo test -p codex-tui debug_config_output`
    - `cargo test -p codex-app-server-protocol`
    - `just fix -p codex-config -p codex-core -p codex-app-server-protocol
    -p codex-app-server -p codex-tui`
    - `git diff --cached --check`
    
    Not run: full workspace `cargo test` (repo instructions ask for
    confirmation before that broader run).
  • chore: clean up argument-comment lint and roll out all-target CI on macOS (#16054)
    ## Why
    
    `argument-comment-lint` was green in CI even though the repo still had
    many uncommented literal arguments. The main gap was target coverage:
    the repo wrapper did not force Cargo to inspect test-only call sites, so
    examples like the `latest_session_lookup_params(true, ...)` tests in
    `codex-rs/tui_app_server/src/lib.rs` never entered the blocking CI path.
    
    This change cleans up the existing backlog, makes the default repo lint
    path cover all Cargo targets, and starts rolling that stricter CI
    enforcement out on the platform where it is currently validated.
    
    ## What changed
    
    - mechanically fixed existing `argument-comment-lint` violations across
    the `codex-rs` workspace, including tests, examples, and benches
    - updated `tools/argument-comment-lint/run-prebuilt-linter.sh` and
    `tools/argument-comment-lint/run.sh` so non-`--fix` runs default to
    `--all-targets` unless the caller explicitly narrows the target set
    - fixed both wrappers so forwarded cargo arguments after `--` are
    preserved with a single separator
    - documented the new default behavior in
    `tools/argument-comment-lint/README.md`
    - updated `rust-ci` so the macOS lint lane keeps the plain wrapper
    invocation and therefore enforces `--all-targets`, while Linux and
    Windows temporarily pass `-- --lib --bins`
    
    That temporary CI split keeps the stricter all-targets check where it is
    already cleaned up, while leaving room to finish the remaining Linux-
    and Windows-specific target-gated cleanup before enabling
    `--all-targets` on those runners. The Linux and Windows failures on the
    intermediate revision were caused by the wrapper forwarding bug, not by
    additional lint findings in those lanes.
    
    ## Validation
    
    - `bash -n tools/argument-comment-lint/run.sh`
    - `bash -n tools/argument-comment-lint/run-prebuilt-linter.sh`
    - shell-level wrapper forwarding check for `-- --lib --bins`
    - shell-level wrapper forwarding check for `-- --tests`
    - `just argument-comment-lint`
    - `cargo test` in `tools/argument-comment-lint`
    - `cargo test -p codex-terminal-detection`
    
    ## Follow-up
    
    - Clean up remaining Linux-only target-gated callsites, then switch the
    Linux lint lane back to the plain wrapper invocation.
    - Clean up remaining Windows-only target-gated callsites, then switch
    the Windows lint lane back to the plain wrapper invocation.
  • fix(sandbox): fix bwrap lookup for multi-entry PATH (#15973)
    ## Summary
    - split the joined `PATH` before running system `bwrap` lookup
    - keep the existing workspace-local `bwrap` skip behavior intact
    - add regression tests that exercise real multi-entry search paths
    
    ## Why
    The PATH-based lookup added in #15791 still wrapped the raw `PATH`
    environment value as a single `PathBuf` before passing it through
    `join_paths()`. On Unix, a normal multi-entry `PATH` contains `:`, so
    that wrapper path is invalid as one path element and the lookup returns
    `None`.
    
    That made Codex behave as if no system `bwrap` was installed even when
    `bwrap` was available on `PATH`, which is what users in #15340 were
    still hitting on `0.117.0-alpha.25`.
    
    ## Impact
    System `bwrap` discovery now works with normal multi-entry `PATH` values
    instead of silently falling back to the vendored binary.
    
    Fixes #15340.
    
    ## Validation
    - `just fmt`
    - `cargo test -p codex-sandboxing`
    - `cargo test -p codex-linux-sandbox`
    - `just fix -p codex-sandboxing`
    - `just argument-comment-lint`
  • chore(core) Add approvals reviewer to UserTurn (#15426)
    ## Summary
    Adds support for approvals_reviewer to `Op::UserTurn` so we can migrate
    `[CodexMessageProcessor::turn_start]` to use Op::UserTurn
    
    ## Testing
    - [x] Adds quick test for the new field
    
    Co-authored-by: Codex <noreply@openai.com>
  • Split features into codex-features crate (#15253)
    - Split the feature system into a new `codex-features` crate.
    - Cut `codex-core` and workspace consumers over to the new config and
    warning APIs.
    
    Co-authored-by: Ahmed Ibrahim <219906144+aibrahim-oai@users.noreply.github.com>
    Co-authored-by: Codex <noreply@openai.com>
  • fix(subagents) share execpolicy by default (#13702)
    ## Summary
    If a subagent requests approval, and the user persists that approval to
    the execpolicy, it should (by default) propagate. We'll need to rethink
    this a bit in light of coming Permissions changes, though I think this
    is closer to the end state that we'd want, which is that execpolicy
    changes to one permissions profile should be synced across threads.
    
    ## Testing
    - [x] Added integration test
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Stabilize approval matrix write-file command (#14968)
    ## What is flaky
    The approval-matrix `WriteFile` scenario is flaky. It sometimes fails in
    CI even though the approval logic is unchanged, because the test
    delegates the file write and readback to shell parsing instead of
    deterministic file I/O.
    
    ## Why it was flaky
    The test generated a command shaped like `printf ... > file && cat
    file`. That means the scenario depended on shell quoting, redirection,
    newline handling, and encoding behavior in addition to the approval
    system it was actually trying to validate. If the shell interpreted the
    payload differently, the test would report an approval failure even
    though the product logic was fine.
    
    That also made failures hard to diagnose, because the test did not log
    the exact generated command or the parsed result payload.
    
    ## How this PR fixes it
    This PR replaces the shell-redirection path with a deterministic
    `python3 -c` script that writes the file with `Path.write_text(...,
    encoding='utf-8')` and then reads it back with the same UTF-8 path. It
    also logs the generated command and the resulting exit code/stdout for
    the approval scenario so any future failure is directly attributable.
    
    ## Why this fix fixes the flakiness
    The scenario no longer depends on shell parsing and redirection
    semantics. The file contents are produced and read through explicit
    UTF-8 file I/O, so the approval test is measuring approval behavior
    instead of shell behavior. The added diagnostics mean a future failure
    will show the exact command/result pair instead of looking like a
    generic intermittent mismatch.
    
    Co-authored-by: Ahmed Ibrahim <219906144+aibrahim-oai@users.noreply.github.com>
    Co-authored-by: Codex <noreply@openai.com>
  • Add diagnostics for read_only_unless_trusted timeout flake (#14518)
    ## Summary
    - add targeted diagnostic logging for the
    read_only_unless_trusted_requires_approval scenarios in
    approval_matrix_covers_all_modes
    - add a scoped timeout buffer only for ro_unless_trusted write-file
    scenarios: 1000ms -> 2000ms
    - keep all other write-file scenarios at 1000ms
    
    ## Why
    The last two main failures were both in codex-core::all
    suite::approvals::approval_matrix_covers_all_modes with exit_code=124 in
    the same scenario. This points to execution-time jitter in CI rather
    than a semantic approval-policy mismatch.
    
    ## Notes
    - This does not introduce any >5s timeout and does not
    disable/quarantine tests.
    - The timeout increase is tightly scoped to the single flaky path and
    keeps the matrix deterministic under CI scheduling variance.
  • fix: follow up on linux sandbox review nits (#14440)
    ## Summary
    - address the follow-up review nits from #13996 in a separate PR
    - make the approvals test command a raw string and keep the
    managed-network path using env proxy routing
    - inline `--apply-seccomp-then-exec` in the Linux sandbox inner command
    builder
    - remove the bubblewrap-specific sandbox metric tag path and drop the
    `use_legacy_landlock` shim from `sandbox_tag`/`TurnMetadataState::new`
    - restore the `Feature` import that `origin/main` currently still needs
    in `connectors.rs`
    
    ## Testing
    - `cargo test -p codex-linux-sandbox`
    - focused `codex-core` tests were rerun/started, but the final
    verification pass was interrupted when I pushed at request
  • refactor: make bubblewrap the default Linux sandbox (#13996)
    ## Summary
    - make bubblewrap the default Linux sandbox and keep
    `use_legacy_landlock` as the only override
    - remove `use_linux_sandbox_bwrap` from feature, config, schema, and
    docs surfaces
    - update Linux sandbox selection, CLI/config plumbing, and related
    tests/docs to match the new default
    - fold in the follow-up CI fixes for request-permissions responses and
    Linux read-only sandbox error text
  • config: add initial support for the new permission profile config language in config.toml (#13434)
    ## Why
    
    `SandboxPolicy` currently mixes together three separate concerns:
    
    - parsing layered config from `config.toml`
    - representing filesystem sandbox state
    - carrying basic network policy alongside filesystem choices
    
    That makes the existing config awkward to extend and blocks the new TOML
    proposal where `[permissions]` becomes a table of named permission
    profiles selected by `default_permissions`. (The idea is that if
    `default_permissions` is not specified, we assume the user is opting
    into the "traditional" way to configure the sandbox.)
    
    This PR adds the config-side plumbing for those profiles while still
    projecting back to the legacy `SandboxPolicy` shape that the current
    macOS and Linux sandbox backends consume.
    
    It also tightens the filesystem profile model so scoped entries only
    exist for `:project_roots`, and so nested keys must stay within a
    project root instead of using `.` or `..` traversal.
    
    This drops support for the short-lived `[permissions.network]` in
    `config.toml` because now that would be interpreted as a profile named
    `network` within `[permissions]`.
    
    ## What Changed
    
    - added `PermissionsToml`, `PermissionProfileToml`,
    `FilesystemPermissionsToml`, and `FilesystemPermissionToml` so config
    can parse named profiles under `[permissions.<profile>.filesystem]`
    - added top-level `default_permissions` selection, validation for
    missing or unknown profiles, and compilation from a named profile into
    split `FileSystemSandboxPolicy` and `NetworkSandboxPolicy` values
    - taught config loading to choose between the legacy `sandbox_mode` path
    and the profile-based path without breaking legacy users
    - introduced `codex-protocol::permissions` for the split filesystem and
    network sandbox types, and stored those alongside the legacy projected
    `sandbox_policy` in runtime `Permissions`
    - modeled `FileSystemSpecialPath` so only `ProjectRoots` can carry a
    nested `subpath`, matching the intended config syntax instead of
    allowing invalid states for other special paths
    - restricted scoped filesystem maps to `:project_roots`, with validation
    that nested entries are non-empty descendant paths and cannot use `.` or
    `..` to escape the project root
    - kept existing runtime consumers working by projecting
    `FileSystemSandboxPolicy` back into `SandboxPolicy`, with an explicit
    error for profiles that request writes outside the workspace root
    - loaded proxy settings from top-level `[network]`
    - regenerated `core/config.schema.json`
    
    ## Verification
    
    - added config coverage for profile deserialization,
    `default_permissions` selection, top-level `[network]` loading, network
    enablement, rejection of writes outside the workspace root, rejection of
    nested entries for non-`:project_roots` special paths, and rejection of
    parent-directory traversal in `:project_roots` maps
    - added protocol coverage for the legacy bridge rejecting non-workspace
    writes
    
    ## Docs
    
    - update the Codex config docs on developers.openai.com/codex to
    document named `[permissions.<profile>]` entries, `default_permissions`,
    scoped `:project_roots` syntax, the descendant-path restriction for
    nested `:project_roots` entries, and top-level `[network]` proxy
    configuration
    
    
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/13434).
    * #13453
    * #13452
    * #13451
    * #13449
    * #13448
    * #13445
    * #13440
    * #13439
    * __->__ #13434
  • Clarify sandbox permission override helper semantics (#13703)
    ## Summary
    Today `SandboxPermissions::requires_additional_permissions()` does not
    actually mean "is `WithAdditionalPermissions`". It returns `true` for
    any non-default sandbox override, including `RequireEscalated`. That
    broad behavior is relied on in multiple `main` callsites.
    
    The naming is security-sensitive because `SandboxPermissions` is used on
    shell-like tool calls to tell the executor how a single command should
    relate to the turn sandbox:
    - `UseDefault`: run with the turn sandbox unchanged
    - `RequireEscalated`: request execution outside the sandbox
    - `WithAdditionalPermissions`: stay sandboxed but widen permissions for
    that command only
    
    ## Problem
    The old helper name reads as if it only applies to the
    `WithAdditionalPermissions` variant. In practice it means "this command
    requested any explicit sandbox override."
    
    That ambiguity made it easy to read production checks incorrectly and
    made the guardian change look like a standalone `main` fix when it is
    not.
    
    On `main` today:
    - `shell` and `unified_exec` intentionally reject any explicit
    `sandbox_permissions` request unless approval policy is `OnRequest`
    - `exec_policy` intentionally treats any explicit sandbox override as
    prompt-worthy in restricted sandboxes
    - tests intentionally serialize both `RequireEscalated` and
    `WithAdditionalPermissions` as explicit sandbox override requests
    
    So changing those callsites from the broad helper to a narrow
    `WithAdditionalPermissions` check would be a behavior change, not a pure
    cleanup.
    
    ## What This PR Does
    - documents `SandboxPermissions` as a per-command sandbox override, not
    a generic permissions bag
    - adds `requests_sandbox_override()` for the broad meaning: anything
    except `UseDefault`
    - adds `uses_additional_permissions()` for the narrow meaning: only
    `WithAdditionalPermissions`
    - keeps `requires_additional_permissions()` as a compatibility alias to
    the broad meaning for now
    - updates the current broad callsites to use the accurately named broad
    helper
    - adds unit coverage that locks in the semantics of all three helpers
    
    ## What This PR Does Not Do
    This PR does not change runtime behavior. That is intentional.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • config: enforce enterprise feature requirements (#13388)
    ## Why
    
    Enterprises can already constrain approvals, sandboxing, and web search
    through `requirements.toml` and MDM, but feature flags were still only
    configurable as managed defaults. That meant an enterprise could suggest
    feature values, but it could not actually pin them.
    
    This change closes that gap and makes enterprise feature requirements
    behave like the other constrained settings. The effective feature set
    now stays consistent with enterprise requirements during config load,
    when config writes are validated, and when runtime code mutates feature
    flags later in the session.
    
    It also tightens the runtime API for managed features. `ManagedFeatures`
    now follows the same constraint-oriented shape as `Constrained<T>`
    instead of exposing panic-prone mutation helpers, and production code
    can no longer construct it through an unconstrained `From<Features>`
    path.
    
    The PR also hardens the `compact_resume_fork` integration coverage on
    Windows. After the feature-management changes,
    `compact_resume_after_second_compaction_preserves_history` was
    overflowing the libtest/Tokio thread stacks on Windows, so the test now
    uses an explicit larger-stack harness as a pragmatic mitigation. That
    may not be the ideal root-cause fix, and it merits a parallel
    investigation into whether part of the async future chain should be
    boxed to reduce stack pressure instead.
    
    ## What Changed
    
    Enterprises can now pin feature values in `requirements.toml` with the
    requirements-side `features` table:
    
    ```toml
    [features]
    personality = true
    unified_exec = false
    ```
    
    Only canonical feature keys are allowed in the requirements `features`
    table; omitted keys remain unconstrained.
    
    - Added a requirements-side pinned feature map to
    `ConfigRequirementsToml`, threaded it through source-preserving
    requirements merge and normalization in `codex-config`, and made the
    TOML surface use `[features]` (while still accepting legacy
    `[feature_requirements]` for compatibility).
    - Exposed `featureRequirements` from `configRequirements/read`,
    regenerated the JSON/TypeScript schema artifacts, and updated the
    app-server README.
    - Wrapped the effective feature set in `ManagedFeatures`, backed by
    `ConstrainedWithSource<Features>`, and changed its API to mirror
    `Constrained<T>`: `can_set(...)`, `set(...) -> ConstraintResult<()>`,
    and result-returning `enable` / `disable` / `set_enabled` helpers.
    - Removed the legacy-usage and bulk-map passthroughs from
    `ManagedFeatures`; callers that need those behaviors now mutate a plain
    `Features` value and reapply it through `set(...)`, so the constrained
    wrapper remains the enforcement boundary.
    - Removed the production loophole for constructing unconstrained
    `ManagedFeatures`. Non-test code now creates it through the configured
    feature-loading path, and `impl From<Features> for ManagedFeatures` is
    restricted to `#[cfg(test)]`.
    - Rejected legacy feature aliases in enterprise feature requirements,
    and return a load error when a pinned combination cannot survive
    dependency normalization.
    - Validated config writes against enterprise feature requirements before
    persisting changes, including explicit conflicting writes and
    profile-specific feature states that normalize into invalid
    combinations.
    - Updated runtime and TUI feature-toggle paths to use the constrained
    setter API and to persist or apply the effective post-constraint value
    rather than the requested value.
    - Updated the `core_test_support` Bazel target to include the bundled
    core model-catalog fixtures in its runtime data, so helper code that
    resolves `core/models.json` through runfiles works in remote Bazel test
    environments.
    - Renamed the core config test coverage to emphasize that effective
    feature values are normalized at runtime, while conflicting persisted
    config writes are rejected.
    - Ran `compact_resume_after_second_compaction_preserves_history` inside
    an explicit 8 MiB test thread and Tokio runtime worker stack, following
    the existing larger-stack integration-test pattern, to keep the Windows
    `compact_resume_fork` test slice from aborting while a parallel
    investigation continues into whether some of the underlying async
    futures should be boxed.
    
    ## Verification
    
    - `cargo test -p codex-config`
    - `cargo test -p codex-core feature_requirements_ -- --nocapture`
    - `cargo test -p codex-core
    load_requirements_toml_produces_expected_constraints -- --nocapture`
    - `cargo test -p codex-core
    compact_resume_after_second_compaction_preserves_history -- --nocapture`
    - `cargo test -p codex-core compact_resume_fork -- --nocapture`
    - Re-ran the built `codex-core` `tests/all` binary with
    `RUST_MIN_STACK=262144` for
    `compact_resume_after_second_compaction_preserves_history` to confirm
    the explicit-stack harness fixes the deterministic low-stack repro.
    - `cargo test -p codex-core`
    - This still fails locally in unrelated integration areas that expect
    the `codex` / `test_stdio_server` binaries or hit existing `search_tool`
    wiremock mismatches.
    
    ## Docs
    
    `developers.openai.com/codex` should document the requirements-side
    `[features]` table for enterprise and MDM-managed configuration,
    including that it only accepts canonical feature keys and that
    conflicting config writes are rejected.
  • add fast mode toggle (#13212)
    - add a local Fast mode setting in codex-core (similar to how model id
    is currently stored on disk locally)
    - send `service_tier=priority` on requests when Fast is enabled
    - add `/fast` in the TUI and persist it locally
    - feature flag
  • core: adopt host_executable() rules in zsh-fork (#13046)
    ## Why
    
    [#12964](https://github.com/openai/codex/pull/12964) added
    `host_executable()` support to `codex-execpolicy`, but the zsh-fork
    interception path in `unix_escalation.rs` was still evaluating commands
    with the default exact-token matcher.
    
    That meant an intercepted absolute executable such as `/usr/bin/git
    status` could still miss basename rules like `prefix_rule(pattern =
    ["git", "status"])`, even when the policy also defined a matching
    `host_executable(name = "git", ...)` entry.
    
    This PR adopts the new matching behavior in the zsh-fork runtime only.
    That keeps the rollout intentionally narrow: zsh-fork already requires
    explicit user opt-in, so it is a safer first caller to exercise the new
    `host_executable()` scheme before expanding it to other execpolicy call
    sites.
    
    It also brings zsh-fork back in line with the current `prefix_rule()`
    execution model. Until prefix rules can carry their own permission
    profiles, a matched `prefix_rule()` is expected to rerun the intercepted
    command unsandboxed on `allow`, or after the user accepts `prompt`,
    instead of merely continuing inside the inherited shell sandbox.
    
    ## What Changed
    
    - added `evaluate_intercepted_exec_policy()` in
    `core/src/tools/runtimes/shell/unix_escalation.rs` to centralize
    execpolicy evaluation for intercepted commands
    - switched intercepted direct execs in the zsh-fork path to
    `check_multiple_with_options(...)` with `MatchOptions {
    resolve_host_executables: true }`
    - added `commands_for_intercepted_exec_policy()` so zsh-fork policy
    evaluation works from intercepted `(program, argv)` data instead of
    reconstructing a synthetic command before matching
    - left shell-wrapper parsing intentionally disabled by default behind
    `ENABLE_INTERCEPTED_EXEC_POLICY_SHELL_WRAPPER_PARSING`, so
    path-sensitive matching relies on later direct exec interception rather
    than shell-script parsing
    - made matched `prefix_rule()` decisions rerun intercepted commands with
    `EscalationExecution::Unsandboxed`, while unmatched-command fallback
    keeps the existing sandbox-preserving behavior
    - extracted the zsh-fork test harness into
    `core/tests/common/zsh_fork.rs` so both the skill-focused and
    approval-focused integration suites can exercise the same runtime setup
    - limited this change to the intercepted zsh-fork path rather than
    changing every execpolicy caller at once
    - added runtime coverage in
    `core/src/tools/runtimes/shell/unix_escalation_tests.rs` for allowed and
    disallowed `host_executable()` mappings and the wrapper-parsing modes
    - added integration coverage in `core/tests/suite/approvals.rs` to
    verify a saved `prefix_rule(pattern=["touch"], decision="allow")` reruns
    under zsh-fork outside a restrictive `WorkspaceWrite` sandbox
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/13046).
    * #13065
    * __->__ #13046
  • Allow clients not to send summary as an option (#12950)
    Summary is a required parameter on UserTurn. Ideally we'd like the core
    to decide the appropriate summary level.
    
    Make the summary optional and don't send it when not needed.