Files
codex/codex-rs/Cargo.toml
T
jif 89ac3ec27c Load selected executor skills through extensions (#27184)
## Why

CCA is moving toward a split runtime where the orchestrator may not have
a filesystem, while executors can expose preinstalled plugins and
skills. A thread therefore needs to select capabilities without asking
app-server or core to interpret executor-owned paths through the
orchestrator's filesystem.

The longer-term model is broader than executor skills:

- A plugin is a bundle of skills, MCP servers, connectors/apps, and
hooks.
- A plugin root can be local, executor-owned, or hosted by a backend.
- Components inside one plugin can use different access and execution
mechanisms. A skill may be read from a filesystem or through backend
tools; an HTTP MCP server can run without an executor; a stdio MCP
server or hook needs an execution environment.
- Core should carry generic extension initialization data. The extension
that owns a component should discover it, expose it to the model, and
invoke it through the appropriate runtime.

This PR establishes that architecture through one complete vertical:
selecting a root on an executor, discovering the skills beneath it,
exposing those skills to the model, and reading an explicitly invoked
`SKILL.md` through the same executor.

## Contract

`thread/start` gains an experimental `selectedCapabilityRoots` field:

```json
{
  "selectedCapabilityRoots": [
    {
      "id": "deploy-plugin@1",
      "location": {
        "type": "environment",
        "environmentId": "workspace",
        "path": "/opt/codex/plugins/deploy"
      }
    }
  ]
}
```

The root is intentionally not classified as a "plugin" or "skill" in the
API. It can point at a standalone skill, a directory containing several
skills, or a plugin containing skills and other components. This PR only
teaches the skills extension how to consume it; later extensions can
resolve MCP, connector, and hook components from the same selection.

The platform-supplied `id` is stable selection identity. The location
says which runtime owns the root and gives that runtime an opaque path.
App-server does not inspect or canonicalize the path.

## What changed

### Generic thread extension initialization

App-server converts selected roots into `ExtensionDataInit`. Core
carries that generic initialization value until the final thread ID is
known, then creates thread-scoped `ExtensionData` before lifecycle
contributors run.

This keeps `Session` and core independent of the capability-selection
contract. The initialization value is consumed during construction; it
is not retained as another long-lived `Session` field.

### Executor-backed skills

The skills extension now owns an `ExecutorSkillProvider` that:

- resolves the selected environment through `EnvironmentManager`
- discovers, canonicalizes, and reads skills through that environment's
`ExecutorFileSystem`
- contributes the bounded selected-skill catalog as stable developer
context
- reads an explicitly invoked skill body through the authority that
listed it
- warns when an environment or root is unavailable
- never falls back to the orchestrator filesystem for an executor-owned
root

Skill catalog and instruction fragments have hard byte bounds, which
also bound them below the 10K-token per-item context limit. If a
selected executor skill has the same name as a legacy local skill, the
executor selection owns that invocation and the local body is not
injected a second time.

Existing local and bundled skill loading remains in place. Omitting
`selectedCapabilityRoots` therefore preserves current local-only
behavior.

## Current semantics

- Only environment-owned locations are represented in this first
contract.
- Roots are resolved by the destination extension, not by app-server or
core.
- An unavailable executor or invalid root produces a warning and no
capabilities from that root; it does not trigger a local-filesystem
fallback.
- Selection applies to a newly started active thread.
- MCP servers, connectors, and hooks beneath a selected plugin root are
not activated yet.
- Selection is not yet persisted or inherited across resume, fork, or
subagent creation. Existing local capabilities continue to behave as
they do today in those flows.

## Planned vertical follow-ups

1. **Hosted HTTP MCP:** add an extension-backed HTTP MCP source that
works without an executor, then replace the special-purpose MCP plugins
loader with that implementation.
2. **Executor MCP:** register and execute stdio MCP servers through the
environment that owns the selected plugin root.
3. **Backend skills:** add a hosted skill source whose catalog and
bodies are accessed through extension tools rather than a filesystem.
4. **Connectors and hooks:** activate those components through their
owning extensions, using the same selected-root boundary and
component-specific runtime.
5. **Durable selection:** define the desired-selection lifecycle,
persist it, and make resume, fork, and subagent inheritance explicit
rather than accidental.
6. **Local convergence:** incrementally route existing local plugin,
skill, and MCP loading through the same extension model while preserving
current local behavior.

Each follow-up remains reviewable as an end-to-end capability. The
platform selects roots, generic thread extension data carries the
selection, and the owning extension resolves and operates its component.

## Verification

Coverage added for:

- app-server end-to-end discovery and explicit invocation of a skill
inside an executor-selected plugin root
- exclusive invocation when a selected executor skill collides with a
local skill name
- executor filesystem authority for discovery, canonicalization, and
reads
- thread extension initialization before lifecycle contributors run
- stable executor catalog context, explicit invocation, context
rebuilding, hidden skills, and preserved host/remote catalog behavior

Targeted protocol, core-skills, skills-extension, core lifecycle, and
app-server executor-skill tests were run during development.
2026-06-09 19:51:54 +02:00

540 lines
16 KiB
TOML

[workspace]
members = [
"aws-auth",
"analytics",
"agent-graph-store",
"agent-identity",
"backend-client",
"bwrap",
"ansi-escape",
"async-utils",
"app-server",
"app-server-transport",
"app-server-daemon",
"app-server-client",
"app-server-protocol",
"app-server-test-client",
"apply-patch",
"arg0",
"feedback",
"features",
"install-context",
"codex-backend-openapi-models",
"code-mode",
"cloud-config",
"cloud-tasks",
"cloud-tasks-client",
"cloud-tasks-mock-client",
"cli",
"collaboration-mode-templates",
"connectors",
"config",
"context-fragments",
"shell-command",
"shell-escalation",
"skills",
"core",
"core-api",
"core-plugins",
"core-skills",
"hooks",
"secrets",
"exec",
"file-system",
"exec-server",
"execpolicy",
"execpolicy-legacy",
"ext/extension-api",
"ext/goal",
"ext/guardian",
"ext/image-generation",
"ext/memories",
"ext/skills",
"ext/web-search",
"external-agent-migration",
"external-agent-sessions",
"keyring-store",
"file-search",
"file-watcher",
"linux-sandbox",
"lmstudio",
"login",
"codex-mcp",
"mcp-server",
"memories/read",
"memories/write",
"model-provider-info",
"models-manager",
"network-proxy",
"ollama",
"process-hardening",
"protocol",
"realtime-webrtc",
"prompts",
"rollout",
"rollout-trace",
"rmcp-client",
"responses-api-proxy",
"response-debug-context",
"sandboxing",
"stdio-to-uds",
"otel",
"tui",
"tools",
"v8-poc",
"utils/absolute-path",
"utils/path-uri",
"utils/cargo-bin",
"git-utils",
"utils/cache",
"utils/image",
"utils/json-to-toml",
"utils/home-dir",
"utils/pty",
"utils/readiness",
"utils/rustls-provider",
"utils/string",
"utils/cli",
"utils/elapsed",
"utils/sandbox-summary",
"utils/sleep-inhibitor",
"utils/approval-presets",
"utils/oss",
"utils/output-truncation",
"utils/path-utils",
"utils/plugins",
"utils/fuzzy-match",
"utils/stream-parser",
"utils/template",
"codex-client",
"codex-api",
"state",
"terminal-detection",
"test-binary-support",
"thread-manager-sample",
"thread-store",
"uds",
"codex-experimental-api-macros",
"plugin",
"model-provider",
]
resolver = "2"
[workspace.package]
version = "0.0.0"
# Track the edition for all workspace crates in one place. Individual
# crates can still override this value, but keeping it here means new
# crates created with `cargo new -w ...` automatically inherit the 2024
# edition.
edition = "2024"
license = "Apache-2.0"
[workspace.dependencies]
# Internal
app_test_support = { path = "app-server/tests/common" }
codex-analytics = { path = "analytics" }
codex-agent-graph-store = { path = "agent-graph-store" }
codex-agent-identity = { path = "agent-identity" }
codex-ansi-escape = { path = "ansi-escape" }
codex-api = { path = "codex-api" }
codex-aws-auth = { path = "aws-auth" }
codex-app-server = { path = "app-server" }
codex-app-server-transport = { path = "app-server-transport" }
codex-app-server-daemon = { path = "app-server-daemon" }
codex-app-server-client = { path = "app-server-client" }
codex-app-server-protocol = { path = "app-server-protocol" }
codex-app-server-test-client = { path = "app-server-test-client" }
codex-apply-patch = { path = "apply-patch" }
codex-arg0 = { path = "arg0" }
codex-async-utils = { path = "async-utils" }
codex-backend-client = { path = "backend-client" }
codex-chatgpt = { path = "chatgpt" }
codex-cli = { path = "cli" }
codex-client = { path = "codex-client" }
codex-collaboration-mode-templates = { path = "collaboration-mode-templates" }
codex-cloud-config = { path = "cloud-config" }
codex-cloud-tasks-client = { path = "cloud-tasks-client" }
codex-cloud-tasks-mock-client = { path = "cloud-tasks-mock-client" }
codex-code-mode = { path = "code-mode" }
codex-config = { path = "config" }
codex-connectors = { path = "connectors" }
codex-context-fragments = { path = "context-fragments" }
codex-core = { path = "core" }
codex-core-api = { path = "core-api" }
codex-core-plugins = { path = "core-plugins" }
codex-core-skills = { path = "core-skills" }
codex-exec = { path = "exec" }
codex-file-system = { path = "file-system" }
codex-exec-server = { path = "exec-server" }
codex-execpolicy = { path = "execpolicy" }
codex-extension-api = { path = "ext/extension-api" }
codex-goal-extension = { path = "ext/goal" }
codex-guardian = { path = "ext/guardian" }
codex-image-generation-extension = { path = "ext/image-generation" }
codex-external-agent-migration = { path = "external-agent-migration" }
codex-external-agent-sessions = { path = "external-agent-sessions" }
codex-experimental-api-macros = { path = "codex-experimental-api-macros" }
codex-features = { path = "features" }
codex-feedback = { path = "feedback" }
codex-install-context = { path = "install-context" }
codex-file-search = { path = "file-search" }
codex-file-watcher = { path = "file-watcher" }
codex-git-utils = { path = "git-utils" }
codex-hooks = { path = "hooks" }
codex-keyring-store = { path = "keyring-store" }
codex-linux-sandbox = { path = "linux-sandbox" }
codex-lmstudio = { path = "lmstudio" }
codex-login = { path = "login" }
codex-message-history = { path = "message-history" }
codex-memories-extension = { path = "ext/memories" }
codex-web-search-extension = { path = "ext/web-search" }
codex-memories-read = { path = "memories/read" }
codex-memories-write = { path = "memories/write" }
codex-mcp = { path = "codex-mcp" }
codex-mcp-server = { path = "mcp-server" }
codex-model-provider-info = { path = "model-provider-info" }
codex-models-manager = { path = "models-manager" }
codex-network-proxy = { path = "network-proxy" }
codex-ollama = { path = "ollama" }
codex-otel = { path = "otel" }
codex-plugin = { path = "plugin" }
codex-model-provider = { path = "model-provider" }
codex-process-hardening = { path = "process-hardening" }
codex-protocol = { path = "protocol" }
codex-realtime-webrtc = { path = "realtime-webrtc" }
codex-prompts = { path = "prompts" }
codex-responses-api-proxy = { path = "responses-api-proxy" }
codex-response-debug-context = { path = "response-debug-context" }
codex-rmcp-client = { path = "rmcp-client" }
codex-rollout = { path = "rollout" }
codex-rollout-trace = { path = "rollout-trace" }
codex-sandboxing = { path = "sandboxing" }
codex-secrets = { path = "secrets" }
codex-shell-command = { path = "shell-command" }
codex-shell-escalation = { path = "shell-escalation" }
codex-skills-extension = { path = "ext/skills" }
codex-skills = { path = "skills" }
codex-state = { path = "state" }
codex-stdio-to-uds = { path = "stdio-to-uds" }
codex-terminal-detection = { path = "terminal-detection" }
codex-test-binary-support = { path = "test-binary-support" }
codex-thread-store = { path = "thread-store" }
codex-tools = { path = "tools" }
codex-tui = { path = "tui" }
codex-uds = { path = "uds" }
codex-utils-absolute-path = { path = "utils/absolute-path" }
codex-utils-approval-presets = { path = "utils/approval-presets" }
codex-utils-cache = { path = "utils/cache" }
codex-utils-cargo-bin = { path = "utils/cargo-bin" }
codex-utils-cli = { path = "utils/cli" }
codex-utils-elapsed = { path = "utils/elapsed" }
codex-utils-fuzzy-match = { path = "utils/fuzzy-match" }
codex-utils-home-dir = { path = "utils/home-dir" }
codex-utils-image = { path = "utils/image" }
codex-utils-json-to-toml = { path = "utils/json-to-toml" }
codex-utils-oss = { path = "utils/oss" }
codex-utils-output-truncation = { path = "utils/output-truncation" }
codex-utils-path = { path = "utils/path-utils" }
codex-utils-plugins = { path = "utils/plugins" }
codex-utils-pty = { path = "utils/pty" }
codex-utils-rustls-provider = { path = "utils/rustls-provider" }
codex-utils-sandbox-summary = { path = "utils/sandbox-summary" }
codex-utils-sleep-inhibitor = { path = "utils/sleep-inhibitor" }
codex-utils-stream-parser = { path = "utils/stream-parser" }
codex-utils-string = { path = "utils/string" }
codex-utils-template = { path = "utils/template" }
codex-v8-poc = { path = "v8-poc" }
codex-windows-sandbox = { path = "windows-sandbox-rs" }
core_test_support = { path = "core/tests/common" }
mcp_test_support = { path = "mcp-server/tests/common" }
# External
age = "0.11.1"
allocative = "0.3.3"
ansi-to-tui = "7.0.0"
anyhow = "1"
arboard = { version = "3", features = ["wayland-data-control"] }
arc-swap = "1.9.0"
assert_cmd = "2"
assert_matches = "1.5.0"
async-channel = "2.3.1"
async-io = "2.6.0"
async-stream = "0.3.6"
async-trait = "0.1.89"
aws-config = "1"
aws-credential-types = "1"
aws-sigv4 = "1"
aws-types = "1"
axum = { version = "0.8", default-features = false }
base64 = "0.22.1"
bm25 = "2.3.2"
bytes = "1.10.1"
chardetng = "0.1.17"
chrono = "0.4.43"
clap = "4"
clap_complete = "4"
color-eyre = "0.6.3"
constant_time_eq = "0.3.1"
crossbeam-channel = "0.5.15"
crypto_box = { version = "0.9.1", features = ["seal"] }
crossterm = "0.28.1"
csv = "1.3.1"
ctor = "0.6.3"
deno_core_icudata = "0.77.0"
derive_more = "2"
diffy = "0.4.2"
dirs = "6"
divan = "0.1.21"
dns-lookup = "3.0.1"
dotenvy = "0.15.7"
dunce = "1.0.4"
ed25519-dalek = { version = "2.2.0", features = ["pkcs8"] }
encoding_rs = "0.8.35"
env_logger = "0.11.9"
eventsource-stream = "0.2.3"
flate2 = "1.1.8"
futures = { version = "0.3", default-features = false }
gethostname = "1.1.0"
gix = { version = "0.81.0", default-features = false, features = ["sha1"] }
glob = "0.3"
globset = "0.4"
hmac = "0.12.1"
http = "1.3.1"
iana-time-zone = "0.1.64"
icu_decimal = "2.1"
icu_locale_core = "2.1"
icu_provider = { version = "2.1", features = ["sync"] }
ignore = "0.4.23"
image = { version = "^0.25.9", default-features = false }
include_dir = "0.7.4"
indexmap = "2.12.0"
insta = "1.46.3"
inventory = "0.3.19"
itertools = "0.14.0"
jsonptr = { version = "0.7.1", default-features = false }
jsonwebtoken = "9.3.1"
keyring = { version = "3.6", default-features = false }
landlock = "0.4.4"
lazy_static = "1"
libc = "0.2.182"
log = "0.4"
lru = "0.16.3"
maplit = "1.0.2"
memchr = "2.7.6"
mime_guess = "2.0.5"
multimap = "0.10.0"
notify = "8.2.0"
nucleo = { git = "https://github.com/helix-editor/nucleo.git", rev = "4253de9faabb4e5c6d81d946a5e35a90f87347ee" }
once_cell = "1.20.2"
openssl-sys = "*"
opentelemetry = "0.31.0"
opentelemetry-appender-tracing = "0.31.0"
opentelemetry-otlp = "0.31.0"
opentelemetry-semantic-conventions = "0.31.0"
opentelemetry_sdk = "0.31.0"
os_info = "3.12.0"
owo-colors = "4.3.0"
path-absolutize = "3.1.1"
pathdiff = "0.2"
portable-pty = "0.9.0"
predicates = "3"
pretty_assertions = "1.4.1"
pulldown-cmark = "0.10"
quick-xml = "0.38.4"
rand = "0.9"
ratatui = "0.29.0"
ratatui-macros = "0.6.0"
rcgen = { version = "0.14.7", default-features = false, features = [
"aws_lc_rs",
"pem",
] }
regex = "1.12.3"
regex-lite = "0.1.8"
reqwest = { version = "0.12", features = ["cookies"] }
rmcp = { version = "1.7.0", default-features = false }
runfiles = { git = "https://github.com/dzbarsky/rules_rust", rev = "b56cbaa8465e74127f1ea216f813cd377295ad81" }
rustls = { version = "0.23", default-features = false, features = [
"ring",
"std",
] }
rustls-native-certs = "0.8.3"
rustls-pki-types = "1.14.0"
schemars = "0.8.22"
seccompiler = "0.5.0"
semver = "1.0"
sentry = "0.46.0"
serde = "1"
serde_ignored = "0.1.14"
serde_json = "1"
serde_path_to_error = "0.1.20"
serde_with = "3.17"
serde_yaml = "0.9"
serial_test = "3.2.0"
sha1 = "0.10.6"
sha2 = "0.10"
shlex = "1.3.0"
similar = "2.7.0"
socket2 = "0.6.1"
sqlx = { version = "0.9.0", default-features = false, features = [
"chrono",
"json",
"macros",
"migrate",
"runtime-tokio",
"tls-rustls",
"sqlite-bundled",
"time",
"uuid",
] }
starlark = { version = "0.14.2", default-features = false }
strum = "0.27.2"
strum_macros = "0.28.0"
supports-color = "3.0.2"
syntect = "5"
sys-locale = "0.3.2"
tar = { version = "=0.4.45", default-features = false }
tempfile = "3.23.0"
test-log = "0.2.19"
textwrap = "0.16.2"
thiserror = "2.0.17"
time = "0.3.47"
tiny_http = "0.12"
tokio = "1"
tokio-stream = "0.1.18"
tokio-test = "0.4"
tokio-tungstenite = { version = "0.28.0", features = [
"proxy",
"rustls-tls-native-roots",
] }
tokio-util = "0.7.18"
toml = "0.9.5"
toml_edit = "0.24.0"
tracing = "0.1.44"
tracing-appender = "0.2.3"
tracing-opentelemetry = "0.32.0"
tracing-subscriber = "0.3.22"
tracing-test = "0.2.5"
tonic = { version = "0.14.3", default-features = false, features = ["channel", "codegen"] }
tonic-prost = "0.14.3"
tree-sitter = "0.25.10"
tree-sitter-bash = "0.25"
ts-rs = "11"
tungstenite = { version = "0.27.0", features = ["deflate", "proxy"] }
uds_windows = "1.1.0"
unicode-segmentation = "1.12.0"
unicode-width = "0.2"
url = "2"
urlencoding = "2.1"
uuid = "1"
v8 = "=149.2.0"
vt100 = "0.16.2"
walkdir = "2.5.0"
webbrowser = "1.0"
which = "8"
whoami = "1.6.1"
wildmatch = "2.6.1"
winapi-util = "0.1.11"
zip = "2.4.2"
zstd = "0.13"
wiremock = "0.6"
zeroize = "1.8.2"
[workspace.lints]
rust = {}
[workspace.lints.clippy]
await_holding_invalid_type = "deny"
await_holding_lock = "deny"
expect_used = "deny"
identity_op = "deny"
manual_clamp = "deny"
manual_filter = "deny"
manual_find = "deny"
manual_flatten = "deny"
manual_map = "deny"
manual_memcpy = "deny"
manual_non_exhaustive = "deny"
manual_ok_or = "deny"
manual_range_contains = "deny"
manual_retain = "deny"
manual_strip = "deny"
manual_try_fold = "deny"
manual_unwrap_or = "deny"
needless_borrow = "deny"
needless_borrowed_reference = "deny"
needless_collect = "deny"
needless_late_init = "deny"
needless_option_as_deref = "deny"
needless_question_mark = "deny"
needless_update = "deny"
redundant_clone = "deny"
redundant_closure = "deny"
redundant_closure_for_method_calls = "deny"
redundant_static_lifetimes = "deny"
trivially_copy_pass_by_ref = "deny"
uninlined_format_args = "deny"
unnecessary_filter_map = "deny"
unnecessary_lazy_evaluations = "deny"
unnecessary_sort_by = "deny"
unnecessary_to_owned = "deny"
unwrap_used = "deny"
# cargo-shear cannot see the platform-specific openssl-sys usage, so we
# silence the false positive here instead of deleting a real dependency.
[workspace.metadata.cargo-shear]
ignored = [
"codex-agent-graph-store",
"icu_provider",
"openssl-sys",
"codex-v8-poc",
]
[profile.dev]
# Keep line tables/backtraces while avoiding expensive full variable debug info
# across local dev builds.
debug = "limited"
[profile.dev-small]
inherits = "dev"
opt-level = 0
debug = "none"
strip = "symbols"
[profile.release]
lto = "thin"
debug = "line-tables-only"
split-debuginfo = "off"
# Keep release binaries symbolicateable until packaging has archived the
# sidecar symbols and stripped the binaries.
strip = false
# See https://github.com/openai/codex/issues/1411 for details.
codegen-units = 1
[profile.profiling]
inherits = "release"
debug = "full"
lto = false
strip = false
[profile.ci-test]
# Reduce binary size to reduce disk pressure.
debug = "limited"
inherits = "test"
opt-level = 0
[patch.crates-io]
# Uncomment to debug local changes.
# ratatui = { path = "../../ratatui" }
crossterm = { git = "https://github.com/nornagon/crossterm", rev = "87db8bfa6dc99427fd3b071681b07fc31c6ce995" }
ratatui = { git = "https://github.com/nornagon/ratatui", rev = "9b2ad1298408c45918ee9f8241a6f95498cdbed2" }
tokio-tungstenite = { git = "https://github.com/openai-oss-forks/tokio-tungstenite", rev = "132f5b39c862e3a970f731d709608b3e6276d5f6" }
tungstenite = { git = "https://github.com/openai-oss-forks/tungstenite-rs", rev = "9200079d3b54a1ff51072e24d81fd354f085156f" }
# Uncomment to debug local changes.
# rmcp = { path = "../../rust-sdk/crates/rmcp" }
[patch."ssh://git@github.com/openai-oss-forks/tungstenite-rs.git"]
tungstenite = { git = "https://github.com/openai-oss-forks/tungstenite-rs", rev = "9200079d3b54a1ff51072e24d81fd354f085156f" }