core-agent-ide/codex-rs/app-server-test-client
Celia Chen 340f9c9ecb
app-server: include experimental skill metadata in exec approval requests (#13929)
## Summary

This change surfaces skill metadata on command approval requests so
app-server clients can tell when an approval came from a skill script
and identify the originating `SKILL.md`.

- add `skill_metadata` to exec approval events in the shared protocol
- thread skill metadata through core shell escalation and delegated
approval handling for skill-triggered approvals
- expose the field in app-server v2 as experimental `skillMetadata`
- regenerate the JSON/TypeScript schemas and cover the new field in
protocol, transport, core, and TUI tests

## Why

Skill-triggered approvals already carry skill context inside core, but
app-server clients could not see which skill caused the prompt. Sending
the skill metadata with the approval request makes it possible for
clients to present better approval UX and connect the prompt back to the
relevant skill definition.


## example event in app-server-v2
verified that we see this event when experimental api is on:
```
< {
<   "id": 11,
<   "method": "item/commandExecution/requestApproval",
<   "params": {
<     "additionalPermissions": {
<       "fileSystem": null,
<       "macos": {
<         "accessibility": false,
<         "automations": {
<           "bundle_ids": [
<             "com.apple.Notes"
<           ]
<         },
<         "calendar": false,
<         "preferences": "read_only"
<       },
<       "network": null
<     },
<     "approvalId": "25d600ee-5a3c-4746-8d17-e2e61fb4c563",
<     "availableDecisions": [
<       "accept",
<       "acceptForSession",
<       "cancel"
<     ],
<     "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
<     "commandActions": [
<       {
<         "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
<         "type": "unknown"
<       }
<     ],
<     "cwd": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes",
<     "itemId": "call_jZp3xFpNg4D8iKAD49cvEvZy",
<     "skillMetadata": {
<       "pathToSkillsMd": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/SKILL.md"
<     },
<     "threadId": "019ccc10-b7d3-7ff2-84fe-3a75e7681e69",
<     "turnId": "019ccc10-b848-76f1-81b3-4a1fa225493f"
<   }
< }`
```

& verified that this is the event when experimental api is off:
```
< {
<   "id": 13,
<   "method": "item/commandExecution/requestApproval",
<   "params": {
<     "approvalId": "5fbbf776-261b-4cf8-899b-c125b547f2c0",
<     "availableDecisions": [
<       "accept",
<       "acceptForSession",
<       "cancel"
<     ],
<     "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
<     "commandActions": [
<       {
<         "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
<         "type": "unknown"
<       }
<     ],
<     "cwd": "/Users/celia/code/codex/codex-rs",
<     "itemId": "call_OV2DHzTgYcbYtWaTTBWlocOt",
<     "threadId": "019ccc16-2a2b-7be1-8500-e00d45b892d4",
<     "turnId": "019ccc16-2a8e-7961-98ec-649600e7d06a"
<   }
< }
```
2026-03-08 18:07:46 -07:00
..
src app-server: include experimental skill metadata in exec approval requests (#13929) 2026-03-08 18:07:46 -07:00
BUILD.bazel chore: add codex debug app-server tooling (#10367) 2026-02-03 23:17:34 +00:00
Cargo.toml feat(app-server-test-client): OTEL setup for tracing (#13493) 2026-03-04 13:30:09 -08:00
README.md app-server: Add an ability to watch events in the test client (#13080) 2026-02-27 17:19:53 -08:00

App Server Test Client

Quickstart for running and hitting codex app-server.

Quickstart

Run from <reporoot>/codex-rs.

# 1) Build debug codex binary
cargo build -p codex-cli --bin codex

# 2) Start websocket app-server in background
cargo run -p codex-app-server-test-client -- \
  --codex-bin ./target/debug/codex \
  serve --listen ws://127.0.0.1:4222 --kill

# 3) Call app-server (defaults to ws://127.0.0.1:4222)
cargo run -p codex-app-server-test-client -- model-list

Watching Raw Inbound Traffic

Initialize a connection, then print every inbound JSON-RPC message until you stop it with Ctrl+C:

cargo run -p codex-app-server-test-client -- watch

Testing Thread Rejoin Behavior

Build and start an app server using commands above. The app-server log is written to /tmp/codex-app-server-test-client/app-server.log

1) Get a thread id

Create at least one thread, then list threads:

cargo run -p codex-app-server-test-client -- send-message-v2 "seed thread for rejoin test"
cargo run -p codex-app-server-test-client -- thread-list --limit 5

Copy a thread id from the thread-list output.

2) Rejoin while a turn is in progress (two terminals)

Terminal A:

cargo run --bin codex-app-server-test-client -- \
  resume-message-v2 <THREAD_ID> "respond with thorough docs on the rust core"

Terminal B (while Terminal A is still streaming):

cargo run --bin codex-app-server-test-client -- thread-resume <THREAD_ID>