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codex/codex-rs/core
T
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"
<   }
< }
```
340f9c9ecb ยท 2026-03-08 18:07:46 -07:00
History
..
2026-03-04 13:00:11 +00:00
2026-03-05 16:22:39 -08:00

codex-core

This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.

Dependencies

Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:

macOS

Expects /usr/bin/sandbox-exec to be present.

When using the workspace-write sandbox policy, the Seatbelt profile allows writes under the configured writable roots while keeping .git (directory or pointer file), the resolved gitdir: target, and .codex read-only.

Network access and filesystem read/write roots are controlled by SandboxPolicy. Seatbelt consumes the resolved policy and enforces it.

Seatbelt also supports macOS permission-profile extensions layered on top of SandboxPolicy:

  • no extension profile provided: keeps legacy default preferences read access (user-preference-read).
  • extension profile provided with no macos_preferences grant: does not add preferences access clauses.
  • macos_preferences = "readonly": enables cfprefs read clauses and user-preference-read.
  • macos_preferences = "readwrite": includes readonly clauses plus user-preference-write and cfprefs shm write clauses.
  • macos_automation = true: enables broad Apple Events send permissions.
  • macos_automation = ["com.apple.Notes", ...]: enables Apple Events send only to listed bundle IDs.
  • macos_accessibility = true: enables com.apple.axserver mach lookup.
  • macos_calendar = true: enables com.apple.CalendarAgent mach lookup.

Linux

Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.

All Platforms

Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.