farfield

---

name: farfield description: Use this skill when you need to verify that messages and responses appear in both: metadata: author: achimala

codex-window-debug

Use this skill when you need to verify that messages and responses appear in both:

• Codex.app UI
• Farfield web UI and server stream data

What this skill gives you

• A non-interactive window screenshot tool for Codex.app.
• A repeatable workflow to confirm cross-surface sync.

Tool path:

• skills/codex-window-debug/tools/codex-window-screenshot.mjs

Quick commands

Take a screenshot of the visible Codex window:

node skills/codex-window-debug/tools/codex-window-screenshot.mjs ~/Desktop/codex-app.png

Take a screenshot and prefer a window title match:

node skills/codex-window-debug/tools/codex-window-screenshot.mjs ~/Desktop/codex-app.png --title "part of title"

Debug workflow used for message sync issues

1. Check server health

curl -sS 'http://localhost:4311/api/health' | jq '.state.ipcConnected, .state.ipcInitialized, .state.lastError'

2. Send a test message to a target thread

TEST_MSG="ff-sync-test $(date +%s)"
curl -sS -X POST 'http://localhost:4311/api/threads/<THREAD_ID>/messages' \
  -H 'Content-Type: application/json' \
  --data "{\"text\":\"$TEST_MSG\"}" | jq '.'

3. Confirm stream events advanced

curl -sS 'http://localhost:4311/api/threads/<THREAD_ID>/stream-events?limit=200' | jq '.ok, (.events|length)'

4. Confirm thread data contains user and agent messages

curl -sS 'http://localhost:4311/api/threads/<THREAD_ID>?includeTurns=true' | \
  jq -r '.thread.turns[-2:][] | "TURN " + (.turnId // .id // "?") + " status=" + .status, (.items[] | "  " + .type + ":" + ((.text // .content[0].text // "")|tostring))'

5. Capture Codex.app and visually confirm same messages

node skills/codex-window-debug/tools/codex-window-screenshot.mjs ~/Desktop/codex-after.png

Notes

• The screenshot tool uses swift + screencapture -x -l <windowId>.
• It does not use interactive selection.
• It captures the currently visible Codex window. If you need a specific thread, bring that thread to the front first.

---

Source: achimala/farfield — distributed by TomeVault.