sync-theme

A manual command for synchronizing Claude Code and Codex themes with the current light or dark appearance of macOS. It sets light mode to gruvbox-light and dark mode to sunset-drive, installing those themes if needed.

In plain words
What is it for?
Use it to resync both editors immediately, check the detected macOS appearance, and see which themes were written.
Why use it?
It provides an on-demand refresh when the macOS appearance has changed and the editors have not updated. It also reports configuration problems from the synchronization script.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/ivanlutsenko/awac-ai-agent-plugins/sync-theme
Any agent
npx skills add IvanLutsenko/awac-ai-agent-plugins --skill sync-theme
Clone the repo
git clone --depth 1 https://github.com/IvanLutsenko/awac-ai-agent-plugins

Made for: Claude Code, Codex.

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 519 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00061 $0.00519
Opus 5 $0.00030 $0.00260
Sonnet 5 $0.00012 $0.00104
Haiku 4.5 $0.00006 $0.00052

Measured 2d ago against content hash 66ef1f21cca7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

sync-theme scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

- Claude Code — `~/.claude/settings.json` `theme` (light → `custom:gruvbox-light`, dark → `custom:sunset-drive`)
plugins/auto-theme/skills/sync-theme/SKILL.md · 46 lines

What it actually says

Auto Theme — manual sync

This plugin keeps editor themes in step with the macOS system appearance (light/dark). Switching is normally automatic via a UserPromptSubmit hook; this skill is the on-demand trigger.

Run the bundled script. It detects the macOS appearance and sets both editors:

  • Claude Code — ~/.claude/settings.json theme (light → custom:gruvbox-light, dark → custom:sunset-drive)
  • Codex — ~/.codex/config.toml [tui] theme (light → gruvbox-light, dark → sunset-drive)

It also installs the bundled themes on first run (~/.claude/themes/, ~/.codex/themes/) if absent.

Execution & Communication Rules:

  1. First, check if the host OS is Darwin (macOS). If not, refuse to run and output: Error: Host environment is not macOS.
  2. Run the bash command. Ensure you capture stderr.
  3. Run the script and surface any WARN: lines from stderr exactly as emitted.
  4. Treat WARN: <path> malformed, skipped and WARN: <path> not writable as script-reported configuration problems; do not invent different error text.
  5. Response Format: Output a 2-line bulleted summary detailing: Line 1: Detected OS appearance, Line 2: The exact themes written to both files. Do not include conversational filler.
bash "${CLAUDE_PLUGIN_ROOT:-${CODEX_PLUGIN_ROOT}}/sync-theme.sh"

Automatic switching (one-time setup)

Codex plugins cannot declare hooks in their manifest, so register the hook once in ~/.codex/hooks.json (then trust it via ~/.codex/config.toml [hooks.state]):

{
  "hooks": {
    "UserPromptSubmit": [
      { "hooks": [ { "type": "command", "command": "bash '<plugin-root>/sync-theme.sh'", "timeout": 10 } ] }
    ]
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 46 lines · 61 tokens per session scan B 66ef1f21cca7

Subscribe to this mod's changes

sync-theme is a skill published in the GitHub repository IvanLutsenko/awac-ai-agent-plugins (2 stars, last pushed 1mo ago), licensed MIT. It adds 61 tokens to every session and 519 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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