codex-desktop is an unofficial, community-maintained Linux distribution of OpenAI’s ChatGPT desktop application, packaged for several Linux formats and desktop environments. Linux users install it to access Chat, Work, and Codex through a desktop app built from the signed upstream Linux payload. Its catalogue skills, agents, instructions, and MCP integration extend workflows around the application.
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.
npx skills add ilysenko/codex-desktop-linux --skill chronicle-skysightgit clone --depth 1 https://github.com/ilysenko/codex-desktop-linuxWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ilysenko/codex-desktop-linux/chronicle-skysight)<a href="https://agentmods.dev/skills/ilysenko/codex-desktop-linux/chronicle-skysight"><img src="https://agentmods.dev/badge/skills/ilysenko/codex-desktop-linux/chronicle-skysight.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00033 | $0.00153 |
| Opus 5 | $0.00016 | $0.00077 |
| Sonnet 5 | $0.00007 | $0.00031 |
| Haiku 4.5 | $0.00003 | $0.00015 |
Grade A, and why
chronicle-skysight scanned grade A with 0 findings 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 9d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Chronicle / Skysight
Call skysight_status first. Status and doctor calls are passive and must not
start capture. Call skysight_snapshot for one bounded activity snapshot.
Start continuous capture with skysight_start only after the user explicitly
requests it. Honor exclusions and use skysight_pause, skysight_resume, or
skysight_stop as requested. Chronicle-compatible resources stay local under
${CODEX_HOME:-$HOME/.codex}/memories/extensions/chronicle/resources.
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.
- 9d ago First seen · 14 lines · 33 tokens per session scan A 84f31efe5e7d
chronicle-skysight is a skill published in the GitHub repository ilysenko/codex-desktop-linux (3,779 stars, last pushed yesterday), licensed MIT. It adds 33 tokens to every session and 153 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
establishing-project-context
Use when the user asks to establish shared project language, or project work exposes a conflicting, renamed, or deprecated domain term that needs active semantic modeling. Routine small tasks stay on the fast path.
context-engineering
A project documentation framework that records a project's goals, requirements, roadmap, and current state in separate files. It also keeps those documents within set size limits for an AI coding agent.
error-experience-library
An error knowledge base that stores recurring error patterns, their causes, and the fixes that worked. It can search past entries and track whether each suggested fix succeeded.
durable-session-state
Persist plans, scope decisions, evidence, and reviewer/critic verdicts to durable files during long or multi-phase tasks so work survives context compaction, session resumes, and handoffs. Use for swarm-mode tasks, before context grows large, when recording approval gates, and when resuming after compaction or a…
token-optimization
Use when the user says 'token optimization', 'save tokens', 'context window', 'reduce tokens', 'token stack', or 'TokenStack', or asks about extending context window capacity. Covers TokenStack, the built-in compression proxy that shrinks Claude Code tool output before it reaches the Anthropic API. Do NOT use for…
state
Use when the user says 'update state', 'project state', 'where was I', or at session start to load current context.