Borrowing it
Nothing to install: this file belongs to akaghef/M3E. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/akaghef/M3E/main/.claude/skills/claude-codex-session-pack-20260214/skills/codex-spark/SKILL.mdgit clone --depth 1 https://github.com/akaghef/M3EWrote 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/akaghef/m3e/codex-spark)<a href="https://agentmods.dev/skills/akaghef/m3e/codex-spark"><img src="https://agentmods.dev/badge/skills/akaghef/m3e/codex-spark/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/akaghef/m3e/codex-spark"><img src="https://agentmods.dev/badge/skills/akaghef/m3e/codex-spark.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00034 | $0.00443 |
| Opus 5.5 | $0.00014 | $0.00177 |
| Sonnet 5.5 | $0.00007 | $0.00089 |
| Haiku 4.5 | $0.00003 | $0.00044 |
Grade A, and why
codex-spark 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 5d 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
Codex Spark Session Manager
Codex CLI（gpt-5.3-codex-spark モデル）を使った高速実装用セッション管理。
/cx（gpt-5.2）は計画・設計用、/cxi（gpt-5.3-codex）は高精度実装用、/cxs（gpt-5.3-codex-spark）は高速実装用として使い分ける。
使い方
セッション作成
~/.claude/skills/codex-spark/scripts/start.sh [--cd <dir>] <name> "<初期プロンプト>"
セッション継続
~/.claude/skills/codex-spark/scripts/send.sh [--cd <dir>] <name> "<追加プロンプト>"
--cdを省略した場合、start.sh時の作業ディレクトリ設定を再利用します。
セッション一覧
~/.claude/skills/codex-spark/scripts/list.sh
セッション削除
~/.claude/skills/codex-spark/scripts/clear.sh <name>
~/.claude/skills/codex-spark/scripts/clear.sh --all
注意事項
- セッションIDは
~/.cache/ai-agent-sessions/codex-spark-session-<name>に保存される - 推論強度は
high（REASONING_EFFORT=high）で実行される /cx/cxiのセッションとは別管理（混同しない）- 実装は共通コア化され、継続時はログ探索結果を再利用する
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 47 lines · 34 tokens per session scan A 2efeadabb3c3
codex-spark is a skill published in the GitHub repository akaghef/M3E (11 stars, last pushed 5d ago), licensed MIT. It adds 34 tokens to every session and 443 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-02.
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