codex-fleet

codex-fleet is a skill for Codex from avenoxai/avenoxskills. It costs 234 tokens per session (9,086 once invoked), scanned B, original, MIT.

A runner for launching Codex CLI tasks, generating images, and coordinating several coding-agent jobs at once. A fleet is a group of parallel workers handling separate tasks.

In plain words
What is it for?
Use it for code reviews, refactors, analysis, image generation, or parallel multi-step coding tasks.
Why use it?
It turns these jobs into an executable workflow and can isolate simultaneous code changes in separate worktrees.

Skill for Codex

Written for Codex: runs codex exec. Also seen: reads .claude/ paths; positional $N argument; mentions Claude Code.

Not installable on its own: it reads a path above its own folder, which only exists inside its repository. The line is git worktree add --detach ../fleet-lane-A <BASE_SHA>.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Codex.

Wrote 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.

agentmods badge for codex-fleet

README.md
[![agentmods](https://agentmods.dev/badge/skills/avenoxai/avenoxskills/codex-fleet.svg)](https://agentmods.dev/skills/avenoxai/avenoxskills/codex-fleet)
Your own site
<a href="https://agentmods.dev/skills/avenoxai/avenoxskills/codex-fleet"><img src="https://agentmods.dev/badge/skills/avenoxai/avenoxskills/codex-fleet.svg" alt="Measured on agentmods" height="20"></a>
Per session 234 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,086 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 5.1 $0.00234 $0.09086
Opus 5 $0.00117 $0.04543
Sonnet 5 $0.00047 $0.01817
Haiku 4.5 $0.00023 $0.00909

Measured 6d ago against content hash a2dd35693afc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

codex-fleet 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 6d 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.

find ~/.codex/generated_images -type f -name '*.png' -mmin -5
skills/codex-fleet/SKILL.md · 596 lines

How it starts

The opening of the file, as written. The whole thing — 596 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codex Fleet — Standalone Action Runner

A single self-contained skill for driving the Codex CLI from any agent (Claude Code, Cursor, or your own harness). No external control plane required — everything here runs against a plain local codex install. Drop this file into .claude/skills/codex-fleet/SKILL.md (or your agent's skills dir) and go.

Built and battle-tested by Avenox. Share freely.

This skill does three things and ALWAYS executes them, never describes them:

  1. General Codex CLI tasks — code review, refactor, multi-file edits, analysis, diagnosis, anything you'd hand to a peer-AI for parallel processing.
  2. Image generation — real rendered images via Codex's built-in gpt-image-2 tool: backgrounds, portraits, icons, sigils, banners, UI assets, sprites, mockups, photoreal, infographics.
  3. Fleets — spawning many codex exec delegates in parallel (one lane or twenty), with worktree isolation for concurrent write lanes.

CRITICAL: This is an ACTION skill, not commentary

When invoked you MUST:

  1. Actually invoke codex exec via the Bash tool. Never write instructions for the user to run themselves.
  2. Default to background execution (run_in_background: true) for any task likely to take >10s. This lets the main agent continue other work in parallel while Codex runs. The harness notifies on completion.
  3. For multiple independent jobs, fire them ALL in parallel. Codex sessions don't contend. Compute is not the bottleneck — throughput is. If the user asks for 4 images or 3 codex investigations, that's 4 or 3 simultaneous Bash calls in one message, all run_in_background: true.
  4. Summarize results from logs after each background job completes — don't dump raw stdout unless asked.

If the user's request is "use codex to X" or "run codex on X", run codex exec ... "X". Don't wrap, don't paraphrase, don't ask "should I proceed" — just go.

Prerequisites

  • Codex CLI 0.128+ installed and authenticated (codex --version). Reasoning tiers low/medium/high/xhigh require 0.128+.
  • For the image-gen CLI fallback and gpt-image-1.5 transparency path only: OPENAI_API_KEY. The built-in image_gen tool uses your Codex subscription and needs no key.

Read the full file on GitHub · 596 lines

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. 6d ago First seen · 596 lines · 0 tokens per session scan B a2dd35693afc

Subscribe to this mod's changes

codex-fleet is a skill published in the GitHub repository avenoxai/avenoxskills (48 stars, last pushed 28d ago), licensed MIT. It adds 234 tokens to every session and 9,086 once invoked, about $0.0012 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 2026-08-30.

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