collaborating-with-codex

collaborating-with-codex is a skill for Claude Code, Codex from appautomaton/agent-designer. It costs 42 tokens per session (3,264 once invoked), scanned A, original, no licence file.

A workflow for asking the Codex command-line tool to help with software prototypes, debugging, code reviews, implementation handoffs, and second opinions. It supports continuing conversations through session IDs.

In plain words
What is it for?
Prototyping, investigating bugs, reviewing code, handing implementation to another agent, and comparing coding approaches.
Why use it?
It provides a way to pass work or questions to another Codex session while preserving conversation context.

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/appautomaton/agent-designer/collaborating-with-codex
Any agent
npx skills add appautomaton/agent-designer --skill collaborating-with-codex
Clone the repo
git clone --depth 1 https://github.com/appautomaton/agent-designer

Made for: Claude Code, 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 collaborating-with-codex

README.md
[![agentmods](https://agentmods.dev/badge/skills/appautomaton/agent-designer/collaborating-with-codex.svg)](https://agentmods.dev/skills/appautomaton/agent-designer/collaborating-with-codex)
Your own site
<a href="https://agentmods.dev/skills/appautomaton/agent-designer/collaborating-with-codex"><img src="https://agentmods.dev/badge/skills/appautomaton/agent-designer/collaborating-with-codex.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,264 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00042 $0.03264
Opus 5 $0.00021 $0.01632
Sonnet 5 $0.00008 $0.00653
Haiku 4.5 $0.00004 $0.00326

Measured 4d ago against content hash 504d58c0bf7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

collaborating-with-codex scanned grade A 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/codex_bridge.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Shell network (`curl`, `pip`, `npm`): blocked in both `read-only` and `workspace-write`. Grant it only when the task needs it (dependency installs, integration tests) via `--sandbox workspace-write --network`, preferab
skills/collaborating-with-codex/SKILL.md · 237 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 4d ago First seen · 237 lines · 42 tokens per session scan A 504d58c0bf7d

Subscribe to this mod's changes

collaborating-with-codex is a skill published in the GitHub repository appautomaton/agent-designer (130 stars, last pushed 17d ago), with no licence file. It adds 42 tokens to every session and 3,264 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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