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Codex Trading Skills

A Codex skill is a folder with a SKILL.md file. The file has a name and a description, and Codex loads that folder when the task is relevant. Trading skills add habits like position sizing and a pre-trade check. Skills do not place trades. Moby MCP does that, inside your limits.

Updated November 12, 2026 · By Moby

The Claude Code version of this guide is Claude trading skills.

How Codex skills install

Checked November 12, 2026 against OpenAI's own pages: Build skills on ChatGPT Learn, and Build skills for plugins. Both URLs returned those official pages.

The ChatGPT Learn page says a skill is a directory with a SKILL.md file, plus optional scripts and references. The SKILL.md file must include name and description. ChatGPT and Codex start with each skill's name and description, then load the full SKILL.md when they decide to use that skill.

The same page says Codex reads skills from repository, user, admin, and system locations. For a repository, Codex scans .agents/skills in every directory from the current working directory up to the repository root. The locations it lists are:

Repo. $CWD/.agents/skills, $CWD/../.agents/skills, and $REPO_ROOT/.agents/skills.
User. $HOME/.agents/skills, the personal folder for skills you want in any repository.
Admin. /etc/codex/skills, for a machine or container.
System. Skills bundled with Codex. The page says this set includes skill-creator and skill-installer, enabled by default.

To draft a skill in Codex, the page says to invoke $skill-creator. You can also create the folder and SKILL.md yourself. The page says Codex detects skill changes automatically. If an update does not appear, restart Codex.

For curated skills, the page says to use $skill-installer. Its example is $skill-installer linear. The same page says you can also ask the installer to download a skill from another repository. A marketplace skill still follows that listing's own install steps when the listing says Codex is supported.

The plugins page says a skill teaches ChatGPT and Codex how to use an MCP server's tools in a repeatable workflow. It says each skill lives in its own directory and requires a SKILL.md file that starts with a name and a description. In Codex, it says to invoke the creator as $skill-creator. That page does not list the folder paths above, and it does not mention $skill-installer. The folder paths and $skill-installer are from the ChatGPT Learn page.

Which marketplace skills work in Codex

Checked November 12, 2026. A skill is in the table only when its marketplace skills listing, or the README linked from that listing, says Codex is supported. Trade stance is the listing's own label.

Skill	Where Codex is named	Trade stance
Solana Rug Check	The listing install steps name Codex, Claude Code (CLI), Gemini CLI (with a paid Gemini API key or enterprise access) or Grok CLI. You save the listing's rules as a skill.	Suggests only
Web research	The listing's host data includes Codex. Its SoftwareApplication data names Codex in `operatingSystem`. The install steps say to use a client that can browse the web, and that there is nothing to install, then connect the Moby MCP.	Never trades
last30days	The listing install steps name Codex and give `npx skills add mvanhorn/last30days-skill -g`. The README also shows `npx skills add mvanhorn/last30days-skill -g -a codex`.	Never trades
OpenMobius ICT/SMC Skill	The listing install steps include `python3 install.py --platform codex`. The README says that flag installs to `~/.agents/skills/openmobius-skill/`.	Never trades
AI Trading Invite Engine	The listing install steps name Codex, Claude Code (CLI), Gemini CLI (with a paid Gemini API key or enterprise access) or Grok CLI. The skill shares your invite codes.	Never trades

Third-party code: Moby does not audit it. Read the source before you run it.

Checked and left off

These skills listings do not say Codex is supported, so this page does not claim they run in Codex.

Claude Trading Skills. The listing hosts are Grok Bot and Claude Code. The install steps copy folders into ~/.claude/skills/. The README section "Use with Claude Code" copies a skill folder to ~/.claude/skills/. That README does not mention Codex. The Claude Code guide is Claude trading skills.
X research. The listing says: "This is Grok Bot only, because other clients cannot read X in real time."
Grok Bot Pages. The listing says: "Pages are Grok Bot only."

Pair it with Moby

A trading skill adds a habit before a trade, such as position sizing or a pre-trade check. It does not send the order. Connect Codex from the Moby for Codex setup. That setup uses your agent key. Codex sends it as Authorization: Bearer from the MOBY_API_KEY variable. The remote MCP URL on that page is https://mcp.moby.win/mcp. The connector listing is Moby MCP.

You set your agent's limits on max per trade, daily buy limit and market-cap range from the Moby app, and Moby checks them server-side on every buy your agent makes.

The agent wallet is funded in Solana USDC. You manage your agent from your phone. Set the limits in the Moby app, then come back to Codex. You can ask before every trade. Moby refuses agent buys on tokens it rates red, and there is no transfer tool.

The same Moby MCP connection is documented for Claude Code CLI, Grok CLI, and Gemini CLI (with a paid Gemini API key or enterprise access). In ChatGPT, paste your personal Moby connector URL from the app. ChatGPT: works on Business, Enterprise and Edu workspaces that allow custom MCP servers (web).

Sources checked November 12, 2026

FAQ

What are Codex skills?

Codex skills are folders with a SKILL.md file. The file has a name and a description. Codex starts with that name and description, then loads the full SKILL.md when it decides to use the skill.

Can Codex trade crypto?

Through an MCP like Moby, inside your limits. A skill does not place the trade. Connect Moby with your agent key, and Moby checks every buy against the limits you set in the app.

How do I install a trading skill in Codex?

Put the skill folder in $HOME/.agents/skills, or in .agents/skills in the repo. Invoke $skill-creator to draft one, or $skill-installer for a curated skill. OpenAI's Build skills page documents those paths. For a marketplace skill, follow that listing's install steps, and only when the listing or its README says Codex is supported.

Do Codex trading skills place trades?

No. A Codex trading skill adds a habit, such as position sizing or a pre-trade check. It does not place trades. Moby MCP places trades, inside your limits.

Set up a Moby Agent

One agent, its own wallet, funded in Solana USDC, with limits you set in the app. You manage it from your phone.

Set up Codex Moby MCP Download Moby

Not financial, legal, or tax advice. Trading can lose money. Published by Moby on November 12, 2026. Install paths are from the OpenAI pages linked above. Skill support is from each listing or README linked above, checked that day.