How to Share Your Skills Between Claude Code, Codex and Antigravity

Why your skills get stuck in one agent

A skill is just a folder with a SKILL.md file inside. The nice part is that Claude Code, Codex, Antigravity and OpenCode all read the exact same format. The annoying part is that each one reads it from its own folder.

• Claude Code reads skills from ~/.claude/skills
• Codex reads them from ~/.codex/skills
• Antigravity reads them from ~/.gemini/antigravity-cli/skills
• OpenCode reads them from ~/.config/opencode/skills

So a skill you installed for Claude is simply invisible to Codex and Antigravity. Nothing is broken. It just lives in a folder the other agents never look at.

If you only use one agent, this never comes up. But the moment you jump between Claude Code, Codex and Antigravity in the same project, you notice that half your toolkit is missing depending on which one you opened.

The manual way (and why it gets old)

Because the format is identical, you can move a skill by hand. Copy the folder from one agent to the other:

cp -r ~/.claude/skills/my-skill ~/.codex/skills/
cp -r ~/.claude/skills/my-skill ~/.gemini/antigravity-cli/skills/

That works for one skill. It gets old fast when you have twenty, when you want them in two agents at once, and when you have to remember which ones you already copied and which ones you edited later.

Export your skills in one click with CodeAgentSwarm

CodeAgentSwarm does the same copy, but it shows you exactly what will happen and lets you pick. Here is the whole flow.

1. Open the Skills tab and click Export to agent

Go to Settings, open the Skills tab, and stay on Installed. Next to Refresh and Open Folder you will find the Export to agent button.

2. Pick the source, pick the targets, pick the skills

The modal asks three things. Where the skills come from (the source agent), where they should go (one or more target agents), and which skills you actually want. Every skill starts selected, so you deselect the ones you do not need.

Each skill tells you whether it is New in the target or Already in it, so you are never guessing what you are about to overwrite.

3. Choose overwrite or skip, then export

The Overwrite existing toggle controls what happens with skills that are already in a target. Off (the default) skips them and keeps whatever is there. On replaces them with the source version. When you are ready, click Export and watch it run, agent by agent.

Overwrite or skip: which one to pick

A simple rule that keeps you out of trouble:

• Leave Overwrite off when you just want the target to have your skills and you do not want to touch anything already there. Anything that exists is skipped.
• Turn Overwrite on when you edited a skill in the source and want the target to match it exactly. It replaces the target copy.

Off is the safe default on purpose. It will never quietly replace a skill you tuned for a specific agent.

One toolkit across every agent

The point of this is simple. You set up your skills once, in whichever agent you like, and then every agent you use has the same toolkit. No reinstalling the same skill three times, no folder juggling.

If you are still building your skill collection, the built in marketplace is the fastest way to fill it: How to browse and install skills from the CodeAgentSwarm marketplace. Install them once, then export them everywhere.

And if you are running several agents side by side, this pairs well with the multi agent workflow: How to run Claude Code, Codex and Gemini agents in parallel.