Your team won't use one AI app. Your skills shouldn't care which one they're in.

One person on your team lives in Claude. Another works in ChatGPT. Someone else uses Notion AI, and next year someone will be in an agent nobody has heard of yet.

You can't fix this by picking a winner. Asking people to leave the AI app they work in is like asking for their left arm. They will say yes in the meeting and keep using it anyway.

What happens to your team's know-how

Good prompts and methods get written inside whichever app or personal account their author happened to be using. After that, they get stuck.

So people cut and paste prompts into Slack. They send around markdown files that only some tools read. They share custom GPT links that only work for people on ChatGPT. Or they quietly recreate the work in their own app, slightly differently, and nobody notices that the team now has four versions of the same method.

None of this is carelessness. It is what happens when the know-how lives in the app instead of with the team.

A skill that runs from the app you already use

A skill is a structured input form plus fixed instructions. Because the method lives in the skill and not in a chat, it doesn't belong to any one app.

I ran into this myself. I connected Skillyo to Meta's new Muse agent and asked it to run my "local insider's guide" skill for an upcoming trip. The skill found places that matched my interests, including the Frida Kahlo Museum. The next morning Muse pinged me that tickets had gone on sale and offered to book them.

I have run that same skill from Claude, ChatGPT and Notion AI. Now I have run it from an agent that didn't exist two months ago. The quality is the same, and my colleagues see the same results from any of those apps.

The agent offered to book the tickets. The skill told it which ones.

Muse is a good example of how fast this moves. Sensor Tower estimated it reached 5 million downloads in 22 days after its September 8 launch, against 56 days for ChatGPT and 492 for Claude (9to5Mac). The race isn't like for like: Meta ramped up its ad spend partway through, and Claude launched on iOS only. But the direction is clear. A new AI app is showing up in people's workdays, and it won't be the last.

What this looks like for a team

Skills run from Claude, ChatGPT, Notion, Google Drive, and on any website with a one-line embed, including sites built with Lovable.

Every result lands in one shared skillspace. Colleagues can see what has been run and build on each other's work, instead of finding it in someone's chat history three weeks later. When you improve a skill, everyone gets the new version on their next run.

Take a skill like Rewrites for your audience. Say someone drafts a project update in ChatGPT. A colleague pastes it into Rewrites for your audience from Claude and gets the version written for an executive. The result lands in the shared skillspace, where the whole team can find it. Nobody has to ask which app the "good version" lives in.

Agents do the doing; skills carry the judgment

Agents are getting very good at the doing: searching, drafting, booking. That will keep improving, and the app that does it will keep changing.

A skill is your team's judgment about what is worth doing and how. That is the part worth writing down once, in a place that outlasts whichever app is popular this quarter.

Skillyo turns the methods your team repeats into skills that run from the AI app each person already uses. Pick one piece of repeat work, build it as a skill, and see what your colleagues get when they run it from their own app.