Agent Skills Usage

[Anand S]

I have a bunch of coding agent skills I've accumulated over the last few months. Here's how often my sessions use them:

Skill	Claude	Codex	Copilot	Overall
code	6.1%	69.1%	37.5%	51.5%
data-story	48.7%	16.4%	37.5%	28.0%
data-analysis	2.6%	35.2%	7.8%	21.8%
design	25.5%	23.6%	14.1%	21.8%
plan	8.5%	11.8%	14.1%	11.8%
agent-friendly-cli	3.7%	13.8%	11.1%	11.2%
devtools	20.4%	7.3%	9.4%	10.0%
llm	2.5%	8.7%	7.8%	7.4%
pdf	0.0%	7.9%	7.8%	6.6%
linkedin-cdp	14.3%	0.0%	5.6%	5.3%
uv-uvx	0.0%	9.5%	0.0%	4.9%
interactive-storytelling	7.1%	2.7%	7.1%	4.6%
demos	8.5%	2.8%	1.6%	3.5%
cloudflare	0.0%	4.3%	3.1%	3.3%
melt-mlt	0.0%	2.5%	1.6%	1.8%
vector-art	2.5%	2.4%	0.0%	1.7%
vitest-dom	0.0%	2.2%	0.0%	1.4%
memorable-explanations	2.6%	1.6%	0.0%	1.3%
npm-packages	0.0%	0.6%	0.0%	0.3%

Here are my observations, with surprises highlighted as ⁉️

• code is the most used skill, by far. About half the sessions use it.
  • But Claude doesn't use it much⁉️
• The data-story and data-analysis skills were the most rapidly adopted.
  • I use Claude (with Claude Code and Copilot) a lot more for data stories. I use Codex for data analysis.
  • Therefore the webapp-testing and devtools skilss are used less by Codex.
• The design skill is used consistently across agents. It was inspired by Claude's design skill - but I don't think it is particularly good, and needs revision.
• agent-friendly-cli tool development is mostly with Codex, followed by Copilot, and very little with Claude.
• Most pdf sessions are with Copilot / Codex, not Claude⁉️
• Codex reads most skills diligengly.
  • It is the only one diligently reading my uv-uvx skill, even though every agent uses it⁉️
  • In fact, it is the only agent to have read every skill except linkedin-cdp (it never needed it.)