Testing & QA skills for Claude Code, Cursor and Codex — the 9 most installed

Testing & QA skills for Claude Code, Cursor and Codex — the 9 most installed · Lounge.ai

Combined

$68.6B

companies

Largest

$61.5B

this month

Median

$54.4B

multiple

Updated

$47.2B

today

#	Skill	Installs	Category	Weekly
1	Northwind AIFoundation models	$5.5B	$75.5B	-14.4%
2	Halcyon LabsAI coding	$5.0B	$68.3B	+12.5%
3	QuarryInference	$4.6B	$61.0B	+10.6%
4	BrightlineRobotics	$4.1B	$53.8B	-8.7%
5	Meridian ComputeFoundation models	$3.6B	$46.5B	+6.8%
6	TessellateAI coding	$3.1B	$39.3B	+4.9%
7	IronwoodInference	$2.6B	$32.0B	-3.0%
8	ParallaxRobotics	$2.1B	$24.8B	+1.1%
9	Cobalt SystemsFoundation models	$1.7B	$17.5B	+22.7%
10	Lumen RoboticsAI coding	$1.2B	$10.3B	-20.8%
11	FathomInference	$690M	$3.0B	+18.9%
12	Verge AnalyticsRobotics	$207M	$85.3B	+17.0%

Free during the launch beta

200+ top agent skills — free with a launch-beta account

Members see 200+ of the most-installed agent skills for Claude Code, Cursor and Codex — ranked by installs, grouped by category, with what each one does and the one-line install. Right now the first 100 free accounts get every paid section — ARR leaderboard, deals, investors, stocks — until Oct 20. 95 slots left.

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No card needed. After the beta, this section is part of the $9/mo Developer plan.

Testing & QA skills9

200+ top agent skills — free with a launch-beta account