How do I install the Assumption Test Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/assumption-test/SKILL.md and restart Claude Code. Both flows are detailed at https://claudskills.com/install/.

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

ClaudSkills / Science & Research / science-misc

Assumption Test

Category: Science & Research · Sub-category: science-misc · Last updated: 2026-05-21

Design the smallest viable test to validate or invalidate a critical assumption. Based on Torres's assumption testing framework, organized by Gilad's AFTER model (Assessment → Fact-Finding → Tests → Experiments → Release Results).

From the source SKILL.md

Every solution rests on assumptions. Test the riskiest ones first with the lightest method possible.

What this skill does

Assumption Test is a community-contributed Claude Code skill in the science-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/assumption-test/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Assumption Test Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/assumption-test
curl -L https://claudskills.com/skills/assumption-test/SKILL.md \
  -o ~/.claude/skills/assumption-test/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/assumption-test/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/assumption-test/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\assumption-test\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

Source: https://github.com/haabe/mycelium/blob/97ec5ae7fb3cd51ca0177eefceb9502128dcdbfe/plugins/mycelium/skills/assumption-test/SKILL.md
License: MIT
Author: haabe

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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Assumption Test

From the source SKILL.md

What this skill does

Who uses this skill

How to install

Manual install (2 steps)

One-click install via the desktop app

Attribution & license

More Science & Research skills

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