Check whether you're thinking in the right direction
Every AI tool helps you think faster. This one helps you notice when what you're doing might be wrong — before the consequences show up.
The problem
If you ask an AI to evaluate your plan, it evaluates your plan. It doesn't ask whether your plan is solving the right problem. If you ask it to brainstorm alternatives, it generates alternatives. It doesn't test whether those alternatives survive scrutiny.
These aren't failures of intelligence. They're failures of direction. The tool does what you asked — but what you asked might be wrong, and the tool has no mechanism to notice.
Two operations, in alternation
There are two fundamentally different operations in reasoning: exploration (what options exist?) and testing (which ones survive scrutiny?). Most tools do one or the other. This toolkit does both — in alternation — because they have structural blind spots that don't overlap.
Exploration alone finds options but can't tell you which ones work. Testing alone validates what you're looking at but can't tell you what you're not looking at. Alternating covers both.
What's included
207 reasoning skills
Structured prompts for Claude Code covering analysis, writing, planning, research, and decision-making. Classified by universality — Tier 1 skills apply whenever their trigger condition exists.
ARAW and UAUA
ARAW takes any claim and tests both branches recursively. UAUA alternates between mapping the full possibility space and testing what it finds. Four passes, two different logics.
Python tools
Auto-expand claims into branching trees. Visualize results in an interactive browser viewer. Synthesize findings across runs. Ground claims in evidence.
Foundations
The philosophical grounding: why alternation works, what makes a reasoning principle universal vs. heuristic, and the structure of careful thought.
Quick start
git clone https://github.com/benjam3n/reasoningtool.git
cd reasoningtool/claude-code-plugin
claude
Then type /araw should I change careers or /uaua 4x what's the best approach to learning math or any question worth thinking carefully about.