Summary
A structured thinking partner that applies mental models to decisions and problems instead of just giving you answers. Triggers on phrases like "help me think through this," "what am I missing," or "play devil's advocate." The interesting bit is it tries to detect your thinking orientation first (are you genuinely exploring or just seeking validation?) and adjusts its approach accordingly. Comes loaded with 40+ mental models organized by situation type: inversion and pre-mortems for decisions, first principles for problems, feedback loops for systems. Not subtle about pushing back on your assumptions, which is exactly the point. Best for non-trivial decisions where you want your reasoning stress-tested, not rubber-stamped.
Install to Claude Code
npx -y skills add mattnowdev/thinking-partner --skill thinking-partner --agent claude-codeInstalls into .claude/skills of the current project.
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
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Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →
Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Files
SKILL.md
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Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →First SeenJun 3, 2026
