Sanity Check

by sterlingcrispin

Sanity Check is an AI Engineering skill for Claude Code, published by sterlingcrispin in claude_slash_commands.

200 stars18 forkson sterlingcrispin/claude_slash_commandsAdded 2026/09/05Repository updated 2026/03/31

View source on GitHub Download repo ZIP

claude-skillscodex-skills

Install in seconds

Install Sanity Check

Copy Sanity Check into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/sterlingcrispin/claude_slash_commands/tree/main/sanitycheck ~/.claude/skills/sanitycheck

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/sterlingcrispin/claude_slash_commands.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: sanitycheck/SKILL.md in sterlingcrispin/claude_slash_commands
Installs to: ~/.claude/skills/sanitycheck
Collection: One of 11 skills cataloged from this repository
Category: AI Engineering — 3101 skills

What Sanity Check does

Sanity Check asks an agent to summarize what is being built, why, progress so far, and whether the approach still makes sense. Use it for plain-language status checks and course correction.

Sanity Check is cataloged under AI Engineering on DirSkills. Sanity Check comes from a repository tagged claude-skills and codex-skills.

Documentation

README

From the original repository

Talk to me in plain language and gut check where we are at.

What is your understanding of what we are building?
Why are we building it?
What is the telos of it?
How are we approaching it?
What have we done so far?
How close are we to being done?
Do you have a clearly defined way of knowing you are done?
What is your current assessment of our approach, and progress?
What do you think we should keep doing, and change, if anything?
Any additional feedback or reflections or questions.

Frequently asked about Sanity Check

What else does sterlingcrispin publish alongside Sanity Check?
Sanity Check is one of 11 skills that DirSkills catalogs from sterlingcrispin/claude_slash_commands, the repository it ships in. Its siblings there include Audit Handoff, Checkpoint and Codex Audit. Each one is a separate skill with its own page in this directory, installs the same way Sanity Check does, and is maintained by sterlingcrispin in that same repository. The rest of the collection is listed on the sterlingcrispin/claude_slash_commands page.
How does Sanity Check compare to other AI Engineering skills?
Sanity Check ranks #2856 by stars among the 3101 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Sanity Check against them. Open each page to compare what they document and how they install.