doublecheck
About
The `doublecheck` skill is a three-layer verification pipeline for developers to validate AI-generated output. It extracts claims, performs web searches for supporting/contradicting sources, and runs adversarial reviews to flag potential hallucinations. It operates in both persistent and on-demand modes, producing structured reports with source links for human review.
Quick Install
Claude Code
Recommendednpx skills add github/awesome-copilot -a claude-code/plugin add https://github.com/github/awesome-copilotgit clone https://github.com/github/awesome-copilot.git ~/.claude/skills/doublecheckCopy and paste this command in Claude Code to install this skill
GitHub Repository
Frequently asked questions
What is the doublecheck skill?
doublecheck is a Claude Skill by github. Skills package instructions and resources that Claude loads on demand, so Claude can perform doublecheck-related tasks without extra prompting.
How do I install doublecheck?
Use the install commands on this page: add doublecheck to Claude Code as a plugin, or clone its repository into your skills directory, then restart Claude so it picks up the skill.
What category does doublecheck belong to?
doublecheck is in the Documentation category, tagged ai.
Is doublecheck free to use?
Yes. doublecheck is listed on AIMCP and free to install. It runs inside Claude, so no separate service account is required to use the skill itself.
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