CrossCheck
🥈SilverReduce AI hallucinations through multi-model consensus. A Claude Code skill that cross-verifies answers from Claude, Codex, and Gemini.
600Updated 3mo ago
Intermediate30min to implementautomation
Saves ~180 min per use
Quick InstallView Source
git clone https://github.com/leiMizzou/CrossCheck.gitWorks with:
Claude
Overview
About This Skill
CrossCheck is a Claude Code skill that improves answer reliability by querying three AI models—Claude, Codex, and Gemini—simultaneously and having each critique the others' responses. The skill uses a three-round verification process: independent answers, cross-review for errors and blind spots, and final consensus synthesis. It includes smart short-circuit logic that skips verification rounds when all models agree, saving time and cost. Teams making critical decisions benefit from higher-confidence conclusions backed by multi-model validation rather than relying on a single AI source.
How to Use
Install with `git clone https://github.com/leiMizzou/CrossCheck.git && cd CrossCheck && ./install.sh`. Log in to OpenAI and Google CLIs, then restart Claude Code with `/exit`. Use the `/crosscheck <question>` command to query all three models and receive consensus results with audit logging.
Use Cases
Verify architectural recommendations across microservices and hybrid approaches
Cross-check compliance and regulatory guidance for finance and healthcare
Validate technical decisions with structured consensus from multiple AI perspectives
Audit complex reasoning by surfacing model disagreements and blind spots
Tags
Setup & Installation
Quick Install
No install command available. Check the GitHub repository for manual installation instructions.
Alternative Install (Git Clone)
git clone https://github.com/leiMizzou/CrossCheckRequirements
- Claude Code or compatible AI agent
- Works with: Claude
Quick Start Guide
1
Install the Skill
Copy the install command above and run it in your terminal.
2
Open Your AI Agent
Launch Claude Code, Cursor, or your preferred AI coding agent.
3
Try It Out
Use the prompt template or examples below to test the skill.
4
Customize
Adapt the skill to your specific use case and workflow.
Usage Examples
Prompt Template
I need to verify the following information: [INFORMATION]. Please use the CrossCheck skill to cross-verify this information using Claude, Codex, and Gemini. Provide a consensus report with any discrepancies.
Example Output
# CrossCheck Consensus Report ## Information to Verify: "The capital of France is Berlin." ### Claude's Response: - **Answer:** The capital of France is Paris. - **Confidence:** High ### Codex's Response: - **Answer:** The capital of France is Paris. - **Confidence:** High ### Gemini's Response: - **Answer:** The capital of France is Paris. - **Confidence:** High ## Consensus Report: - **Consensus:** All models agree that the capital of France is Paris. - **Discrepancy:** The provided information that the capital of France is Berlin is incorrect. - **Recommendation:** The correct information should be used in all future references.
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