fact-checker

Verify code content and change claims against repository files and git diffs.

15|6|Updated May 7, 2026
One-click install
npx skills add https://github.com/MinhThang1009/dotclaude --skill fact-checker-minhthang1009
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: fact-checker
Source: https://github.com/MinhThang1009/dotclaude/tree/main/plugins/subagent-system/skills/fact-checker
Command: npx skills add https://github.com/MinhThang1009/dotclaude --skill fact-checker-minhthang1009

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps verify claims about code content or changes by cross-checking with the repository to detect hallucinations or unverified narratives.

Core Features & Use Cases

  • Content claims verification: Read the cited file location and confirm whether the claim matches the actual code, including nearby context for nuance.
  • State claims verification: Compare actions taken via diffs (git diff) to validate whether changes occurred as claimed.
  • Use Case: When a subagent asserts a change or a line-level fact, run fact-checker to confirm accuracy against the repository state.

Quick Start

Ask it to verify a recent claim by providing the file path and the exact claim to check.

Frequently Asked Questions about fact-checker

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I verify agent claims about code content against the repository?

To verify agent claims about code content, you cross-check the cited file location against the actual repository state. This fact-checking process reads the target file and surrounding context to confirm whether the claim matches the existing code.

How do I validate state claims about code changes using git diff?

Validating state claims requires comparing actions taken via git diff against the repository history. This auditing process checks the diff history to confirm whether code changes occurred exactly as claimed by the subagent.

What is the best way to detect hallucinations in subagent code claims?

Detecting hallucinations in subagent code claims involves cross-checking assertions with the repository state. By evaluating content and state claims against the actual file content and git diffs, you produce a verdict with supporting evidence.

Can I check if a specific line-level fact in a file is accurate?

Yes, you can check a specific line-level fact by reading the cited file location and analyzing the surrounding context. This content claims verification confirms whether the exact code matches the actual repository content.

Does fact-checking code claims require access to the project workspace?

Yes, fact-checking code claims requires access to the project workspace, the target file, and the diff history. This environment access is necessary to evaluate claims accurately and produce a verdict with supporting evidence.