arturseo-geo

Grounded Research Skill — Development skill for Claude Code

Development community

Anti-hallucination research skill for Claude Code — admits uncertainty, extracts direct quotes before analysis, cites every claim, retracts unverifiable statements.

How to install Grounded Research Skill

This entry records only its repository, not the path inside it, so there is no exact command to give. Open arturseo-geo/grounded-research-skill and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Grounded Research Skill does

Anti-hallucination research skill for Claude Code — admits uncertainty, extracts direct quotes before analysis, cites every claim, retracts unverifiable statements. Based on Anthropic's official guardrail techniques. By TheGEOLab.net

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README

grounded-research-skill

Built by **[Artur Ferreira](https://github.com/arturseo-geo)** @ **The GEO Lab** · [𝕏 @TheGEO_Lab](https://x.com/TheGEO_Lab) · [LinkedIn](https://linkedin.com/in/arturgeo) · [Reddit](https://www.reddit.com/user/Alternative_Teach_74/)

![Version](https://img.shields.io/badge/version-1.0.0-blue) ![Licence](https://img.shields.io/badge/licence-MIT-green) ![Claude Code](https://img.shields.io/badge/Claude_Code-skill-blueviolet) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen)](https://github.com/arturseo-geo/grounded-research-skill/blob/main/CONTRIBUTING.md)

Anti-hallucination research skill for Claude Code. Makes responses shorter and more conservative but dramatically more trustworthy.

Based on [Anthropic's official hallucination reduction techniques](https://docs.anthropic.com/en/docs/test-and-evaluate/strengthen-guardrails/reduce-hallucinations).

Why This Exists

Claude is excellent at research — but default behaviour optimises for helpfulness, which sometimes means filling gaps with plausible-sounding content rather than admitting uncertainty. This skill flips the trade-off: accuracy over completeness, silence over speculation.

**This is not a default mode.** It significantly constrains creativity. Use it when factual accuracy is non-negotiable.

The Three Techniques

1. Admit Uncertainty

Claude gets explicit permission — and a strict obligation — to say "I don't know" rather than fabricate a plausible answer. Every gap in knowledge is surfaced, not papered over.

2. Extract Before Analysing

For any task involving documents or sources, Claude extracts word-for-word quotes first, then builds analysis anchored to those quotes. No analysis without evidence.

3. Cite Every Claim

Every factual statement must point to a source or get an explicit "I can't verify this" disclaimer. After generating a response, Claude runs a self-audit — any claim that fails verification is **retracted publicly**, no