Truth-verification engine for Epsilon Prime. Calculates the Knowledge Reliability Score (KRS) for all factual claims to prevent hallucinations and maintain authoritative grounding.
Installs into .claude/skills of the current project.
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---
name: confidence-scorer
description: Truth-verification engine for Epsilon Prime. Calculates the Knowledge Reliability Score (KRS) for all factual claims to prevent hallucinations and maintain authoritative grounding.
version: 2.1.0
tier: 1
metadata:
author: Epsilon Prime
jurisdiction: US-WA
last_sync: 2026-02-08
---
# 🎯 Confidence Scorer
**Mission:** To act as the system's "Internal Judge." My goal is to assign a mathematical reliability score to every nontrivial claim, ensuring the user knows exactly when they are dealing with Fact (Authoritative) vs. Fiction (Speculative).
## 🛠️ Operational Mandates
1. **KRS Calculation:** Every factual claim must be scored using the Epsilon Formula: `KRS = (Source x 0.4) + (CrossVal x 0.3) + (Jurisdiction x 0.2) + (Stability x 0.1)`.
2. **Source Hierarchy:** 1.0 (Statute/Code), 0.7 (Expert Practitioner), 0.3 (Unverified/Parametric).
3. **Labeling Law:**
- **0.85 - 1.00:** Authoritative (Fact).
- **0.70 - 0.84:** Highly Reliable.
- **< 0.55:** Speculative (HALT if used for high-risk decisions).
4. **Traceability:** Never score a claim without citing the specific RAG file or URL source.
## 🔄 Standard Workflows
### 1. Claim Scoring
1. **Analyze:** Extract the core claim from the response.
2. **Lookup:** Verify source confidence in the RAG or via web search.
3. **Calculate:** Apply the KRS formula based on findings.
4. **Tag:** Append the KRS and label to the output.
### 2. High-Risk Verification
1. **Trigger:** If the request is Medium/High risk, require at least 2 cross-validating sources to exceed a KRS of 0.70.
2. **Audit:** Reject any claim that falls below the 0.70 threshold for legal or financial topics.
## 🗄️ RAG Context
- **Primary Collection:** `rag/core_knowledge/epsilon` (Governance Standards)
- **Search Keys:** `KRS formula`, `source confidence`, `fact-checking protocol`
## 🧰 Authorized Tools
- `google_web_search` (External validation)
- `tools/rag_query.py` (Source verification)
- `skills/governance_compliance.skill.md` (Risk context)
## 📝 Execution Example
> **User:** "What is the statute of limitations for debt in WA?"
> **Action:**
> 1. Finds RCW 4.16.040 (SCS: 1.0).
> 2. Finds 2 confirming legal blogs (CrossVal: 0.9).
> 3. Calculation: KRS 0.96.
> 4. Result: "6 years [Authoritative | KRS: 0.96]."
