cross-source-fact-verification

Cross-validate factual claims in drafts against multiple independent sources.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/shimo4228/claude-code-learned-skills --skill cross-source-fact-verification
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: cross-source-fact-verification
Source: https://github.com/shimo4228/claude-code-learned-skills/tree/main/skills/cross-source-fact-verification
Command: npx skills add https://github.com/shimo4228/claude-code-learned-skills --skill cross-source-fact-verification

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Drafts often contain factual claims that are wrong or misremembered. This skill cross-references multiple independent sources to verify dates, counts, sequences, and causal statements, reducing errors before publication.

Core Features & Use Cases

  • Identify verifiable claims in drafts (dates, quantities, order, causality).
  • Map independent sources (logs, MEMORY.md, git history, file timestamps, articles, drafts) to each claim.
  • Cross-reference results to produce a verified timeline or set of corrected assertions for editors and writers.

Quick Start

Provide a draft to the skill and instruct it to validate the factual claims across the specified sources.

Frequently Asked Questions about cross-source-fact-verification

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

FAQPage Schema
How do I fact-check dates and quantities in a draft against multiple sources?

Cross-source fact verification extracts verifiable claims from drafts and cross-references them against independent sources like git history, logs, and MEMORY.md to produce a verified timeline and corrected assertions for editors.

How do I verify causal statements and sequences in my drafts?

You can verify causal statements and sequences by applying cross-source fact-checking against independent sources like existing articles, notes, and memory of learned skills to determine their reliability before publication.

What independent sources can I use to cross-reference factual claims in reports?

Independent sources for cross-referencing factual claims include logs, MEMORY.md, git history, file timestamps, existing articles, drafts, and memory of learned skills to validate dates, counts, and order.

Can I use file timestamps and git history to validate misremembered facts in drafts?

Yes, you can use file timestamps and git history to validate misremembered facts in drafts by mapping them as independent sources to specific claims, cross-referencing results to reduce errors before publication.

What is the best way to cross-check draft facts across independent sources before publication?

The best way to cross-check draft facts is extracting verifiable claims and mapping them to independent sources like logs, MEMORY.md, and git history, producing a verified timeline of corrected assertions for writers and editors.

When should I use cross-source verification for draft fact-checking?

You should use cross-source verification when drafts contain factual claims that might be wrong or misremembered, applying it to dates, counts, sequences, and causal statements across drafts, reports, and notes to reduce publication errors.