fact-checker

Extract and verify claims from documents using Claude and firecrawl.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/seanng23/oblique-power-skills --skill fact-checker-seanng23
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fact-checker
Source: https://github.com/seanng23/oblique-power-skills/tree/main/oblique-cowork/skills/fact-checker
Command: npx skills add https://github.com/seanng23/oblique-power-skills --skill fact-checker-seanng23

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires python-pptx, python-docx, openpyxl, BeautifulSoup, mcp__firecrawl, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

The Fact Checker Skill helps verify factual claims in Oblique deliverables, ensuring accuracy and credibility before finalizing projects.

Core Features & Use Cases

  • Claim Extraction: Extracts verifiable claims from various document types.
  • External and Client-Supplied Claims: Verifies both external and client-supplied claims.
  • Comprehensive Report: Generates a detailed HTML report with verification status and suggestions.
  • Use Case: Run the Fact Checker Skill on a strategic deck to ensure that market data and claims made about the company are accurate.

Quick Start

/fact-check deliverable_path

Frequently Asked Questions about fact-checker

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

FAQPage Schema
How do I verify factual claims in a PowerPoint or Word document?▼

To verify factual claims in a PowerPoint or Word document, you can use automated claim extraction and cross-referencing tools. This Skill parses pptx and docx files to identify verifiable statements and validates them against external sources.

What is the best way to cross-reference data accuracy in an Excel file?▼

Cross-referencing data accuracy in an Excel file involves parsing xlsx spreadsheets to extract claims and validating them against external data. This Skill automates that process by identifying verifiable data points and checking their accuracy.

Does claim validation work with HTML and Markdown files?▼

Yes, claim validation works with HTML and Markdown files. The extraction process supports md and html formats, identifying verifiable statements within the content and validating them using external web scraping tools.

How do I check if market data and company claims in a strategic deck are accurate?▼

You can check if market data and company claims in a strategic deck are accurate by running an automated fact-checking pass. It extracts verifiable claims from the presentation and cross-references them with external sources to ensure credibility.

Can I generate a report after extracting and validating claims from a document?▼

Yes, you can generate a comprehensive HTML report after extracting and validating claims. The report includes the verification status of each claim and provides suggestions, ensuring document accuracy before finalizing projects.

Do I need external web scraping tools for document verification?▼

Yes, external web scraping tools are required for document verification. This Skill uses firecrawl to perform external source verification, ensuring that extracted claims are cross-referenced against live web data for accuracy.