fact-checker

name	fact-checker
description	Verifies factual claims in documents using web search and official sources, then proposes corrections with user confirmation. Use when the user asks to fact-check, verify information, validate claims, check accuracy, or update outdated information in documents. Supports AI model specs, technical documentation, statistics, and general factual statements.
zh_description	用于事实、checker，支持信息整理、沟通和执行管理。
version	1.1.0
author	seaworld008
source	in-house
source_url
tags	["checker", "fact", "productivity"]
created_at	2026-03-04
updated_at	2026-07-27
quality	5
complexity	intermediate

Fact Checker

Verify factual claims in documents and propose corrections backed by authoritative sources.

When to use

Trigger when users request:

• "Fact-check this document"
• "Verify these AI model specifications"
• "Check if this information is still accurate"
• "Update outdated data in this file"
• "Validate the claims in this section"

Workflow

Copy this checklist to track progress:

Fact-checking Progress:
- [ ] Step 1: Identify factual claims
- [ ] Step 2: Search authoritative sources
- [ ] Step 3: Compare claims against sources
- [ ] Step 4: Generate correction report
- [ ] Step 5: Apply corrections with user approval

Step 1: Identify factual claims

Scan the document for verifiable statements:

Target claim types:

• Technical specifications (context windows, pricing, features)
• Version numbers and release dates
• Statistical data and metrics
• API capabilities and limitations
• Benchmark scores and performance data

Skip subjective content:

• Opinions and recommendations
• Explanatory prose
• Tutorial instructions
• Architectural discussions

Step 2: Search authoritative sources

For each claim, search official sources:

AI models:

• Official announcement pages (anthropic.com/news, openai.com/index, blog.google)
• API documentation (platform.claude.com/docs, platform.openai.com/docs)
• Developer guides and release notes

Technical libraries:

• Official documentation sites
• GitHub repositories (releases, README)
• Package registries (npm, PyPI, crates.io)

General claims:

• Academic papers and research
• Government statistics
• Industry standards bodies

Search strategy:

• Use the exact claim subject + specification + provider
• Include current year for recent information
• Verify from multiple sources when possible

Step 3: Compare claims against sources

Create a comparison table:

Claim in Document	Source Information	Status