fact-check
Skill8 starsChanged 5 months agoMITView on GitHub
Extracts factual claims from selected text or a page and checks each against the visible context and available sources, flagging what is supported, weakened, contradicted, or still unverified. Use when the user says "fact check this", "verify", "is this true", "check the sources", or asks about a page's accuracy, credibility, or possible misinformation.
38 other projects use a version of this.
Adopted by
Most recently taken up by
- WilliamEbong/CourseForgetheir own version, first seen Nov 8, 2026
- AmethystLuna/embedded-workbenchtheir own version, first seen Nov 5, 2026
- aktsmm/Agent-Skillstheir own version, first seen Nov 1, 2026
- kfangw/research-opstheir own version, first seen Oct 25, 2026
- mingxinbi112-source/OBI-xiao-skilltheir own version, first seen Oct 20, 2026
- soilSpoon/skillstheir own version, first seen Oct 20, 2026
Used with
Projects with it also use deep-research, seo and 2 more.
Other files people use alongside this one.
Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
NVIDIASkilldeep-research
Queue deep, multi-step research and analysis tasks to the DeepAgents worker. Supports execution depth presets, request-specific rubrics, SubAgent delegation, and RubricMiddleware cross-validation.
Also in 4 projects that use this
nilssonrSkillseo
Full SEO workflow for auditing pages and creating SEO-optimized content. Provides checklists with educational explanations aligned with Google Search Central documentation.
Also in 3 projects that use this
NVIDIASkillresearch
Before designing a feature, research how comparable libraries solve the problem, check best practices, known pitfalls, and upstream changes. Use when starting a new feature, investigating an unfamiliar area, or the user asks to research something.
Also in 3 projects that use this
BlockSkillfrontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.
Also in 3 projects that use this
Other versions38 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 38
- leonardomso/33-js-concepts★ 67ksame name
- THU-MAIC/OpenMAIC★ 43ksame name
- garrytan/gbrain★ 32ksame name
- elvisun/newsjack★ 1.7ksame name
- srid/emanote★ 963same name
- akitaonrails/my-skills★ 283same name
- Jamie-BitFlight/claude_skills★ 67same name
- jezweb/vite-flare-starter★ 49same name
- namedtoaster/The-Last-Mile★ 39same name
- AmethystLuna/embedded-workbench★ 32same name
28 more not listed
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
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The file
We split this skill into the rules it gives an agent
2 rules. 0 are common, 2 are distinctive, and 0 are very specific to this project.
0
Common
Most of the 31 edited versions we read keep these.
2
Distinctive
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 16
Check each claim against the visible context, its cited sources, and any web search or MCP/tool results available.
- Distinctive: line 18
When support is incomplete, say what is missing and what evidence would change the verdict.
“Common” is measured: kept by at least 6 in 10 of the 31 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Fact Check
Pull the factual claims out of the page and check each against the visible context and available sources. Never invent facts, quotes, numbers, or sources, present a guess as established, or overclaim what the evidence actually supports.
- Extract concrete, checkable claims from the selected or visible content. Skip pure opinions unless they imply facts, and watch for cited sources, links, dates, and numbers that a claim should trace to.
- Check each claim against the visible context, its cited sources, and any web search or MCP/tool results available. Prefer primary and official sources when a claim affects money, health, legal, safety, or reputation decisions.
- Classify each claim: supported, weakly supported, unsupported, contradicted, or needs more evidence. If a claim is ambiguous (a date that conflates two events, a word like "all" or "always" that may overstate), split it or mark it weakly supported rather than forcing a clean verdict.
- When support is incomplete, say what is missing and what evidence would change the verdict.
Report each claim with its Status, Evidence used, Reasoning, and what to verify next. Preserve exact names, numbers, links, dates, and currencies, and don't let a single low-quality source settle a claim on its own.
Example
Page text: "The EU AI Act took effect in 2024 and bans all facial recognition."
Claim: The EU AI Act took effect in 2024. Status: Weakly supported Evidence used: The page shows a 2024 date but blurs the entry into force date with the later phased application dates. Reasoning: The Act entered into force in 2024, yet most obligations apply later, so "took effect" is only partly accurate. Verify next: The official EU legislation timeline for when each obligation starts to apply.
Claim: The EU AI Act bans all facial recognition. Status: Contradicted Evidence used: No source on the page supports a blanket ban; the linked summary lists narrow exceptions. Reasoning: The Act restricts specific real-time biometric uses rather than banning all facial recognition, so "all" overstates it. Verify next: The exact prohibited and high-risk categories in the primary text.
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Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
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People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
- It worked
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Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
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