Topic · Research & Science
Best fact-checking and source verification skills for Claude Code, Codex and other agents.
- skills
- 174
- official
- 6
Fact-checking and source verification skills, ranked
Ranked by score. Sort bymost stars,trending,newest,recently updated
| # | Skill | Repository | Stars | Used in | Tokens | Auto-check | Licence | Updated |
|---|---|---|---|---|---|---|---|---|
| 1 | Searches the web through the Tavily API with LLM-friendly output: clean structured results, optional AI-written answers, domain filters, news mode, images and raw content. | allenpeng0705/ | 3.1k | 4 repos | ~2.5k | Automated safety check: Notes | No licence | 6 days ago |
| 2 | Verifies the technical accuracy of JavaScript concept pages by checking code examples, MDN and ECMAScript claims and external links through a five-phase method. | leonardomso/ | 67k | 1 repo | ~5k | Automated safety check: Pass | MIT | 26 days ago |
| 3 | Runs web-grounded searches through Perplexity's Sonar models over OpenRouter for current events, recent literature and cited facts beyond the model's training cutoff. | davila7/ | 32k | 12 repos | ~3.5k | Automated safety check: Notes | MIT | today |
| 4 | Reference guidance for checking every citation in academic writing against canonical sources such as DOI, arXiv, CrossRef and Semantic Scholar, to catch fake or wrong references. | Galaxy-Dawn/ | 5.7k | 3 repos | ~1.9k | Automated safety check: Pass | MIT | 14 days ago |
| 5 | 三层审查模型,逐段逐句验证文章真伪、证据链与逻辑结构。Use when the user asks to fact-check, verify, audit, or evaluate the credibility of an article, essay, report, opinion piece, social-media post, or any written claim —… | digoal/ | 8.6k | — | ~939 | Automated safety check: Pass | GPL-2.0 | 9 days ago |
| 6 | Runs a 13-agent pipeline for rigorous academic research, from forming the question through systematic search, synthesis, bias checks and an APA 7.0 report. | Imbad0202/ | 51k | — | ~13k | Automated safety check: Pass | Unknown | 4 days ago |
| 7 | A skill your agent uses when the user wants to fact-check an article or verify factual claims in a document. | MigoXLab/ | 757 | — | ~741 | Automated safety check: Notes | Apache-2.0 | 9 days ago |
| 8 | Use only when the user explicitly invokes $audit-onboarding-proposal. | hoangnb24/ | 1.2k | — | ~4k | Automated safety check: Pass | MIT | 3 days ago |
| 9 | Researches an unfamiliar topic and delivers a verified resource guide and a staged, timed learning roadmap as matching Markdown and HTML files. | Liuziyu77/ | 195 | — | ~3.6k | Automated safety check: Pass | Apache-2.0 | 1 mo ago |
| 10 | 10.Dingo Verify A skill your agent uses when the user wants to fact-check an article or verify factual claims in a document. | MigoXLab/ | 757 | — | ~833 | Automated safety check: Pass | Apache-2.0 | 9 days ago |
| 11 | A skill your agent uses to verify CLAIM-LEVEL grounding of a documentation page (or set of pages) against the source code. | microsoft/ | 4k | — | ~1.9k | Automated safety check: Pass | MIT | yesterday |
| 12 | Fetches the transcript of a YouTube video through TranscriptAPI.com so the agent can summarize, quote, translate or fact-check what was said. | ZeroPointRepo/ | 1k | 1 repo | ~1.1k | Automated safety check: Pass | MIT | today |
| 13 | Review and validate claims using counter-hypothesis testing. | bradygaster/ | 3.3k | — | ~503 | Automated safety check: Pass | MIT | yesterday |
| 14 | Verifies that every reference in a manuscript is real, correctly identified and actually supports its claim, and produces a citation registry for typesetting. | Light0305/ | 640 | — | ~3.4k | Automated safety check: Pass | MIT | 3 mo ago |
| 15 | 15.Xhs Imagen Create complete Xiaohongshu image-and-text posts from a topic, article, document, or rough idea, including research, fact checking, post copy, pagination, storyboards, a 3:4 cover, 9:16 content… | NimaChu/ | 120 | — | ~2.3k | Automated safety check: Pass | MIT | 2 mo ago |
| 16 | 16.Paper Radar Scrape AI papers published by 28 big tech companies and AI labs in a given date window, with institutional attribution (lead vs. | tigerless-labs/ | 217 | — | ~2.4k | Automated safety check: Pass | Unknown | 1 mo ago |
| 17 | Argument shapes for the 5 built-in workflow patterns — deep-research, adversarial-review, code-review, multi-perspective, codebase-audit — runnable via the workflow tool's name input, without… | QuintinShaw/ | 554 | — | ~827 | Automated safety check: Pass | MIT | yesterday |
| 18 | 18.AnySearch Gives your agent a real-time search service for web queries, domain-specific lookups, parallel batch searches and full-page URL extraction. | jxxghp/ | 12k | 1 repo | ~2.7k | Automated safety check: Notes | GPL-3.0 | today |
| 19 | Attaches a numbered, URL-backed citation to every outside fact in an answer or document, rejecting quotes that aren't real. | NousResearch/ | 252k | — | ~3.1k | Automated safety check: Pass | MIT | today |
| 20 | Apply Buddhist epistemic and decision-making principles as practical work disciplines to improve reasoning quality, anti-hallucination, debugging discipline, and steadiness under pressure. | nai0om/ | 294 | — | ~2.4k | Automated safety check: Pass | MIT | 5 mo ago |
| 21 | Plans and drafts an eight-part, roughly 120k-word investigative series on one company, built around a strict fact-check pass rather than fast drafting. | HKUDS/ | 35k | — | ~2.4k | Automated safety check: Pass | MIT | yesterday |
| 22 | Runs cross-source web research to verify whether an online claim is true, distinguishing confirmed facts from rumor, marketing claims or stale information. | h4444433333/ | 123 | — | ~3.3k | Automated safety check: Pass | MIT | 1 mo ago |
| 23 | A skill your agent uses when the user asks for discovery-scale research that informs a decision: brainstorming a project or feature, choosing a technology, or requests like "research X", "what's the… | DanMcInerney/ | 626 | — | ~2.3k | Automated safety check: Pass | MIT | 24 days ago |
| 24 | 24.Fact Check Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap… | akitaonrails/ | 211 | — | ~2.7k | Automated safety check: Pass | No licence | 14 days ago |
| 25 | Researches what people are saying about a topic over a recent window across X, Reddit, YouTube and the public web, reporting each source's status with links. | imraywang/ | 160 | — | ~2.1k | Automated safety check: Pass | Unknown | 14 days ago |
| 26 | 26.Review Docs Audit a game environment's README.md and AGENTS.md against its engine implementation. | Kaggle/ | 454 | — | ~2.7k | Automated safety check: Pass | Apache-2.0 | today |
| 27 | Count how many independent origins are behind news coverage of a claim, instead of counting URLs. | SerhiiKorniienko/ | 153 | — | ~1.5k | Automated safety check: Pass | MIT | 8 days ago |
| 28 | 28.Agent Search Use Agent Search MCP for free-first English and Chinese web search with compact evidence and minimal tool calls. | lennney/ | 110 | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | 16 days ago |
| 29 | A research rule set for pulling company financials from prioritized sources by market and cross-checking every key figure against two independent sources. | xbtlin/ | 17k | — | ~1.4k | Automated safety check: Pass | MIT | yesterday |
| 30 | Step-argument skill that formalizes writing an Aspire "What's new in N.N" release-notes page (src/frontend/src/content/docs/whats-new/aspire-N-N.mdx) as a repeatable lifecycle. | microsoft/ | 196 | — | ~1.9k | Automated safety check: Pass | MIT | today |
| 31 | Unified web search, page fetching and evidence checking across hundreds of sources, with result verification, a research-dossier mode and vertical search engines. | taxueseek/ | 184 | — | ~1.2k | Automated safety check: Pass | MIT | yesterday |
| 32 | Runs a branch-parallel research pipeline with declared sufficiency per subquestion, deterministic stop and citation checks, and a separate model for verification. | AnkitClassicVision/ | 147 | — | ~588 | Automated safety check: Pass | MIT | 3 mo ago |
| 33 | Cross-checks each academic reference against several sources field by field, flags conflicts such as year, DOI, author order and page errors, and outputs a structured report. | Yuan1z0825/ | 46k | 2 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 | today |
| 34 | Builds courses on current or externally checkable topics by researching live sources first, keeping a claim-to-source ledger and grounding every page in what was fetched. | THU-MAIC/ | 40k | — | ~2k | Automated safety check: Pass | MIT | today |
| 35 | 35.Githits Code A skill your agent uses whenever invoking the GitHits CLI for public OSS source, documentation, or example evidence, including code search/grep, file navigation, source verification, docs lookup, or… | githits-com/ | 114 | — | ~2.6k | Automated safety check: Pass | Apache-2.0 | yesterday |
| 36 | Fetch and normalize any content source into clean text with metadata — YouTube video transcripts, TikTok captions, web articles, PDFs, tweets/X posts, local files. | SerhiiKorniienko/ | 153 | — | ~976 | Automated safety check: Pass | MIT | 8 days ago |
| 37 | Bright Data MCP handles ALL web data operations. An agent skill from brightdata/skills. | brightdata/ | 264 | 1 repo | ~3.7k | Automated safety check: Pass | MIT | yesterday |
| 38 | 38.Research A skill your agent uses for web searches and current information lookups, finding sources, fact-checking, researching questions, comparing sources, or summarising web pages. | zhongkaifu/ | 553 | — | ~2.3k | Automated safety check: Warn | BSD-3-Clause | today |
| 39 | Plan and execute multi-step research, surveys, feasibility studies, and evidence-heavy analyses with adaptive planning, source verification, critic review, and cross-task learning. | microsoft/ | 135 | — | ~2.7k | Automated safety check: Pass | MIT | 5 days ago |
| 40 | Breaks AI-generated text into checkable claims, verifies them against independent sources and labels each one, with an optional exercise for learners. | iflytek/ | 5.2k | — | ~1.2k | Automated safety check: Pass | CC-BY-SA-4.0 | 6 days ago |
| 41 | 41.Research A skill your agent uses when the user asks you to research, compare, fact-check or find current information, and the answer should come with sources. | katipally/ | 333 | — | ~827 | Automated safety check: Pass | Apache-2.0 | 2 days ago |
| 42 | Use Entroly for content-blind agent-history audits, explicit baseline/optimized trials, recoverable command or browser evidence, response contracts, and token-efficiency claim verification. | juyterman1000/ | 472 | — | ~528 | Automated safety check: Pass | Apache-2.0 | today |
| 43 | Reference knowledge for AI deep research: a five-phase process, strategies by question type, CRAAP source scoring, cross-referencing, synthesis and citation formats. | RightNow-AI/ | 18k | — | ~2.6k | Automated safety check: Pass | Apache-2.0 | 3 mo ago |
| 44 | A skill your agent uses when drafting, rewriting, or repurposing short-form X content, including single posts, quote posts, replies, threads, launches, and personal stories, with source fidelity and… | asimons81/ | 126 | — | ~2.6k | Automated safety check: Pass | Apache-2.0 | 28 days ago |
| 45 | Assess and promote corpus slices toward citation readiness. An agent skill from scholay/skills. | scholay/ | 141 | — | ~1.1k | Automated safety check: Pass | MIT | 3 mo ago |
| 46 | Verify claims in pitch decks and founder statements using multiple independent sources. | Abilityai/ | 626 | — | ~635 | Automated safety check: Pass | Apache-2.0 | today |
| 47 | Runs multi-step research with a loop of search, compress, reflect and synthesize, scaling effort from a quick sourced answer to an exhaustive cited report. | madebyaris/ | 126 | — | ~2.9k | Automated safety check: Pass | MIT | 3 mo ago |
| 48 | 48.Share Turn a BS report (or any analysis result) into ready-to-paste posts for X/Twitter, LinkedIn, Facebook, Reddit, Hacker News, or a newsletter issue — plus a branded image carousel (PNGs + PDF) for… | SerhiiKorniienko/ | 153 | — | ~857 | Automated safety check: Pass | MIT | 8 days ago |
Questions, answered from the data.
What is the best fact-checking and source verification skill?
Tavily Web Search from allenpeng0705/EnvoyMesh ranks first of the 174 fact-checking and source verification skills listed here, with the highest score: its repository has 3.1k GitHub stars, 4 other GitHub owners carry a copy, its SKILL.md loads about 2.5k tokens and it has informational notes only in the automated safety check. Next come JavaScript Concept Fact Checker and Perplexity Web Search.
Which fact-checking and source verification skills are official?
6 of the 174 fact-checking and source verification skills are official, published by the vendor's own GitHub organization: Docs Grounding Verifier, Whatsnew, Research Workflow, .NET API Diff Validation, Triage Issue Reports and 1 more.
How are these skills ranked?
By Skill Navigator score, which combines the GitHub stars of the skill's repository (shared across that repo's skills and discounted for large collections), how many other GitHub owners carry a copy of the skill, and automated SKILL.md quality checks, minus penalties for safety-check warnings and for each further skill from the same repository. Skills that fail the safety check are not listed.
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