knowledge-sources
This is a reference for the researcher agent. Read the goal and current task, identify which categories apply, then pull sources from those sections only. Ignore irrelevant categories — don't load noise.
$ npx -y skills add vibhasdutta/loop-engineer --agent claude-codeHow it fires
How this agent gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
Context preview
The summary Claude sees to decide when to auto-load this agent.
This is a reference for the researcher agent. Read the goal and current task, identify which categories apply, then pull sources from those sections only. Ignore irrelevant categories — don't load noise.
Agent definition
knowledge-sources.mdKnowledge Sources Directory
This is a reference for the researcher agent. Read the goal and current task, identify which categories apply, then pull sources from those sections only. Ignore irrelevant categories — don't load noise.
---
How to use this
1. Read the goal and task 2. Identify 2–5 relevant categories below 3. Use the listed sources as your primary research targets for that domain 4. For any category not listed here, use general web search to find the best source
---
1. Search Engines
**General:** Google Search, Brave Search, DuckDuckGo **AI-powered:** Perplexity, Exa Search, Tavily, Phind
---
2. Open Source Code
**Repositories:** GitHub, GitLab, SourceForge **Code Search:** GitHub Code Search, Sourcegraph, grep.app **Discovery:** Awesome Lists (github.com/sindresorhus/awesome), LibHunt, AlternativeTo
---
3. Official Documentation
**Programming:** MDN Web Docs, DevDocs.io, ReadTheDocs **Cloud:** AWS Docs, Google Cloud Docs, Azure Docs, Cloudflare Docs **Frameworks:** The framework's own official docs site (React, Next.js, Vue, Django, etc.) **Languages:** The language's official docs (Python, Rust, Go, Node.js, etc.)
---
4. Package Managers & Registries
**JavaScript:** npm, pnpm registry **Python:** PyPI, Conda **Rust:** crates.io **Go:** pkg.go.dev **Java:** Maven Central **PHP:** Packagist **.NET:** NuGet **Ruby:** RubyGems **Swift:** Swift Package Index
---
5. Research Papers
**General:** Google Scholar, Semantic Scholar, OpenAlex **CS / AI / ML:** arXiv, Papers With Code, ACM Digital Library, IEEE Xplore **Science:** Nature, ScienceDirect, Springer **Medical:** PubMed, BioRxiv, MedRxiv **Economics / Social:** SSRN, RePec
---
6. AI & Machine Learning
**Models & Weights:** Hugging Face, Ollama Library, OpenRouter, Replicate **Frameworks:** LangChain, LlamaIndex, CrewAI, AutoGen, DSPy, Haystack **Datasets:** Hugging Face Datasets, Kaggle, UCI ML Repository **Benchmarks:** Papers With Code, LMSYS Chatbot Arena, HELM
---
7. MCP Servers & Agent Tools
**Discovery:** GitHub (search "mcp-server" or "awesome-mcp"), Smithery, MCP.so **Skills / Plugins:** Platform skill directories, agentskills.io **Integrations:** Official platform docs (Claude, Cursor, Gemini CLI, Antigravity, etc.)
---
8. APIs
**Discovery:** RapidAPI, APIs.guru, Public APIs List (github.com/public-apis) **Testing & Docs:** Postman API Network, Swagger Hub **GraphQL:** GraphQL Hub
---
9. Community & Discussion
**Q&A:** Stack Overflow, Stack Exchange **News / Discussion:** Hacker News, Reddit, Lobsters **Project-specific:** GitHub Discussions, GitHub Issues
---
10. Tutorials & Learning
**Blogs:** Dev.to, FreeCodeCamp, DigitalOcean Community, LogRocket Blog, CSS-Tricks **Video:** YouTube (Fireship, Traversy Media, freeCodeCamp) **Courses:** Coursera, Udemy, Khan Academy
---
11. Cybersecurity
**Vulnerabilities:** NIST NVD, MITRE CVE, Exploit-DB **Frameworks:** OWASP, MITRE ATT&CK **Threat Intel:** VirusTotal, AlienVault OTX, AbuseIPDB
---
12. System Design & Architecture
**Patterns:** High Scalability, ByteByteGo, Martin Fowler, InfoQ **Cloud Architecture:** AWS Architecture Center, Azure Architecture Center, Google Cloud Architecture
---
13. Business & Startups
**Company Data:** Crunchbase, LinkedIn, CB Insights **Startups:** Y Combinator Directory, Product Hunt, AngelList (Wellfound)
---
14. Marketing & SEO
**SEO:** Ahrefs Blog, Semrush, Moz, Backlinko **Content:** HubSpot Blog, Content Marketing Institute
---
15. Sales & Lead Generation
**B2B Data:** Apollo, ZoomInfo, Hunter.io, RocketReach **Directories:** Google Maps, LinkedIn, Yelp **B2B Marketplaces:** IndiaMART, Alibaba, TradeIndia
---
16. Jobs & Freelance
**Job Boards:** LinkedIn Jobs, Indeed, Glassdoor, Wellfound **Freelance:** Upwork, Fiverr, Toptal
---
17. Design
**UI Inspiration:** Dribbble, Mobbin, Awwwards, Behance, Godly **Icons:** Heroicons, Lucide, Font Awesome, Icons8 **Fonts:** Google Fonts, Fontshare
---
18. Images & Illustrations
**Stock Photos:** Unsplash, Pexels, Pixabay **Illustrations:** unDraw, Storyset **Icons:** Flaticon, Icons8
---
19. Video
**Platforms:** YouTube, Vimeo **Dev Channels:** Fireship, Traversy Media, freeCodeCamp YouTube
---
20. Books & Long-Form
**Free:** Project Gutenberg, Internet Archive, Open Library **Technical:** O'Reilly Learning, Google Books
---
21. News
**Tech:** TechCrunch, Hacker News, Ars Technica, The Verge **General:** Reuters, AP News, BBC, CNBC
---
22. Government & Open Data
**Datasets:** data.gov, data.europa.eu **Legal / Corporate:** SEC EDGAR, Companies House (UK), gov.uk **Patents:** USPTO, WIPO, Google Patents
---
23. Finance & Markets
**Markets:** Yahoo Finance, TradingView, Google Finance **Data APIs:** Alpha Vantage, Polygon.io, FRED **Crypto:** CoinMarketCap, CoinGecko
---
24. Legal
**Law:** Cornell Legal Information Institute (LII), Justia, FindLaw **Patents:** WIPO, USPTO, Google Patents, Espacenet
---
25. Medical & Health
**Research:** PubMed, WHO, NIH, CDC **Drugs:** DrugBank, DailyMed
---
26. Science
**Astronomy:** NASA, ESA **Biology:** NCBI, UniProt **Chemistry:** PubChem **Physics:** CERN, arXiv
---
27. Geography & Maps
**Maps:** Google Maps, OpenStreetMap, Bing Maps **Travel & Places:** Wikivoyage, Google Maps
---
28. Shopping & Commerce
**General:** Amazon, eBay **B2B / Wholesale:** Alibaba, AliExpress, IndiaMART **Regional:** Flipkart (India), Walmart
---
29. Social Media
**Professional:** LinkedIn **Discussion:** Reddit, X (Twitter), Hacker News **Communities:** Discord, Facebook Groups, Threads
---
30. Wikis & Reference
**General:** Wikipedia, Britannica, Wikidata **Programming:** ArchWiki, MDN **Domain-specific:** Relevant wiki for the field
---
31. Domain & Website Intelligence
**Technology Stack:** BuiltWith, Wappalyzer **Archive / History:** Wayback Machine (web.archive.org) **Security:** SS
Read more
Knowledge Sources Directory
This is a reference for the researcher agent. Read the goal and current task, identify which categories apply, then pull sources from those sections only. Ignore irrelevant categories — don't load noise.
---
How to use this
1. Read the goal and task 2. Identify 2–5 relevant categories below 3. Use the listed sources as your primary research targets for that domain 4. For any category not listed here, use general web search to find the best source
---
1. Search Engines
**General:** Google Search, Brave Search, DuckDuckGo **AI-powered:** Perplexity, Exa Search, Tavily, Phind
---
2. Open Source Code
**Repositories:** GitHub, GitLab, SourceForge **Code Search:** GitHub Code Search, Sourcegraph, grep.app **Discovery:** Awesome Lists (github.com/sindresorhus/awesome), LibHunt, AlternativeTo
---
3. Official Documentation
**Programming:** MDN Web Docs, DevDocs.io, ReadTheDocs **Cloud:** AWS Docs, Google Cloud Docs, Azure Docs, Cloudflare Docs **Frameworks:** The framework's own official docs site (React, Next.js, Vue, Django, etc.) **Languages:** The language's official docs (Python, Rust, Go, Node.js, etc.)
---
4. Package Managers & Registries
**JavaScript:** npm, pnpm registry **Python:** PyPI, Conda **Rust:** crates.io **Go:** pkg.go.dev **Java:** Maven Central **PHP:** Packagist **.NET:** NuGet **Ruby:** RubyGems **Swift:** Swift Package Index
---
5. Research Papers
**General:** Google Scholar, Semantic Scholar, OpenAlex **CS / AI / ML:** arXiv, Papers With Code, ACM Digital Library, IEEE Xplore **Science:** Nature, ScienceDirect, Springer **Medical:** PubMed, BioRxiv, MedRxiv **Economics / Social:** SSRN, RePec
---
6. AI & Machine Learning
**Models & Weights:** Hugging Face, Ollama Library, OpenRouter, Replicate **Frameworks:** LangChain, LlamaIndex, CrewAI, AutoGen, DSPy, Haystack **Datasets:** Hugging Face Datasets, Kaggle, UCI ML Repository **Benchmarks:** Papers With Code, LMSYS Chatbot Arena, HELM
---
7. MCP Servers & Agent Tools
**Discovery:** GitHub (search "mcp-server" or "awesome-mcp"), Smithery, MCP.so **Skills / Plugins:** Platform skill directories, agentskills.io **Integrations:** Official platform docs (Claude, Cursor, Gemini CLI, Antigravity, etc.)
---
8. APIs
**Discovery:** RapidAPI, APIs.guru, Public APIs List (github.com/public-apis) **Testing & Docs:** Postman API Network, Swagger Hub **GraphQL:** GraphQL Hub
---
9. Community & Discussion
**Q&A:** Stack Overflow, Stack Exchange **News / Discussion:** Hacker News, Reddit, Lobsters **Project-specific:** GitHub Discussions, GitHub Issues
---
10. Tutorials & Learning
**Blogs:** Dev.to, FreeCodeCamp, DigitalOcean Community, LogRocket Blog, CSS-Tricks **Video:** YouTube (Fireship, Traversy Media, freeCodeCamp) **Courses:** Coursera, Udemy, Khan Academy
---
11. Cybersecurity
**Vulnerabilities:** NIST NVD, MITRE CVE, Exploit-DB **Frameworks:** OWASP, MITRE ATT&CK **Threat Intel:** VirusTotal, AlienVault OTX, AbuseIPDB
---
12. System Design & Architecture
**Patterns:** High Scalability, ByteByteGo, Martin Fowler, InfoQ **Cloud Architecture:** AWS Architecture Center, Azure Architecture Center, Google Cloud Architecture
---
13. Business & Startups
**Company Data:** Crunchbase, LinkedIn, CB Insights **Startups:** Y Combinator Directory, Product Hunt, AngelList (Wellfound)
---
14. Marketing & SEO
**SEO:** Ahrefs Blog, Semrush, Moz, Backlinko **Content:** HubSpot Blog, Content Marketing Institute
---
15. Sales & Lead Generation
**B2B Data:** Apollo, ZoomInfo, Hunter.io, RocketReach **Directories:** Google Maps, LinkedIn, Yelp **B2B Marketplaces:** IndiaMART, Alibaba, TradeIndia
---
16. Jobs & Freelance
**Job Boards:** LinkedIn Jobs, Indeed, Glassdoor, Wellfound **Freelance:** Upwork, Fiverr, Toptal
---
17. Design
**UI Inspiration:** Dribbble, Mobbin, Awwwards, Behance, Godly **Icons:** Heroicons, Lucide, Font Awesome, Icons8 **Fonts:** Google Fonts, Fontshare
---
18. Images & Illustrations
**Stock Photos:** Unsplash, Pexels, Pixabay **Illustrations:** unDraw, Storyset **Icons:** Flaticon, Icons8
---
19. Video
**Platforms:** YouTube, Vimeo **Dev Channels:** Fireship, Traversy Media, freeCodeCamp YouTube
---
20. Books & Long-Form
**Free:** Project Gutenberg, Internet Archive, Open Library **Technical:** O'Reilly Learning, Google Books
---
21. News
**Tech:** TechCrunch, Hacker News, Ars Technica, The Verge **General:** Reuters, AP News, BBC, CNBC
---
22. Government & Open Data
**Datasets:** data.gov, data.europa.eu **Legal / Corporate:** SEC EDGAR, Companies House (UK), gov.uk **Patents:** USPTO, WIPO, Google Patents
---
23. Finance & Markets
**Markets:** Yahoo Finance, TradingView, Google Finance **Data APIs:** Alpha Vantage, Polygon.io, FRED **Crypto:** CoinMarketCap, CoinGecko
---
24. Legal
**Law:** Cornell Legal Information Institute (LII), Justia, FindLaw **Patents:** WIPO, USPTO, Google Patents, Espacenet
---
25. Medical & Health
**Research:** PubMed, WHO, NIH, CDC **Drugs:** DrugBank, DailyMed
---
26. Science
**Astronomy:** NASA, ESA **Biology:** NCBI, UniProt **Chemistry:** PubChem **Physics:** CERN, arXiv
---
27. Geography & Maps
**Maps:** Google Maps, OpenStreetMap, Bing Maps **Travel & Places:** Wikivoyage, Google Maps
---
28. Shopping & Commerce
**General:** Amazon, eBay **B2B / Wholesale:** Alibaba, AliExpress, IndiaMART **Regional:** Flipkart (India), Walmart
---
29. Social Media
**Professional:** LinkedIn **Discussion:** Reddit, X (Twitter), Hacker News **Communities:** Discord, Facebook Groups, Threads
---
30. Wikis & Reference
**General:** Wikipedia, Britannica, Wikidata **Programming:** ArchWiki, MDN **Domain-specific:** Relevant wiki for the field
---
31. Domain & Website Intelligence
**Technology Stack:** BuiltWith, Wappalyzer **Archive / History:** Wayback Machine (web.archive.org) **Security:** SS
Loop engineering skill for AI — scaffold a 8-agent team that discovers, implements, verifies, and iterates until your goal is met.
Repo: vibhasdutta/loop-engineer
Other agents on loop-engineer.
- agent-factory
Extends the core team with specialists when the goal benefits from domain expertise beyond what the generic agents provide. Runs once after the planner. Never executes the goal itself.
Open agent - auditor
Catches problems the verifier wouldn't — things that work but aren't done the right way. Uses researcher-defined quality standards to judge output. Non-blocking unless critical.
Open agent - executor
Completes exactly one task and moves the loop forward. Derives execution method from the goal and researcher findings. Output goes to the project directory, never inside loop-stack. Never marks tasks complete.
Open agent - 01-search-engines
- Google Search - Bing Search - Brave Search - DuckDuckGo - Kagi - Mojeek - Yahoo Search - Yandex - SearXNG - Startpage
Open agent - 02-open-source-code
- GitHub - GitLab - Bitbucket - SourceForge - Codeberg
Open agent - 03-official-documentation
- MDN - DevDocs - ReadTheDocs - Dash Docs - Zeal Docs
Open agent