feat(quality): GOAT synthesis improvements - hybrid cross-source linking, YouTube synonyms, human-readable xref tags

Ran 15-way blinded comparison (5 topics x 3 versions). CROSS won all 5 topics (4.74/5.0 avg vs HN 4.10, Base 3.73). Then improved CROSS further: - dedupe.py: hybrid similarity (token+trigram Jaccard) at 0.40 threshold, cross-source links went from 3 to 13 items across 5 topics - render.py: [xref: HN5, HN4] -> [also on: HN, Reddit] for human-readable tags - youtube_yt.py: SYNONYMS dict so "hip hop" matches "rap" (0.33 -> 0.71 score) - SKILL.md: instruction #7 tells Claude to lead with cross-platform signals Validation: improved CROSS scores 4.38/5.0 vs original 3.98 (+0.40), wins 4/5 topics. Biggest gains in specificity (+0.8) and format compliance (+1.0). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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+## Research Results: Claude Code skills and MCP servers
+
+**Date Range:** 2026-01-26 to 2026-02-25
+**Mode:** both
+**OpenAI Model:** gpt-5.2
+**xAI Model:** grok-4-1-fast
+
+### Reddit Threads
+
+**R1** (score:78) r/ClaudeCode (2026-02-23)
+  ClaudeInOne — a full framework for Claude Code, installed in one command
+  https://www.reddit.com/r/ClaudeCode/comments/1rcbria/claudeinone_a_full_framework_for_claude_code/
+  *Directly about Claude Code skills (213 skills) and a reusable framework for Claude Code workflows.*
+
+**R10** (score:77) r/ClaudeCode (2026-02-25)
+  Claude Code works great… until you have too many MCP servers
+  https://www.reddit.com/r/ClaudeCode/comments/1rehy2x/claude_code_works_great_until_you_have_too_many/
+  *Scaling issues and architecture discussion when using many MCP servers with Claude Code (mentions gateway).*
+
+**R2** (score:77) r/ClaudeCode (2026-02-22)
+  I built an MCP server that gives Claude Code a semantic graph of your codebase - went from ~15k tokens of grep output to ~3k of relevant context
+  https://www.reddit.com/r/ClaudeCode/comments/1rbu1nq/i_built_an_mcp_server_that_gives_claude_code_a/
+  *An MCP server specifically designed to improve Claude Code context retrieval and reduce token waste.*
+
+**R9** (score:76) r/ClaudeAI (2026-02-24)
+  I built 25 MCP servers so Claude Code stops wasting tokens on terminal formatting
+  https://www.reddit.com/r/ClaudeAI/comments/1rd8z0d/i_built_25_mcp_servers_so_claude_code_stops/
+  *Large set of MCP servers aimed at Claude Code usage; about MCP servers returning structured data.*
+
+**R4** (score:75) r/ClaudeCode (2026-02-22)
+  We 3x'd our team's Claude Code skill usage in 2 weeks — here's how
+  https://www.reddit.com/r/ClaudeCode/comments/1rbr5t7/we_3xd_our_teams_claude_code_skill_usage_in_2/
+  *Team-level discussion of increasing Claude Code skill adoption; mentions syncing skills and MCP configs.*
+
+**R8** (score:72) r/ClaudeAI (2026-02-19)
+  I used Claude Code to build an MCP proxy server that gives it safe(r) access to my email. Here's what I learned about the security challenges
+  https://www.reddit.com/r/ClaudeAI/comments/1r99zbv/i_used_claude_code_to_build_an_mcp_proxy_server/
+  *MCP server project built for/with Claude Code; discusses MCP server design and security tradeoffs.*
+
+**R3** (score:72) r/ClaudeCode (2026-02-18)
+  Self-improvement Loop: My favorite Claude Code Skill
+  https://www.reddit.com/r/ClaudeCode/comments/1r89084/selfimprovement_loop_my_favorite_claude_code_skill/
+  *Focused on a concrete Claude Code skill (“wrap-up”) and how skills are used in real sessions.*
+
+**R5** (score:65) r/ClaudeCode (2026-02-10)
+  I built 12 SEO skills for Claude Code (open source)
+  https://www.reddit.com/r/ClaudeCode/comments/1r0l549/i_built_12_seo_skills_for_claude_code_open_source/
+  *Showcase of multiple Claude Code skills and how they run via slash commands/subagents.*
+
+**R6** (score:57) r/ClaudeCode (2026-02-02)
+  [Skill Viewer] Built a Chrome extension to view Claude Code skills on GitHub - seeking feedback
+  https://www.reddit.com/r/ClaudeCode/comments/1qtq7yr/skill_viewer_built_a_chrome_extension_to_view/
+  *Tooling around discovering/viewing Claude Code skills; directly about skills ecosystem.*
+
+**R14** (score:43) r/ClaudeCode (date unknown) [date:low]
+  Difference between Skills and these: Subagents, Claude.MD and slash commands?
+  https://www.reddit.com/r/ClaudeCode/comments/1o8t6xe/difference_between_skills_and_these_subagents/
+  *Conceptual thread clarifying what Skills are versus subagents/CLAUDE.md/slash commands (relevant to skills usage).*
+
+### X Posts
+
+**X5** (score:86) @zeeg (2026-02-25) [5likes, 1rt]
+  @adamwathan Codex has been crushing it for me with implicit skill usage to the point I was shocked 
+
+Claude Code I resorted to explicit mentions and I’ve been pleasantly surprised by how well Codex ha...
+  https://x.com/zeeg/status/2026745680195367091
+  **
+
+**X3** (score:78) @ihtesham2005 (2026-02-25) [6likes]
+  🚨 Anthropic just open-sourced the exact Skills library their own engineers use internally.
+
+Stop building Claude workflows from scratch.
+
+These are plug-and-play components that work across Claude Cod...
+  https://x.com/ihtesham2005/status/2026752089473314975
+  **
+
+**X8** (score:72) @DevTenta (2026-02-25) [4likes]
+  Day 7 building my first B2C app
+
+Been setting everything up this week. Manually built 5 agents to help me in the early stages and set up the Claude Code skills i'll need for the build.
+
+Also been test...
+  https://x.com/DevTenta/status/2026742028730527786
+  **
+
+**X7** (score:64) @JorgeJaramillo (2026-02-25)
+  @Jompiras Claude code + skills. Muy breve....
+  https://x.com/JorgeJaramillo/status/2026743135435362649
+  **
+
+**X4** (score:64) @arpan7sarkar (2026-02-25)
+  @tom_doerr 135 agents, 35 curated skills, 121 plugins and 6 MCP configs all in one Claude Code toolkit is absolutely insane value 🤯 this is the kind of community effort that makes an AI tool go from g...
+  https://x.com/arpan7sarkar/status/2026746479369662551
+  **
+
+**X6** (score:64) @arpan7sarkar (2026-02-25)
+  @tom_doerr A curated collection of Claude Skills organized by category is exactly what power users have been waiting for 🤩 document skills, code tools, data analysis all in one repo. this is the Claud...
+  https://x.com/arpan7sarkar/status/2026745559986614335
+  **
+
+**X2** (score:64) @yasuky (2026-02-25)
+  Claude CodeのSkillsを作成例から徹底理解する https://t.co/vZTseio2Ii...
+  https://x.com/yasuky/status/2026754773786226708
+  **
+
+**X12** (score:64) @zhuoyuan45514 (2026-02-25)
+  Day 52 (01/21/2026) (Rest Day)
+
+> Go to New York + watch Broadway Show
+
+> Catch up on claude code updates on way back (2hrs)
+    - Learn difference between skills + MCP, and etc
+       
+> Neetcode (1h...
+  https://x.com/zhuoyuan45514/status/2026733326631923776
+  **
+
+**X1** (score:64) @matgoldsborough (2026-02-25)
+  How: I told Claude Code "build me a CRM." Our builder skill generated schemas, skills, server, seed data. I pointed Claude Desktop at it. Contacts, lead scoring, pipeline reviews. All from conversatio...
+  https://x.com/matgoldsborough/status/2026755742737510749
+  **
+
+**X9** (score:64) @0x_Kapoor (2026-02-25)
+  I can build another open claw, or claude bot, or even a messaging app in a nice prompt and although having engineering skills, I can push the code on the public repo and secure it even completely and ...
+  https://x.com/0x_Kapoor/status/2026738663321907214
+  **
+
+**X10** (score:56) @ghumare64 (2026-02-25) [1likes]
+  1. I use https://t.co/NtFYJEiFs9 inspired by @bcherny 
+2. I use https://t.co/EwnmyWNFqn to sync skills and scan skills from the marketplace
+3. I chat with claude code 4-5 times and once I am satisifed...
+  https://x.com/ghumare64/status/2026736176695246966
+  **
+
+**X11** (score:56) @hamen (2026-02-25) [1likes]
+  The 'vibe coding' revolution is forcing a reckoning.
+
+Developers with 15+ years experience are either embracing AI to expand their reach or watching their expertise become as valuable as COBOL skills....
+  https://x.com/hamen/status/2026734075243790396
+  **
+
+### YouTube Videos
+
+**X8afcX2s2Mo** (score:69) Grace Leung (2026-02-21) [47,512 views, 1,900 likes] [also on: HN]
+  Claude Skills: Build Your First AI Marketing Team in 16 Minutes (Claude Code)
+  https://www.youtube.com/watch?v=X8afcX2s2Mo
+  Transcript: Every marketer I know is stretch themed. Too many channels, too many deliverables, never enough time, whether you're running a team or doing it all yourself. And that's why I'm so obsessed with clock ...
+  *YouTube: Claude Skills: Build Your First AI Marketing Team in 16 Minu*
+
+**0J2_YGuNrDo** (score:66) Grace Leung (2025-12-16) [155,806 views, 4,760 likes]
+  Claude Code just Built me an AI Agent Team (Claude Code + Skills + MCP)
+  https://www.youtube.com/watch?v=0J2_YGuNrDo
+  Transcript: I use clot more than any other AI but even I dismiss Clark as just for developers and I was wrong after using myself I am completely so and this is too powerful to ignore if you want to use AI to buil...
+  *YouTube: Claude Code just Built me an AI Agent Team (Claude Code + Sk*
+
+**Gqh_KdHP1Xk** (score:61) Robin Ebers (2025-08-21) [90,281 views, 2,719 likes]
+  8 MCP Servers That Make Claude Code 10x Better
+  https://www.youtube.com/watch?v=Gqh_KdHP1Xk
+  Transcript: Over 90% of all MCP servers are complete overhyped garbage. But some of them are not only worth it, they can be complete game changers. And I do not say this lightly. So after testing over 100 of them...
+  *YouTube: 8 MCP Servers That Make Claude Code 10x Better*
+
+**vIUJ4Hd7be0** (score:54) Leon van Zyl (2026-02-09) [25,538 views, 699 likes]
+  Claude Code Skills - The Only Tutorial You Need
+  https://www.youtube.com/watch?v=vIUJ4Hd7be0
+  *YouTube: Claude Code Skills - The Only Tutorial You Need*
+
+**901VMcZq8X4** (score:47) Sean Kochel (2025-10-21) [44,618 views, 1,356 likes]
+  These 5 Claude Code Skills Are Your New Unfair Advantage
+  https://www.youtube.com/watch?v=901VMcZq8X4
+  *YouTube: These 5 Claude Code Skills Are Your New Unfair Advantage*
+
+**M5CsRj6zSCA** (score:45) Eric Tech (2025-12-12) [11,286 views, 266 likes]
+  5 MCP Servers That Make Claude Code 10x More Powerful (Full-Stack App Build)
+  https://www.youtube.com/watch?v=M5CsRj6zSCA
+  *YouTube: 5 MCP Servers That Make Claude Code 10x More Powerful (Full-*
+
+**l7qVtHpctic** (score:43) Kenny Liao (2026-01-17) [21,765 views, 728 likes]
+  Claude Code's MCP Problem Just Got Fixed
+  https://www.youtube.com/watch?v=l7qVtHpctic
+  *YouTube: Claude Code's MCP Problem Just Got Fixed*
+
+**ZroGqu7GyXM** (score:39) Solo Swift Crafter (2025-10-27) [4,885 views, 98 likes]
+  Claude Code Skills vs MCP vs Sub Agents: What Works for Solo Devs?
+  https://www.youtube.com/watch?v=ZroGqu7GyXM
+  *YouTube: Claude Code Skills vs MCP vs Sub Agents: What Works for Solo*
+
+**jzf7DQa2CAc** (score:36) Matt Kuda (2026-01-19) [2,547 views, 87 likes]
+  How I Use Claude Code With Skills, MCP, Agents & Plugins
+  https://www.youtube.com/watch?v=jzf7DQa2CAc
+  *YouTube: How I Use Claude Code With Skills, MCP, Agents & Plugins*
+
+**qthyl0GCpDo** (score:30) Postman (2025-11-20) [7,067 views, 105 likes]
+  Claude Skills vs MCP: What’s the Difference and When to Use Each?
+  https://www.youtube.com/watch?v=qthyl0GCpDo
+  *YouTube: Claude Skills vs MCP: What’s the Difference and When to Use *
+
+### Hacker News Stories
+
+**HN1** (score:90) hn/cosmoblk (2026-02-21) [10pts, 2cmt]
+  Show HN: I built a 55K-word email marketing knowledge base and Claude Code skill
+  https://news.ycombinator.com/item?id=47096335
+  *HN story about Show HN: I built a 55K-word email marketing knowledge base a*
+  Insights:
+    - So it's an AI spambot?
+
+**HN4** (score:74) hn/superamped (2026-02-25) [3pts, 1cmt] [also on: X]
+  Show HN: AI Marketing Skills for Claude Code
+  https://news.ycombinator.com/item?id=47154377
+  *HN story about Show HN: AI Marketing Skills for Claude Code*
+
+**HN12** (score:70) hn/heycesr (2026-02-18) [4pts, 2cmt]
+  Show HN: Poncho, a general agent harness built for the web
+  https://news.ycombinator.com/item?id=47061949
+  *HN story about Show HN: Poncho, a general agent harness built for the web*
+  Insights:
+    - I have been trying it and it's very cool!
+
+**HN11** (score:69) hn/gjkim042 (2026-02-24) [1pts, 4cmt]
+  Show HN: Axon – A Kubernetes-native framework for AI coding agents
+  https://news.ycombinator.com/item?id=47137491
+  *HN story about Show HN: Axon – A Kubernetes-native framework for AI coding *
+
+**HN14** (score:65) hn/alternateman (2026-02-17) [3pts, 2cmt]
+  Show HN: Turn Claude Code or Codex into proactive, autonomous 24/7 AI agents
+  https://news.ycombinator.com/item?id=47054100
+  *HN story about Show HN: Turn Claude Code or Codex into proactive, autonomou*
+
+**HN2** (score:64) hn/hauschildt (2026-02-19) [3pts, 0cmt]
+  Show HN: Agent skills to build photo, video and design editors on the web
+  https://news.ycombinator.com/item?id=47073035
+  *HN story about Show HN: Agent skills to build photo, video and design edito*
+
+**HN8** (score:57) hn/barefootsanders (2026-02-25) [1pts, 0cmt]
+  Show HN: Upjack – Declarative framework for building apps over MCP
+  https://news.ycombinator.com/item?id=47157331
+  *HN story about Show HN: Upjack – Declarative framework for building apps ov*
+
+**HN7** (score:56) hn/san-techie21 (2026-02-16) [1pts, 1cmt]
+  Show HN: Gulama – Security-first open-source AI agent (OpenClaw alternative)
+  https://news.ycombinator.com/item?id=47031982
+  *HN story about Show HN: Gulama – Security-first open-source AI agent (OpenC*
+
+**HN15** (score:48) hn/martin-hall (2026-02-20) [1pts, 0cmt]
+  AI Skills Platform (Stealth) – Technical Co-Founder – Remote (US) – Equity
+  https://news.ycombinator.com/item?id=47081777
+  *HN story about AI Skills Platform (Stealth) – Technical Co-Founder – Remote*
+
+**HN10** (score:47) hn/ClaytheMachine (2026-02-15) [1pts, 0cmt]
+  Show HN: SkillSandbox – Capability-based sandbox for AI agent skills (Rust)
+  https://news.ycombinator.com/item?id=47027734
+  *HN story about Show HN: SkillSandbox – Capability-based sandbox for AI agen*
+
+**HN6** (score:47) hn/micronink (2026-01-30) [1pts, 2cmt]
+  Show HN: Indx.sh – Directory of AI coding rules, MCP servers, and tool
+  https://news.ycombinator.com/item?id=46822378
+  *HN story about Show HN: Indx.sh – Directory of AI coding rules, MCP servers*
+
+**HN3** (score:45) hn/paolobietolini (2026-02-07) [1pts, 0cmt]
+  Show HN: GTM MCP Server- Let AI Manage Your Google Tag Manager Containers
+  https://news.ycombinator.com/item?id=46922159
+  *HN story about Show HN: GTM MCP Server- Let AI Manage Your Google Tag Manag*
+
+**HN9** (score:38) hn/digitcatphd (2026-02-03) [1pts, 0cmt]
+  Show HN: ClawsMarket – Marketplace where AI agents discover tools
+  https://news.ycombinator.com/item?id=46878646
+  *HN story about Show HN: ClawsMarket – Marketplace where AI agents discover *
+
+**HN13** (score:36) hn/aspectrr (2026-02-04) [1pts, 0cmt]
+  Show HN: Fluid.sh – Claude Code for Infrastructure
+  https://news.ycombinator.com/item?id=46886358
+  *HN story about Show HN: Fluid.sh – Claude Code for Infrastructure*
+
+**HN5** (score:34) hn/victordg (2026-01-27) [1pts, 0cmt]
+  Claude Code skill for building ChatGPT Apps
+  https://news.ycombinator.com/item?id=46780766
+  *HN story about Claude Code skill for building ChatGPT Apps*
+
+---
+**Sources:**
+  ✅ Reddit: 10 threads
+  ✅ X: 12 posts
+  ✅ YouTube: 10 videos (3 with transcripts)
+  ✅ HN: 15 stories
+  ⚡ Web: assistant will use WebSearch