THIS IS AN ACTUAL F*CKING GOLDMINE.
If you run Claude Code out of the box, you are barely using 10% of it.
I went through 68,900 GitHub repos tagged claude-code and pulled the 20 best open-source plugins.
That is $29,077 worth of tools sitting there for $0 (970 skills, 273 agents, 1.8M stars combined).
Wild part is seeing paid marketplaces charge $19 for a basic skill and $39 for a single agent when all of this is already free.
If you are still running Claude raw - no memory, default AI-slop UI, and raw logs torching your token budget - start here:
Everything Claude Code - 71 agents, 311 skills, and 97 commands in one harness. Closest thing to a real Agent OS https://t.co/ReuNoEqwno
claude-skills - 380+ practical skills for finance, marketing, code, and business ops https://t.co/VSrv5iy6Tt
ponytail - makes Claude write code like a lazy senior dev. 53% less code, 45% fewer tokens on Opus 5.5 https://t.co/mZnnVHzuux
UI UX Pro Max - 79 styles, 192 palettes, and 74 font pairings so your apps stop looking AI-generated https://t.co/EC5UrEH6xB
video-shotcraft - turns your live web pages into beat-synced product videos in Remotion https://t.co/lAVrbWSJCe
rtk - Rust CLI proxy that cuts 60-90% of token waste from terminal outputs https://t.co/m1kIc8BdqO
claude-mem - logs what your agent did, summarizes the session, and feeds it into your next run https://t.co/Q5JgUODLct
Agent-Reach - lets your agent read YouTube, GitHub, Reddit, and the web from one CLI. Zero API fees https://t.co/tLa64orPtv
agent-skills - Addy Osmani's 25 production skills: spec, plan, build, verify, review, ship https://t.co/sQNxj3QkKs
Ruflo - runs agent swarms across Claude Code and Codex with shared memory https://t.co/8RLlTgsME4
agents - 202 agents, 185 skills, and 105 commands packed into 94 plugins you can install one by one https://t.co/RWhLcZiv7C
planning-with-files - saves your plan in local markdown on disk so it survives crashes and /clear https://t.co/9ogrGbkSYU
context-mode - sandboxes heavy tool outputs (shrinks 315 KB down to 5.4 KB before it hits the model) https://t.co/Bf0pE80Mkv
headroom - strips down messy JSON, logs, and tool responses before they eat your context https://t.co/g3huWKJ6aP
taste-skill - gives Claude actual art direction, real reference photos, and multi-screen browser checks https://t.co/jvXo2mr9MW
Graphify - turns your code, docs, and SQL schemas into a local knowledge graph. Nothing leaves your PC https://t.co/rvoWs1TnDG
Understand-Anything - builds an interactive map of your codebase with search and diff impact analysis https://t.co/GpjexOgbA3
cc-switch - desktop app to swap providers in one click and manage all your MCPs, prompts, and skills https://t.co/fEQHJiVIvN
pm-skills - 69 product skills and 42 chained workflows from early discovery to launch https://t.co/voHsFxxcLc
career-ops - scans job boards, scores roles against your CV, and drafts the applications (you just hit submit) https://t.co/sKQDETnTjU
Quick warning before you install everything:
Do not load all 20 at once. Every plugin you add sits in your context window, and bloating it will make the model dumber and slower.
Just pick 3 tonight:
1 for memory (claude-mem)
1 for token savings (ponytail or rtk)
1 for your actual daily work
Run the exact same task before and after. If a plugin doesn't make the output noticeably better or cheaper, delete it.
Bookmark this before you end up paying $39 for a wrapper that is already free on GitHub.