Skillselion

🚀 Install

Claude Code - one line:

claude mcp add skillselion --scope user -- npx -y skillselion-mcp

Claude Desktop / Cursor / Codex - add to your MCP config:

{ "mcpServers": { "skillselion": { "command": "npx", "args": ["-y", "skillselion-mcp"] } } }

No build step, no auth, no API key. One ~30 KB file via npx.

Want it fully automatic? npx -y skillselion-mcp setup registers the server and installs a session hook so your agent loads the right skill the moment a task matches - see Skill autopilot.

🔧 Tools

Tool	What it does
📥 load_skill	The everyday default: finds the best-matching skill for your task and materializes it - real SKILL.md in context + bundled scripts/references on disk - so the agent follows it like an installed skill. Returns ranked runner-ups you can switch to.
🧬 synthesize_skills	The cross-source playbook: merges the key rules of the top ~5 matching skills into one deduped, provenance-tagged digest - the field's consensus, not one author's take.
🔍 search_skillselion	Search the catalog by keyword or task; filter by skill / mcp / marketplace.
🏆 top_skillselion	The leaderboard - the most-installed skills and top-starred MCP servers right now.

🔒 Private by default

Read-only, no auth, no secrets. It never sends your code, files, or the context you pass - only a scrubbed search query + which skill matched, so the catalog learns what to add next. Set DO_NOT_TRACK=1 to disable even that.

🪄 Skill autopilot

npx -y skillselion-mcp setup        # interactive - pick your packs
npx -y skillselion-mcp setup --yes  # non-interactive - agents / CI

Registers the MCP globally and installs a Claude Code SessionStart hook that primes every session with skills relevant to you - so loads happen on their own.

Flag	What it does
--packs <a,b,…>	one or more packs (or all), e.g. --packs frontend,backend; frontend:6 sets a per-pack count
--per-pack N	skills per pack (default 3) · --top N sets the popular count
--auto	adapt each session to the current repo's stack
--history	infer your focus from Claude Code / Codex history (one-time scan)
--yes	never prompt (default when there's no terminal)

Packs: popular (default) · frontend · ai-agents · media · backend · devops · quality · automation.

Safe by design: ~/.claude/settings.json is merged, never clobbered; re-running de-dupes and upgrades the hook in place.

Var	Default	What it controls
GITHUB_TOKEN	-	optional, read-only; raises GitHub's rate limit for full multi-file skill loads (60 → 5000 req/hr)
SK_INLINE_BUDGET	6000	char cap on the in-context SKILL.md portion (the full skill is always on disk)
SK_SYNTH_N	5	how many top skills synthesize_skills merges (2-8)
SK_SYNTH_PER_SKILL	12	max rules kept per source skill
SK_SYNTH_BUDGET	4000	char cap on the merged digest
DO_NOT_TRACK	-	set 1 to disable the anonymous demand signal

The agent doesn't see the tools. Some clients surface MCP tools lazily - tell the agent to search its tools for "skillselion" first (e.g. ToolSearch), then call it. The setup hook automates this nudge.

load_skill returns only the SKILL.md, no bundled files. You hit GitHub's unauthenticated 60 req/hr limit - set a read-only GITHUB_TOKEN in the server's env.

"No skill on Skillselion clearly matches..." The relevance floor working as intended - nothing topical matched, so it refuses to waste your context. Try a more specific query.

Setup couldn't auto-register. Run the printed claude mcp add ... line yourself.

npm install
npm test           # offline: server boots, tools, synthesis
npm run test:live  # live catalog + GitHub (set GITHUB_TOKEN)

⭐ Like it?

• Star the repo - it helps other developers find it.
• Browse the full catalog → skillselion.com - thousands of skills, MCP servers & marketplaces, ranked by real installs.
• Bug or missing skill? Open an issue - PRs welcome.

📄 License

MIT © Skillselion