jsm: Premiumskills at yourfingertips
Search, install, and sync premium Claude Code skills directly from your terminal. Offline-first with deterministic SHA-256 versioning and fast local search.
Built for serious developers.
Every architectural decision optimized for speed, reliability, and your workflow.
Offline-First SQLite
Your skills live locally in SQLite. Work offline, search instantly, never lose access.
Cross-Device Sync
Install on your laptop, sync to your desktop. One subscription, unlimited devices.
Tantivy Full-Text Search
Blazing fast BM25 search across all skill content. Find what you need instantly.
SHA-256 Versioning
Deterministic content hashing ensures you always know exactly what version you have.
Workspace Mirroring
Mirror workspace skills into your global Claude skills directory (with watch mode and dry-run).
PKCE OAuth Security
Industry-standard OAuth 2.0 with PKCE. Your credentials never touch the network in plaintext.
See What Skills Can Do
Each skill is a production-grade prompt engineered for a specific task. Here are the highest-rated ones.
mcp-server-design
Design agent-friendly MCP servers with optimal UX. Use when building MCP tools, designing agent APIs, writing tool documentation, implementing error handling, or creating multi-agent coordination systems.
Works with: python, typescript, language-agnostic
Subscribe to accessasupersync-mega-skill
Replace Tokio Rust stacks with Asupersync. Use when migrating tokio/axum/hyper/tonic apps, designing native Cx/region-based services, or debugging Asupersync internals.
Subscribe to accesschangelog-md-workmanship
Rebuild CHANGELOG.md files and release histories from git, tags, releases, and issue trackers. Use when writing changelogs, version timelines, or agent-facing project history summaries.
Works with: language-agnostic
Subscribe to accessinteractive-visualization-creator
Build interactive visualizations for Next.js (SVG, Canvas, Three.js, Framer Motion). Use when creating diagrams, animations, simulations, or data visualizations.
Subscribe to accesse2e-testing-for-webapps
E2E testing for Next.js + Playwright + Supabase. OAuth bypass via test users, interactive debugging, visual QA. Use when: E2E, Playwright, visual regression, Electron testing.
Subscribe to accessNot just markdown files. Complete systems.
This section is driven by the synced canonical catalog, not a fake sample list. Dozens of premium skills live in the premium library. The preview below surfaces the actual names, scores, token footprint, and manifest signals from the current catalog.
mcp-server-design
Live from the synced canonical catalog
Design agent-friendly MCP servers with optimal UX. Use when building MCP tools, designing agent APIs, writing tool documentation, implementing error handling, or creating multi-agent coordination systems.
These are canonical metadata scores, not crowd review aggregates.
Manifest signals
Best fit
Native jsm Engine
The functionality that used to live in a companion tool now ships directly inside jsm: hybrid search, local-first cache, context-aware suggestions, and MCP-ready compilation.
Hybrid Search Engine
BM25 + deterministic hash embeddings fused with Reciprocal Rank Fusion for stable, high-recall search.
One CLI. End-to-end workflow
Single CLI
No companion tool required. One workflow, one config.
Unified Search + Sync
Search locally, sync globally, stay consistent everywhere.
Agent-Native
MCP-ready compilation for Claude Code and Cursor.
Deterministic Versioning
Same inputs, same hash, no surprises.
From zero to productive in 5 minutes
Follow along with this interactive guide to get started with jsm. Each step includes real commands you can copy and run.
Install the CLI
Get jsm installed on your machine in seconds.
One-line installer (macOS/Linux)
Verify the binary is on your PATH
- Windows (native PowerShell): irm https://jeffreys-skills.md/install.ps1 | iex
- Verify install: jsm --version
Get started in 30 seconds.
One command to install. One command to authenticate. You're ready to go.
curl -fsSL "https://jeffreys-skills.md/install.sh?$(date +%s)" | bash
jsm --version # Verify installation
Available for Intel (x86_64) and Apple Silicon (aarch64). Auto-detects architecture.
After installation
jsm loginOpens browser for secure OAuth authentication. In WSL2, containers, or remote shells, use jsm login --remote. If loopback forwarding is already configured, jsm login --manual also works.
jsm search <query>Search for skills by name or keyword
jsm install <skill>Install a skill to your Claude, Codex, and Gemini skills directories
Everything you need.
Powerful CLI commands designed for speed and simplicity.
Authentication
4 commands
jsm loginAuthenticate via browser OAuth (PKCE)
jsm auth set-key jsm_xxxUse an API key (alternative to OAuth)
jsm whoamiShow current authenticated user + subscription
jsm logoutClear local credentials
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