The Best Claude Code Skills

We haven't run these ourselves, so this is a sourcing job, not a hands-on review: every install command below comes from actually reading the repo's .claude-plugin/marketplace.json or SKILL.md, not from a listicle. Full method is below the shortlist.

The shortlist

Why each one, with the caveat that matters

superpowers — best for development methodology. obra/superpowers is large and independently popular (272,580 stars as of this writing, MIT), and ships its own self-hosted plugin marketplace — .claude-plugin/marketplace.json names it superpowers-dev, authored by Jesse Vincent. It bundles skills for brainstorming, planning, TDD, systematic debugging, and code review into one methodology rather than one narrow task. This is the same framework Nous Research separately adapted into Hermes Agent's own bundled skills, under a different name, which says something about how widely its approach has been copied. Caveat: it's opinionated about process, not just capability — it'll only help if you actually follow the workflow it enforces.

document-skills — best official document generation. One plugin bundling four Anthropic-authored skills — xlsx, docx, pptx, pdf — each with a long, specific description telling Claude exactly when to trigger (down to phrases like "Word doc" or "the deck"). Caveat: these are Proprietary-licensed (LICENSE.txt in the repo has the actual terms), not MIT — read the license before redistributing, even though using them inside Claude Code is unrestricted.

example-skills — best official grab-bag. A single plugin bundling twelve Anthropic reference skills at once: skill-creator, mcp-builder, webapp-testing, frontend-design, canvas-design, theme-factory, brand-guidelines, and five more. You can't install just one through the plugin route — it's all twelve or none — though nothing stops you copying a single skill's folder into ~/.claude/skills/ by hand if you only want one. skill-creator in particular is worth knowing about even if you install nothing else from this bundle: it's what runs the eval workflow described on the flagship page.

claude-api — best for building on the Claude API. A single, narrow official skill: Claude API and SDK documentation, packaged so Claude can reference it while you build an LLM-powered app rather than guessing at method signatures.

audit-context-building — best for pre-audit codebase understanding. One of several plugins in Trail of Bits's own marketplace (trailofbits, per their marketplace.json) — a well-known security research firm, not an anonymous contributor. It reads a codebase function by function, records what each one assumes and depends on, and writes the results to files instead of filling up your conversation. Trail of Bits also publishes narrower security plugins (smart-contract auditing, for one) in the same marketplace if your need is more specific than general codebase review. Caveat: CC-BY-SA-4.0, not MIT — a share-alike license, worth knowing if you plan to fork or redistribute it.

nvidia-skills — best for GPU/CUDA/robotics work. NVIDIA's own marketplace (nvidia-official) ships one plugin that acts as a router across their full catalog: GPU acceleration, CUDA, agent training, data loading, inference, robotics, Physical AI, Omniverse, and simulation workflows. Apache-2.0. Explicitly built to work in both Claude Code and Codex, per NVIDIA's own repo description — genuinely useful if your work touches any of those domains, genuinely irrelevant otherwise.

book-to-skill — best for turning a document into a skill. A standalone, MIT-licensed, cross-agent skill (works in Claude Code, GitHub Copilot CLI, and Amp) that converts a PDF, EPUB, DOCX, or plain-text document into a structured skill — extracting frameworks and mental models rather than producing a summary. Real standalone traction (over 20,000 stars) for a single-purpose tool, not a mega-registry. Caveat: it needs shell access to run its own extraction script, so review what that script does before granting it — the repo's own notes say allowed-tools is deliberately left out of its frontmatter to stay agent-neutral, meaning each host agent, Claude Code included, prompts you for shell and file permissions on first use rather than the skill pre-approving itself.

Where public evidence runs out

The long tail here is enormous — GitHub search turns up dozens of "awesome-claude-code-skills" registries, each claiming its own curated count, and hundreds of narrow single-purpose repos for specific frameworks, languages, and internal workflows. Star counts on the narrow ones cluster low and close together, and there's no independent usage signal beyond stars and push recency. If you need something specific that isn't above, evaluate the candidates yourself against the repository checklist rather than trust a ranked list — ours or anyone else's — that would be guessing at that scale.

How we decided what belongs here

Same weighting as elsewhere on this site: provenance first (official Anthropic skills and named-vendor marketplaces — Trail of Bits, NVIDIA — get priority over anonymous community repos); verifiability (every install command above came from reading the actual marketplace.json or SKILL.md, not a blog post); maintenance signal (push recency — the only real observable signal; no download telemetry exists for any of this); and breadth vs. specificity (seven picks covering genuinely different jobs, not seven variations on the same one). We didn't pad this to ten — three more candidates were considered and dropped because we couldn't independently verify their install path or maintenance status to the same standard.

Sources

• obra/superpowers (GitHub) — .claude-plugin/marketplace.json, .claude-plugin/plugin.json
• anthropics/skills (GitHub) — .claude-plugin/marketplace.json
• trailofbits/skills (GitHub) — .claude-plugin/marketplace.json
• NVIDIA/skills (GitHub) — .claude-plugin/marketplace.json
• virgiliojr94/book-to-skill (GitHub) — SKILL.md
• Repository metadata (stars, license, last-push date) pulled directly via the GitHub API, August 2026