Comparison
claude-code-plugins-plus-skills vs harness-books
Verdict
Pick claude-code-plugins-plus-skills if claude-code-plugins-plus-skills offers an expansive collection of plugins and skills for Claude Code with features unique to its system; pick harness-books if harness-books provides in-depth knowledge on Claude Code and Codex's design philosophies through two books focused on constraints, query loops, and more.
Markdown twin · claude-code-plugins-plus-skills alternatives · harness-books alternatives
GraphCanon updated 1w
claude-code-plugins-plus-skills
jeremylongshore/claude-code-plugins-plus-skills
★ 2.6kpushed Aug 11, 2026
Trust & integrity
| Signal | claude-code-plugins-plus-skills | harness-books |
|---|---|---|
| Maintenance | Very active (0d since push) As of 1w · github_public_v1 | Slowing (100d since push) As of 3w · github_public_v1 |
| Provenance | Not a fork · Personal account As of 1w · github_public_v1 | Not a fork · Personal account As of 3w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- claude-code-plugins-plus-skills
- Claude Code Plugins Plus Skills
- harness-books
- Two books on harness engineering for Claude Code and Codex detailing design philosophies such as constraints and query loops.
Stars
- claude-code-plugins-plus-skills
- 2.6k
- harness-books
- 2.7k
Forks
- claude-code-plugins-plus-skills
- 384
- harness-books
- 320
Open issues
- claude-code-plugins-plus-skills
- 27
- harness-books
- 5
Language
- claude-code-plugins-plus-skills
- Python
- harness-books
- Python
Adopt for
- claude-code-plugins-plus-skills
- claude-code-plugins-plus-skills offers an expansive collection of plugins and skills for Claude Code with features unique to its system.
- harness-books
- harness-books provides in-depth knowledge on Claude Code and Codex's design philosophies through two books focused on constraints, query loops, and more.
Persona
- claude-code-plugins-plus-skills
- -
- harness-books
- -
Runtime
- claude-code-plugins-plus-skills
- -
- harness-books
- -
License
- claude-code-plugins-plus-skills
- MIT
- harness-books
- -
Last pushed
- claude-code-plugins-plus-skills
- Aug 11, 2026
- harness-books
- Apr 19, 2026
Categories
- claude-code-plugins-plus-skills
- AI Agents, Developer Tools
- harness-books
- AI Agents, Developer Tools
Trust and health
Maintenance
- claude-code-plugins-plus-skills
- Very active (96%)
- harness-books
- Slowing (36%)
Days since push
- claude-code-plugins-plus-skills
- 0d
- harness-books
- 100d
Open issues (now)
- claude-code-plugins-plus-skills
- 27
- harness-books
- 5
Full report
- claude-code-plugins-plus-skills
- Trust report
- harness-books
- Trust report
Choose claude-code-plugins-plus-skills if…
- Tags unique to claude-code-plugins-plus-skills: agent-skills, automation, claude-code, marketplace.
- When you need extensive automation capabilities tailored specifically to the Claude Code ecosystem, leveraging over 425 plugins and 2810 skills.
- More recently updated (last pushed Aug 11, 2026).
When NOT to use claude-code-plugins-plus-skills
- Avoid if your project requires integration with competitor systems as claude-code-plugins-plus-skills is deeply integrated into Claude Code and might not interoperate smoothly.
- If you are looking for proprietary support or services, since this open-source marketplace relies on community contributions.
- When rapid changes in the plugin ecosystem affect stability, considering the marketplace's dynamic nature may impact legacy system compatibility.
Choose harness-books if…
- Tags unique to harness-books: agentic-ai, context-engineering, prompt-engineering.
- When needing detailed insights into the internal mechanisms of AI agents like Claude Code and Codex for informed development efforts.
- More GitHub stars (2.7k vs 2.6k) - visibility, not fit.
When NOT to use harness-books
- If seeking generic AI agent design guidelines that do not focus on the specifics of Claude Code or Codex implementations.
- When the aim is to work with other types of AI agents or frameworks unrelated to the technologies detailed in harness-books.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (jeremylongshore/claude-code-plugins-plus-skills) · observed Aug 12, 2026
- GitHub forks (jeremylongshore/claude-code-plugins-plus-skills) · observed Aug 12, 2026
- Last push (jeremylongshore/claude-code-plugins-plus-skills) · observed Aug 11, 2026
- License file (MIT) · observed Aug 12, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (wquguru/harness-books) · observed Jul 28, 2026
- GitHub forks (wquguru/harness-books) · observed Jul 28, 2026
- Last push (wquguru/harness-books) · observed Apr 19, 2026
- License file (unknown) · observed Jul 28, 2026
- Decision facts (enrichment) · observed Jul 15, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: claude-code-plugins-plus-skills 2.6k · harness-books 2.7k (synced Aug 12, 2026).
Common questions
- What is the difference between claude-code-plugins-plus-skills and harness-books?
- claude-code-plugins-plus-skills: Claude Code Plugins Plus Skills. harness-books: Two books on harness engineering for Claude Code and Codex detailing design philosophies such as constraints and query loops.. See the comparison table for live GitHub stats and shared categories.
- When should I choose claude-code-plugins-plus-skills over harness-books?
- Choose claude-code-plugins-plus-skills over harness-books when Tags unique to claude-code-plugins-plus-skills: agent-skills, automation, claude-code, marketplace; When you need extensive automation capabilities tailored specifically to the Claude Code ecosystem, leveraging over 425 plugins and 2810 skills; More recently updated (last pushed Aug 11, 2026).
- When should I choose harness-books over claude-code-plugins-plus-skills?
- Choose harness-books over claude-code-plugins-plus-skills when Tags unique to harness-books: agentic-ai, context-engineering, prompt-engineering; When needing detailed insights into the internal mechanisms of AI agents like Claude Code and Codex for informed development efforts; More GitHub stars (2.7k vs 2.6k) - visibility, not fit.
- When should I avoid claude-code-plugins-plus-skills?
- Avoid if your project requires integration with competitor systems as claude-code-plugins-plus-skills is deeply integrated into Claude Code and might not interoperate smoothly. If you are looking for proprietary support or services, since this open-source marketplace relies on community contributions. When rapid changes in the plugin ecosystem affect stability, considering the marketplace's dynamic nature may impact legacy system compatibility.
- When should I avoid harness-books?
- If seeking generic AI agent design guidelines that do not focus on the specifics of Claude Code or Codex implementations. When the aim is to work with other types of AI agents or frameworks unrelated to the technologies detailed in harness-books.
- Is claude-code-plugins-plus-skills or harness-books more popular on GitHub?
- harness-books has more GitHub stars (2,702 vs 2,618). Stars measure visibility, not whether either tool fits your constraints.
- Are claude-code-plugins-plus-skills and harness-books open source?
- Yes - both are open-source projects on GitHub.
- Where can I find alternatives to claude-code-plugins-plus-skills or harness-books?
- GraphCanon lists graph-backed alternatives at claude-code-plugins-plus-skills alternatives and harness-books alternatives (claude-code-plugins-plus-skills markdown twin, harness-books markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, claude-code-plugins-plus-skills or harness-books?
- claude-code-plugins-plus-skills: Very active. harness-books: Slowing. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for claude-code-plugins-plus-skills and harness-books?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: claude-code-plugins-plus-skills trust report; harness-books trust report.