345 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 330+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8 more coding agents — engineering, marketing, product, compliance, C-level advisory, research, business operations, commercial & finance, and your daily productivity skills.
Plinth
Plinth is an open-source integrations skill for Claude Code, Cursor, Codex, and GitHub Copilot, published by jabrena. Its author describes it as: “Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers.”. The project has 423 stars on GitHub and is available under the Apache-2.0 license. Add it to your setup with `git clone https://github.com/jabrena/plinth ~/.claude/skills/plinth`.
Installation
Add Plinth to your agent with:
git clone https://github.com/jabrena/plinth ~/.claude/skills/plinthAlways review a skill's source before installing it. This command comes from the skill's public repository; the linked repo is the source of truth for exact setup steps.
When to use it
Reach for Plinth when you want integrations help from Claude Code without writing the same instructions every session. Load the skill and the agent picks it up automatically for relevant tasks.
Strengths
- Clear Apache-2.0 license — safe to read and adapt
- Established project with 423 GitHub stars
- Declares compatibility with Claude Code, Cursor, Codex, GitHub Copilot
- Actively maintained (recent commits)
Topics
Frequently asked questions
- What does Plinth do?
- Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers.
- How do I install Plinth?
- Run git clone https://github.com/jabrena/plinth ~/.claude/skills/plinth in your agent, then reload your skills. Review the source at https://github.com/jabrena/plinth before installing.
- Is Plinth free to use?
- Yes. Plinth is free and open source under the Apache-2.0 license, so you can read, run, and adapt it within that license's terms.
- Which agents does Plinth work with?
- Plinth declares compatibility with Claude Code, Cursor, Codex, and GitHub Copilot. Agent Skills use a portable SKILL.md format, so other compatible clients can usually load it too.
Related skills
More Integrations →One paragraph describing what this agent does, who it's for, and when to activate it.
Adversarial code review that breaks the self-review monoculture. Use when you want a genuinely critical review of recent changes, before merging a PR, or when you suspect Claude is being too agreeable about code quality. Forces perspective shifts through hostile reviewer personas that catch blind spots the author's mental model shares with the reviewer.
Answer Engine Optimization (AEO) skill — optimize content to be cited by AI language models (ChatGPT, Perplexity, Claude, Gemini, Mistral) as authoritative sources. Distinct from SEO — AEO optimizes for citation in LLM-generated responses, not search rankings. Use when planning content for AI-first search audiences, auditing existing content for E-E-A-T signals, tracking which pages get cited by which LLMs, or building a citation-friendly content strategy. Triggers — 'AEO audit', 'optimize for ChatGPT', 'get cited by Perplexity', 'LLM citation strategy', 'answer engine optimization', 'content for AI search', 'E-E-A-T audit'. Output is a markdown audit report (default) or JSON for pipeline integration. Stdlib-only Python tools.
Mint a tamper-evident, post-quantum-signed receipt for a consequential agent action (deploy, delete, pay, grant-access, model decision) so it can be verified later from the certificate alone. Use when an autonomous agent takes a side-effecting action that may need to be proven later, or when satisfying EU AI Act Article 12 record-keeping. Three decisions: whether an action needs a receipt, minting it, verifying it. Signing is delegated to the open-source OpenAgentOntology package. Not after-the-fact log analysis; not a hosted notary; not a legal opinion.