claude-codex-settings: Add Skills and Plugins to Coding Agents

Overview

claude-codex-settings packages reusable skills, commands, hooks, agents, and MCP-related configuration for AI coding tools. Rather than being a single application, it is a catalog of installable additions intended to make agent-assisted development more consistent and useful across supported tools.

It is suited to developers who want to choose specific workflow improvements, such as code simplification reviews or language-specific guidance, without adopting an entire configuration wholesale. Some components are tool-specific, while many are offered across multiple coding agents.

Key Features

• Plugin installation paths for Claude Code, Codex CLI, and Cursor, with Gemini CLI extensions documented for plugins.
• Skills covering Python, React, frontend design, databases, payments, cloud platforms, and office documents.
• Workflow plugins for reviewing and simplifying diffs, preserving context during compaction, and checking writing patterns.
• Optional advisor agents that request a second opinion through Claude or Codex tooling.
• Hooks that can enforce selected checks before writes or commits.
• Skills can also be installed individually using the Skills CLI or downloaded as ZIP files where provided.
• Shared agent guidance can be linked across tools using files such as CLAUDE.md, AGENTS.md, and GEMINI.md.

Use Cases

• A developer using several coding agents can reuse shared instructions and install comparable plugins across tools.
• A team can add a pre-commit simplification review or writing checks to an agent-assisted workflow.
• A Python or frontend developer can install focused guidance instead of maintaining prompts and references from scratch.
• An agent developer can use the browser automation, LiveKit, or platform-specific skills when working in those domains.

Getting Started

For Claude Code, add the marketplace and install a plugin:

claude plugin marketplace add fcakyon/claude-codex-settings
claude plugin install simplify@claude-settings

See the README and INSTALL.md for other tools, prerequisites, and plugin choices.

Alternatives

• ECC: ECC focuses on structured engineering workflows, security scanning, and agent memory, while claude-codex-settings offers a broader cross-tool collection of guidance and components.
• agency-agents: Agency Agents centers on role-specific instruction files and installation scripts, rather than a cross-tool mix of plugins, hooks, and workflow guidance.

Considerations

• This is a broad collection, not a single turnkey configuration. Review plugin descriptions and install only the components you need.
• Support and behavior vary by tool and plugin. For example, the README describes some hooks as Claude Code-only, while other plugins are available in multiple tools.
• Some features depend on external CLIs or authentication. The advisor plugins, for instance, require the relevant Claude Code or Codex CLI setup.
• The repository is actively maintained and is licensed under Apache-2.0; check individual upstream-derived skills and their documentation for component-specific details.