Plugins that work with Codex

An agent-harness optimization system covering skills, memory, security and research-first workflows for Claude Code and other agents.

Persistent memory across sessions: captures what an agent does and compresses it for later reuse.

A multi-harness plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot and others.

Product-management skills and commands packaged as 9 Claude Code plugins, from discovery to launch and growth; per its README, also installs in Codex.

Every's Compound Engineering plugin for Claude Code, Codex, Cursor and more.

Claude Code plugin that runs several AI providers (Codex, Copilot, Ollama, Perplexity and others) on one task and flags where they disagree.

A meta-harness for Claude Code and Codex that orchestrates multi-agent swarms and workflows.

Agent skills for drafting design specs with a context-holding agent and reviewing them with fresh subagents; per its README, not an official Google product.

Plugin of SEO, GEO, paid-ads and analytics workflow skills for Claude Code, Codex, Cursor and others; some workflows use a hosted NotFair MCP connection.

A hand-picked collection of Claude Code resources: workflows, commands, tools and more.

Microsoft's agent plugin that bundles Azure skills with the Azure MCP Server and Foundry MCP, for GitHub Copilot, Claude Code and other hosts.

Claude Code plugin that sends the same question to several AI coding agents in parallel and summarizes where their answers agree and differ.