Catalog›Plugins›css-developmentCDcss-developmentCSS development workflows with Tailwind composition, semantic naming, and dark mode by default Open site Project Open in the app JSON README (API)CSS development workflows with Tailwind composition, semantic naming, and dark mode by defaultREADMELoading documentation…<!-- ABOUTME: README for the 2389 Research Claude Code plugin marketplace --> <!-- ABOUTME: Public-facing documentation with install instructions and plugin catalog --> # 2389 Research Claude Code Plugin Marketplace 28 plugins and MCP servers for Claude Code — parallel exploration, iterative refinement, binary reverse engineering, structured decision-making, and more. Built by the team at [2389](https://2389.ai). These are the tools we use every day. **Browse the marketplace:** https://skills.2389.ai ## Quick Start Install any plugin in **any agent** (Claude Code, Cursor, Codex, …) with [vercel-labs/skills](https://github.com/vercel-labs/skills): ```bash npx skills add 2389-research/simmer ``` Or natively in Claude Code: ```bash # Add the marketplace, then install any plugin /plugin marketplace add 2389-research/claude-plugins /plugin install simmer@2389-research ``` > The 4 MCP servers (journal, socialmedia, slack-mcp, agent-drugs) install via Claude Code only — they ship no skills for npx. ## Available Plugins ### Meta Plugins | Plugin | Description | |--------|-------------| | [botboard-biz](https://github.com/2389-research/botboard-biz) | Social media and journaling capabilities for AI agents | | [better-dev](https://github.com/2389-research/better-dev) | CSS, Firebase, code quality, testing, parallel exploration, docs verification, codegen | | [sysadmin](https://github.com/2389-research/sysadmin) | Structured Linux maintenance and diagnostics | ### Development | Plugin | Description | |--------|-------------| | [css-development](https://github.com/2389-research/css-development) | CSS workflows with Tailwind, semantic naming, dark mode by default | | [firebase-development](https://github.com/2389-research/firebase-development) | Firebase project workflows: setup, features, debugging, validation | | [landing-page-design](https://github.com/2389-research/landing-page-design) | High-converting landing pages with anti-AI-slop principles | | [xtool](https://github.com/2389-research/xtool) | Xcode-free iOS development with xtool via SwiftPM | | [building-multiagent-systems](https://github.com/2389-research/building-multiagent-systems) | Architecture patterns for multi-agent systems | | [speed-run](https://github.com/2389-research/speed-run) | Token-efficient code generation with hosted LLM (Cerebras) | | [thrifty](https://github.com/2389-research/thrifty) | Tiered-delegation execution: Sonnet plans a spec into sprints, cheap Haiku executes + self-verifies; ~64% cheaper than Opus | | [binary-re](https://github.com/2389-research/binary-re) | Agentic binary reverse engineering for ELF binaries | ### Testing and Quality | Plugin | Description | |--------|-------------| | [test-kitchen](https://github.com/2389-research/test-kitchen) | Parallel exploration of implementation approaches | | [simmer](https://github.com/2389-research/simmer) | Iterative artifact refinement with investigation-first judges | | [scenario-testing](https://github.com/2389-research/scenario-testing) | End-to-end testing with real dependencies, no mocks | | [fresh-eyes-review](https://github.com/2389-research/fresh-eyes-review) | Final sanity check before commits/PRs | | [documentation-audit](https://github.com/2389-research/documentation-audit) | Verify documentation against codebase reality | | [review-squad](https://github.com/2389-research/review-squad) | Dispatch panels of specialized subagents for project review | | [prbuddy](https://github.com/2389-research/prbuddy) | PR health assistant: CI monitoring, review triage, fixes | | [git-repo-prep](https://github.com/2389-research/git-repo-prep) | Prepare codebases for public/open-source release | ### Business and Strategy | Plugin | Description | |--------|-------------| | [ceo-personal-os](https://github.com/2389-research/ceo-personal-os) | Personal operating system for executives | | [worldview-synthesis](https://github.com/2389-research/worldview-synthesis) | Systematic worldview articulation | | [deliberation](https://github.com/2389-research/deliberation) | Decision-making through deliberation and discernment | | [summarize-meetings](https://github.com/2389-research/summarize-meetings) | Batch-process meeting transcripts into structured summaries | ### Utilities | Plugin | Description | |--------|-------------| | [terminal-title](https://github.com/2389-research/terminal-title) | Auto-update terminal title with emoji + project + topic | | [remote-system-maintenance](https://github.com/2389-research/remote-system-maintenance) | Linux system diagnostics and maintenance via SSH/tmux | ### MCP Servers | Server | Description | |--------|-------------| | [agent-drugs](https://github.com/2389-research/agent-drugs) | Digital drugs that modify AI behavior through prompt injection | | [socialmedia](https://github.com/2389-research/mcp-socialmedia) | Social media functionality for AI agents | | [journal](https://github.com/2389-research/journal-mcp) | Private journaling capability for Claude | | [slack-mcp](https://github.com/2389-research/slack-mcp) | Slack workspace integration MCP server | ## Adding a Plugin 1. Create a GitHub repo under `2389-research/` with standard plugin structure 2. Add an entry to `.claude-plugin/marketplace.json` 3. Run `npm run generate` to update the marketplace site 4. Commit and push See [CLAUDE.md](https://github.com/2389-research/claude-plugins/blob/HEAD/CLAUDE.md) for the full marketplace.json format and detailed instructions. ## Like this? If these plugins save you time, a ⭐ helps us know what's landing. We build what people use. ## Contact **Email:** [hello@2389.ai](mailto:hello@2389.ai) — we'd love to hear what you're building with these. ## License MIT DetailsTypePluginsPublisher2389-researchSourcemarketplaceCategoryToolsStars97Copies (forks)8Proposed changes1Last update2026-10-21T06:52:06ZProject statusActiveLanguageJavaScriptLicenseMITAdded2026-08-30 01:48:58Updated2026-08-30 01:48:58Source id2389-research/claude-plugins/css-developmentMorePluginsAll from 2389-researchA–Z index
