2389 Research Plugins
2389 Research marketplace: 28 plugins and MCP servers for Claude Code, from parallel solution search to CSS and Firebase.
- 102 ★ on the repository
- Last commit
Extended access
Why this level
- Catalog plugins run commands, edit files and call outside services under their own rules.
- Some MCP servers work with Slack and third-party social networks.
Install
- Works in
Manual install
/plugin marketplace add 2389-research/claude-pluginsThen `/plugin install simmer@2389-research` or another plugin from the catalog.
Access and checks
How we reviewExtended accessThe tool runs code or makes network calls and only reads external data.
- Catalog plugins run commands, edit files and call outside services under their own rules.
- Some MCP servers work with Slack and third-party social networks.
This is third-party code. Review the repository files before installing.
What it does
The repository publishes a `marketplace.json` catalog from which Claude Code installs the 2389 team plugins. The plugins themselves live in separate repositories of the organization. The list holds development workflows (CSS with Tailwind, Firebase, fast code generation, reverse engineering of ELF binaries), quality checks (end-to-end tests without mocks, a pre-commit sanity pass, documentation audits, reviewer panels) and business skills such as meeting transcript summaries. Four more MCP servers connect through Claude Code only: a journal, a social network for agents, a Slack integration and a server that alters agent behavior through prompts. Some plugins install in any agent with `npx skills add`.
Who it is for. Teams on Claude Code that want ready development and review workflows rather than one standalone skill.
Good fit when
- A team wants one plugin set for CSS, Firebase and tests that installs with one command.
- Changes need an independent second look before a commit.
- A task should be tried several ways at once and the best one chosen.
- Meeting transcripts must be turned into structured summaries in a batch.
Not a fit when
- One narrow skill is enough and a 28-item catalog is excessive.
- The agent is another one and a plugin needs an MCP server; servers install through Claude Code only.
- Security rules forbid connecting third-party MCP servers to Slack or mail.
Example request
Add the 2389 Research marketplace and install the simmer plugin, then show how it improves a draft.Limitations
The repository is a showcase: judge each plugin by its own repository code. MCP servers install in Claude Code only and have no skills for `npx`. Some plugins call outside services (Cerebras for fast generation, Slack, social networks), each with its own key requirements. The list includes a server that alters agent behavior through prompts, so review its purpose and consequences before installing. The repository also holds private journal notes that are worth ignoring.
How to disable. Run `/plugin uninstall <name>@2389-research` for a plugin and `/plugin marketplace remove 2389-research` for the whole catalog.
FAQ
How do I add the marketplace?
In Claude Code run `/plugin marketplace add 2389-research/claude-plugins`, then `/plugin install` with the plugin name and the `@2389-research` suffix.
Can a plugin be installed in Cursor or Codex?
Yes, for plugins with skills: `npx skills add 2389-research/simmer`. The four MCP servers have no such route.
Where is the plugin code?
In separate repositories of the 2389-research organization; the catalog only links to them in `marketplace.json`.
What categories are there?
Meta plugins, development, testing and quality, business and strategy, utilities and MCP servers. The README has the full list with descriptions.
Is there a catalog website?
Yes, `skills.2389.ai`: the page is generated from `marketplace.json` with `npm run generate`.
Discussion
No questions or reviews yet.
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Comparison with similar tools
Cards that share the main search query, and how they differ.
| Tool | Official | Repository stars | Main difference |
|---|---|---|---|
| 2389 Research Plugins (this card) | no | 102 | |
| Claude Plugins Community | no | 4,871 | curated community plugins; this is the own catalog of a single team, 2389 |
| Agentic Plugin Marketplace by wshobson | no | 42,418 | a large set of plugins, agents and commands; this is 28 plugins from one team with a catalog site |
README in short
The README lists plugins by group and two install routes. A plugin is added by creating a repository in the organization and an entry in `marketplace.json`; the catalog page is built by a script.