Universal Plugin Hub

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Plugin marketplace for DeepSeek Harness (DSH). The official Claude plugin catalog comes pre-loaded, and Git repositories can be added as plugin sources — install with one click and skills, subagents, MCP connectors, LSP servers, and hooks are wired into DSH.

What it does

Universal Plugin Hub brings a visual plugin market to DSH. The official Claude plugin catalog is built in: pick a plugin, click Install, and it is ready to use in DSH. You can add other Git repositories as plugin sources and install their plugins the same way.

When you install a plugin, the hub wires its pieces into DSH automatically:

• skills and slash commands become agent skills (commands/ is mirrored into skills/, as is a root SKILL.md)
• subagents are compiled into one delegated Hub skill per plugin (skills/<plugin>-agents/)
• MCP connectors register into cordis.patch.yml as @deepseek-ai/dsh-mcp-client entries
• LSP servers register as @deepseek-ai/dsh-lsp-stdio entries — install typescript-lsp, restart DSH, and the lsp tool works
• hooks are loaded into DSH by registering a per-plugin @deepseek-ai/dsh-hooks-claude-code bridge entry; the bridge runs the plugin's native Claude Code hooks.json on DSH's own interception points

Features

Marketplace and browsing

• Built-in catalog — the official Claude plugin catalog (anthropics/claude-plugins-official) loads by default, no configuration needed
• Plugin sources — add Git repositories as sources; a new source is test-cloned first and its plugin count is shown before it is saved
• Tab drag sorting — drag source tabs to reorder them; the bar auto-scrolls when you drag to an edge, and the order persists
• Tab bar scrolling — the mouse wheel scrolls the bar horizontally, and fade masks at the edges show when more tabs are hidden
• Scroll memory — each source keeps its own scroll position and filter; switching tabs or coming back from a detail page restores them
• Quick scroll to top — clicking the selected source's tab again scrolls the grid to the top and re-sorts, bringing recently installed plugins to the front
• Fuzzy search — ranked matching over name, author, and description, ignoring separators like - and _; filter and sort controls sit next to the search bar
• Hover preview — hovering a card shows its description and category in a popover

Install and wiring

• Automatic wiring — installing a plugin mirrors its skills and slash commands into the skills directory, compiles subagents into one Hub skill, and registers MCP connectors, LSP servers, and Claude/Codex hooks into cordis.patch.yml
• Detail page — lists a plugin's skills, subagents, and prompts; connectors show connection state, LSP servers show an active dot, and hooks are listed by event name (SessionStart, PreToolUse: Bash)
• LSP pre-flight — if a language server binary is missing, registration is skipped with an installation hint instead of writing a broken entry
• Reinstall and replace — installing over an existing plugin replaces it; a same-name plugin from another source takes over the old record

Management

• Enable / disable — toggle plugins and connectors without restarting DSH
• Per-tool MCP switches — hover a tool to see its description and parameters, then click the status badge to disable or re-enable that single tool
• Connector auth — test a token against the real endpoint (8-second timeout) before saving; token, URL, custom headers, env, args, and OAuth are stored per connector
• Updates — the update button is enabled only when a newer version exists; the tooltip shows the target version
• Uninstall — one confirmation removes the plugin copy, skill registration, patch entries, and cached tool state

Interface

• Light and dark themes — separate design-token palettes for each mode, following the DSH UI theme
• Markdown rendering — plugin descriptions render through a built-in Markdown renderer with headings, lists, quotes, code blocks, Note:/Warning: callouts, command highlighting, and links, styled for both themes
• Local cache — sources and marketplace listings are cached in the browser, so the panel renders immediately while fresh data loads
• Icon caching — avatars are served through a disk-cached proxy; plugins without an avatar get a vector badge picked by name hash
• Rendering performance — offscreen cards skip layout (content-visibility: auto), and scroll masks update at most once per frame

Requirements

• Node.js 18+
• DSH with the web profile (0.1.0-rc.6 or newer recommended). The hub's own install (dsh plugin add universal-plugin-hub) runs a postinstall script that pre-provisions the 5 LSP/hook host packages into the DSH installation — versions are resolved to match the running DSH release, and a provisioning failure fails the hub install outright. After that, plugins declaring LSP servers or Claude/Codex hooks register as a single cordis.patch.yml write each (DSH HMR picks them up within ~1s).

Where data lives

All hub state sits under ~/.dsh/agent-skills/universal-plugin-hub/:

• state.json — sources, installed-plugin records, and their order
• market/<sourceId>/ — shallow (--depth 1) clones of each plugin source
• market/remote/ — clones of plugin repositories installed from remote URLs
• installed/<name>/ — the working copy of each installed plugin (skills, agents, connectors)
• icons/ — cached plugin icons, served through the hub's /icon proxy

Connectors, LSP servers, and hooks register by writing entries into the DSH cordis patch ($DSH_HOME/profiles/web/cordis.patch.yml); per-tool MCP switches live in ~/.dsh/.mcp-tools-state.json.

Install

From the DSH marketplace

Search Universal Plugin Hub in the DSH plugin market and click install.

From the CLI

dsh plugin add universal-plugin-hub

Manually

cd ~/.dsh/plugins
git clone https://github.com/CaesarEmperor/universal-plugin-hub.git
cd universal-plugin-hub
npm install

Restart DSH, then open the Universal Plugin Hub panel from the DSH UI.

Quick start

1. Open the panel. The official Claude plugin catalog is loaded by default; browse or search right away.
2. Optional: add another source, e.g. anthropics/claude-plugins-community.
3. Browse or search. Open a plugin to see what it ships: skills, subagents, connectors, LSP servers.
4. Click Install. The hub copies the plugin, registers skills and subagents, wires any LSP servers and Claude/Codex hooks into DSH, and auto-connects what needs no setup.
5. Manage installed plugins from the manage page — enable/disable, toggle connectors and individual MCP tools, verify auth tokens, update, or remove.

Project structure

src/       server: REST routes, marketplace parser, git ops, agents compiler, install lifecycle
client/    UI — a single React file loaded through the DSH client runtime (no build step)
scripts/   postinstall — pre-provisions the 5 LSP/hook host packages into the DSH install

Development

npm install
node --check src/index.js
node --check client/client.js
node scratch/verify-lsp-support.mjs   # end-to-end check against a throwaway DSH_HOME

The UI is a single React file loaded through the DSH client runtime (dsh-client-runtime and dsh-client-ui-theme are injected by the host). There is no build step — edit client/client.js and reload.

Support

Report bugs or request features via GitHub Issues.

Contributing

PRs are welcome. Keep changes surgical and run node --check on touched files; for server behavior changes, extend scratch/verify-lsp-support.mjs with end-to-end coverage.

License

MIT © CaesarEmperor