If you’re looking for a fixed “Claude Cowork plugins list,” the honest answer is that the plugin ecosystem is evolving, so a frozen list would go stale fast. What we can do is explain how plugins extend Cowork’s agentic execution, what a plugin actually contains, and which marketplaces are built in. For the deeper mechanics, see our Skills, agents & plugins guide; for Cowork itself, the Cowork overview and Cowork hub.
- How plugins extend Cowork
- What’s inside a plugin
- Built-in marketplaces
- Connectors can read and act
- Why we don’t publish a fixed list
- Sources
How plugins extend Cowork
Cowork’s job is to execute multi-step knowledge work: build the deck, the spreadsheet, the document, the research write-up. Plugins widen what it can reach for and act on while doing that. Rather than being locked to a fixed set of abilities, the agent can draw on packaged extensions that add domain know-how, connect to the tools where your work lives, and hand off pieces of a job to specialised helpers. The result is an agent that adapts to the kind of work you do.
- Plugins bundle Skills, Connectors, and Sub-agents
- You install plugins from Customize → Plugins → Browse plugins; built-in marketplaces cover Knowledge Work, Life Sciences, Financial Services, Legal
- Connectors can read and take actions, not just read
What’s inside a plugin
A plugin is a bundle. Rather than being one narrow add-on, a single plugin can package several kinds of capability together:
- Skills — packaged know-how and procedures that teach the agent how to do a particular kind of task well.
- Connectors — links to external tools and data sources, which can both read information and take actions in those systems.
- Sub-agents — specialised helpers the main agent can delegate parts of a task to.
Because these come bundled, installing one plugin can add several related abilities at once. Our Skills, agents & plugins guide breaks each building block down in more detail.
Built-in marketplaces
Plugins are discovered through marketplaces, and a few come built in. The Knowledge Work marketplace is the default and covers general-purpose knowledge tasks. Alongside it are domain-focused marketplaces for Life Sciences, Financial Services and Legal, aimed at the tools and workflows those fields rely on. These give you curated starting points rather than requiring you to assemble everything from scratch.
| Built-in marketplace | Focus |
|---|---|
| Knowledge Work (default) | General-purpose knowledge-work tasks |
| Life Sciences | Life-sciences tools and workflows |
| Financial Services | Finance-oriented tools and workflows |
| Legal | Legal-oriented tools and workflows |
Connectors can read and act
It is worth calling out one detail, because it shapes what Cowork can do. Connectors are not read-only. As well as pulling information in from external systems, a connector can take actions in them. That is what lets an agentic tool move from “tell me about this” to “do this in the tool where the work lives.” As always with an agent that can act, be deliberate about what you connect and what permissions you grant, and review what it does.
Like the rest of Cowork, plugins are part of the paid Claude plans — Pro, Max, Team, and Enterprise — so you browse and use them once you’re signed in on one of those tiers. The domain marketplaces are aimed squarely at organisations, which is why Financial Services and Legal sit alongside the default Knowledge Work collection: they package the specialised skills and connectors those fields need rather than leaving you to assemble everything by hand.
Why we don’t publish a fixed list
You’ll notice this guide describes the ecosystem rather than naming specific plugins. That’s deliberate. The set of available plugins changes as new ones are added and existing ones evolve, so any hard-coded “top plugins” list would be out of date quickly and risks misleading you. Instead, browse the built-in marketplaces inside Cowork to see what’s currently available for your kind of work, and check the official sources below for the latest. The building blocks — Skills, Connectors, Sub-agents, and the marketplaces — are the stable part; the specific catalogue is the moving part.
c-ai.chat is an independent guide to Claude and is not affiliated with Anthropic. Claude Cowork is an official Anthropic product; use it inside the Claude apps at claude.ai.
Facts verified: 2026-07-14
