What plugins are available for Claude Cowork?

Anthropic open-sourced 11 plugins on January 30, 2026: Productivity, Enterprise Search, Plugin Create/Customize, Sales, Finance, Data Analysis, Legal, Marketing, Customer Support, Product Management, and Biology Research. A separate set of financial services plugins was released on February 24 covering equity research, investment banking, private equity, and wealth management. Additional partner plugins from companies like S&P Global and Brandwatch are also available through the plugin marketplace.

Are Claude Cowork plugins free?

Yes. The 11 official plugins are open source and free, available on GitHub under the anthropics/knowledge-work-plugins repository. You need a paid Claude subscription (Pro at $20/month or higher) to use Cowork itself, but there is no additional cost for plugins. Partner plugins that connect to third-party data providers like FactSet or S&P Global may require separate subscriptions to those services.

How do I install Claude Cowork plugins?

Open Claude Desktop, switch to Cowork mode, click Customize in the left sidebar, then browse or add plugins. You can install from Anthropic's official marketplace, add a GitHub repository as a marketplace source, or upload plugin files directly. Once installed, plugins activate automatically. Skills fire when relevant context appears, and slash commands become available in your session.

Can I create custom Claude Cowork plugins?

Yes. Plugins are file-based, built with markdown and JSON. No coding is required for basic plugins. The Plugin Create plugin (one of the 11 official plugins) walks you through building a new plugin from scratch inside Cowork. You can also customize any existing plugin by modifying its skill files, slash commands, and connector configurations to match your company's specific tools and processes.

Can I share Claude Cowork plugins with my team?

On Team and Enterprise plans, admins can create private plugin marketplaces connected to private GitHub repositories. Admins can set per-plugin installation preferences: auto-install for everyone, available for self-service, or hidden. On Pro and Max plans, plugins are saved locally to your machine. You can share plugin files manually, but there is no built-in sharing mechanism on individual plans.

Claude Cowork Plugins: Which Ones Are Worth Installing

On January 30, 2026, Anthropic open-sourced 11 plugins for Claude Cowork. On February 24, they added a separate set of financial services plugins, partner integrations, and an enterprise plugin management system. The plugin ecosystem went from nothing to fairly comprehensive in under a month.

The pitch is that plugins turn Claude from a general-purpose assistant into a role-specific agent. Install the sales plugin, and Cowork knows your CRM, your pipeline stages, and your call prep workflow. Install the legal plugin, and it reviews contracts with a clause-by-clause flagging system. Each plugin bundles domain knowledge, slash commands, connectors to external tools, and sub-agent configurations into a single package.

The reality is more nuanced. Some plugins deliver immediately out of the box. Others require meaningful customization before they're useful. And the value of any plugin depends entirely on whether you've connected it to the tools where your data actually lives. Here's the honest rundown.

How plugins work

Each plugin is a folder of files: markdown (for skills and domain knowledge), JSON (for connector configurations), and optional command definitions. No compiled code, no infrastructure, no build steps. When you install a plugin, Cowork reads the skill files and applies that knowledge automatically when the context is relevant. Slash commands become available for you to invoke explicitly.

You install plugins from within Cowork by clicking Customize in the left sidebar. You can browse Anthropic's official marketplace, add a GitHub repository as a source, or upload plugin files directly. Once installed, plugins activate automatically in your sessions.

The key thing to understand: plugins are starting points, not finished products. Anthropic built them generically. They become much more useful when you customize the skill files with your company's specific terminology, processes, and tool configurations. The Plugin Create/Customize plugin (more on that below) helps with this, but the customization step is what separates a plugin that feels like a demo from one that feels like a workflow.

The 11 official plugins

Here's what each one does and whether it's worth installing right now.

Productivity. Manages tasks, calendars, daily workflows, and personal context. Connects to Slack, Notion, Asana, Linear, Jira, Monday, ClickUp, and Microsoft 365. The /update command scans your connected tools and refreshes your task list. This is the most universally useful plugin because it doesn't require domain expertise to configure. If you connect it to the tools you actually use daily, it becomes the foundation for scheduled morning briefings and task triage. Install this first.

Enterprise Search. Searches across your company's connected tools and documents from one place. Useful for teams with scattered documentation across Google Drive, Notion, Confluence, and Slack. Less useful for individuals who already know where their files are. The value scales with team size and documentation sprawl.

Plugin Create/Customize. A meta-plugin that helps you build new plugins or customize existing ones from scratch. You describe what you want in natural language, and it generates the file structure. If you're planning to customize any of the other plugins for your company (and you should), install this one.

Sales. Connects to your CRM and knowledge base. Key commands include /call-prep for meeting preparation, prospect research, and deal follow-ups. The plugin is designed to pull recent CRM interactions, company news, competitive positioning, and closing suggestions into a single brief. The catch: it needs CRM connectivity to be useful, and as of March 2026, native CRM API connectors for Salesforce and HubSpot aren't in Cowork's public connector list. Browser-based CRM updates via Claude in Chrome are the current workaround. The plugin is worth installing if you do sales work, but expect to use the Chrome extension for the CRM push step.

Finance. Handles financial analysis, reconciliations, and reporting. Connects to spreadsheet data and can generate charts and variance analysis. The /reconciliation command is useful for routine accounting work. The February 24 update added a separate, more comprehensive set of financial services plugins covering equity research, investment banking, private equity, and wealth management, with connectors for Daloopa, Morningstar, S&P Global, FactSet, Moody's, PitchBook, and others. If you work in financial services, the specialized plugins are the ones to install. If you need basic financial analysis on spreadsheets, the standard finance plugin works.

Data Analysis. For analysts who write queries and build dashboards. Connects to data warehouses (Snowflake, BigQuery) and visualization tools. The /write-query command helps generate and validate SQL. If you regularly do data work and have warehouse access configured, this is genuinely useful. If your data lives in spreadsheets, the standard Cowork file access handles that without needing a plugin.

Legal. Reviews contracts with a GREEN/YELLOW/RED flagging system for clause-by-clause analysis. The /review-contract command uploads a PDF and produces flagged analysis with modification suggestions based on a configurable company playbook. The /triage-nda command does rapid NDA pre-screening. Anthropic explicitly advises against using this for regulated workloads given Cowork's research preview status, but for first-pass review and contract triage, it saves significant time. Install if you deal with contracts regularly, but don't treat the output as legal advice.

Marketing. Draft content, plan campaigns, manage launches. Connects to content calendars and campaign performance data. This is the plugin most likely to need heavy customization before it's useful, because marketing workflows vary enormously between companies. The generic version is a decent template. The customized version, loaded with your brand guidelines, tone, and channel strategy, is where the value lives.

Customer Support. For support teams handling high volumes of inquiries. Helps draft responses, categorize tickets, and surface relevant knowledge base articles. Most useful when connected to your ticketing system. Limited value as a standalone without those integrations.

Product Management. Covers specs, roadmaps, and stakeholder feedback. The /write-spec command generates product requirement documents. If you already use Cowork for document creation, this plugin adds structure to the output. Useful if you write a lot of PRDs or feature specs.

Biology Research. The most specialized plugin. Connects to PubMed, BioRender, bioRxiv, ClinicalTrials.gov, ChEMBL, and other life sciences databases. Designed for preclinical research workflows. Irrelevant if you're not in life sciences, excellent if you are.

The financial services plugins

Released separately on February 24 and installed from their own GitHub repository (anthropics/financial-services-plugins), these are deeper and more specialized than the standard finance plugin. They include a core financial analysis plugin that provides shared tools and data connectors, plus plugins for equity research, investment banking, private equity, and wealth management.

The core plugin connects to FactSet, Morningstar, S&P Global, Moody's, MT Newswires, Aiera, LSEG, PitchBook, Chronograph, and Egnyte. These connectors require separate subscriptions to the data providers themselves. The plugins are free, but the data they connect to is not.

If you work in finance and already subscribe to these data services, the financial services plugins are arguably the highest-value plugins available today. Having Claude pull live data from FactSet or PitchBook into a Cowork session and produce formatted analysis is a workflow that previously required manual data export, spreadsheet work, and presentation assembly.

Partner plugins

Beyond Anthropic's official plugins, partner-built plugins are starting to appear. Brandwatch has a marketing analytics plugin. S&P Global has a market intelligence plugin. These are available through the plugin marketplace and typically require accounts with the partner service.

The marketplace is still early. Expect this to grow significantly in the coming months as more partners build connectors.

What to install first

For most people, the priority order is:

Productivity - universally useful, connects to the broadest set of tools
Plugin Create/Customize - you'll need this to tailor other plugins
Whichever role-specific plugin matches your job - Sales, Legal, Finance, Data, Product, etc.

After installing, spend 15 minutes customizing the skill files. Add your company's terminology. Specify your tools by name. Describe your actual workflow rather than the generic one the plugin ships with. This customization step is the difference between a plugin that sometimes helps and one that consistently delivers.

The limitations worth knowing

Plugins are in research preview. Anthropic advises against using them for regulated workloads. Cowork sessions don't share memory, so a plugin's context resets between sessions (though global and folder instructions persist). On individual plans, plugins are stored locally with no built-in sharing. Team and Enterprise plans get private marketplaces and admin distribution controls.

The biggest practical limitation: plugins are only as useful as the connectors they're wired to. A sales plugin without CRM connectivity is a template. A data plugin without warehouse access is a SQL helper. The plugin system is architecturally sound, but the value is gated by how many of your actual tools you connect. The MCP connector ecosystem is growing fast, but there are still gaps, particularly around direct CRM API access.

For people whose work spans multiple tools, multiple channels, and requires AI to act without manual prompt engineering, plugins get you part of the way there. The rest depends on whether the connectors exist, whether you've done the customization work, and whether you're willing to manage the setup yourself. If that last part sounds like more overhead than you want, managed AI platforms that handle the integration layer are the alternative.

This is part of a series on AI agents in 2026. See also: How Much Does Claude Cowork Actually Cost?, Claude Cowork Scheduled Tasks, Claude Cowork vs OpenClaw, and Claude Cowork vs Copilot Cowork.