Anthropic open-sources knowledge-work plugins for Claude Cowork

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anthropicclaudemcpopen-source
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Originally from github.com
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Summary

Anthropic open-sourced 11 role-specific plugins that turn Claude (Cowork and Claude Code) into a specialist for jobs like sales, finance, product, marketing, legal, support and data analysis. Each plugin bundles skills, MCP connectors, slash commands and sub-agents into a file-based package (markdown + JSON, no code). They are generic starting points meant to be forked and customized with a company’s own tools, terminology and workflows.

Key Insight

  • Plugin anatomy is dead simple and copyable: .claude-plugin/plugin.json (manifest), .mcp.json (tool connections), commands/ (explicit slash commands), skills/ (auto-firing domain knowledge). Every component is markdown/JSON, no code, no build step, no infra.
  • Division of labour worth internalizing: Skills = domain expertise Claude pulls in automatically when relevant; Commands = explicit actions you trigger (e.g. /finance:reconciliation, /sales:call-prep); Connectors = MCP servers wiring Claude to CRMs/trackers/warehouses.
  • The 11 plugins and their pre-wired connector stacks signal where Anthropic sees the integration ecosystem: Slack, Notion, Asana, Linear, Jira, Monday, ClickUp, Microsoft 365, HubSpot, Close, Clay, ZoomInfo, Fireflies, Intercom, Guru, Box, Egnyte, Figma, Canva, Amplitude, Pendo, Ahrefs, SimilarWeb, Klaviyo, Snowflake, Databricks, BigQuery, Hex, plus life-sciences DBs (PubMed, bioRxiv, ChEMBL, Open Targets, Benchling).
  • The real value is customization, not the defaults: swap connectors in .mcp.json to point at your stack, drop company terminology/org structure/processes into skill files, and adjust workflow instructions to match how the team actually works.
  • There is a meta cowork-plugin-management plugin specifically for creating or customizing plugins, Anthropic is treating plugin-authoring as a first-class workflow.
  • Distribution model is GitHub-native: plugins are just markdown files, so you fork, edit, and submit a PR. Install via a marketplace add + per-plugin install.