Harness Hub
All open source

Open sourcePython · ≈34k stars · Apache-2.0

Knowledge Work Plugins

Anthropic's official plugins for knowledge workers.

anthropics/knowledge-work-plugins

Maintained by anthropics

Vertical Agents

Open-source plugins from Anthropic for knowledge workers, built mainly for Claude Cowork and also usable in Claude Code.

View on GitHub

Pros & cons

Each point cites its sources and says what kind of evidence backs it. A second reviewer tried to refute every claim before it was kept.

Pros

  • DocsAnthropic open-sourced 11 role plugins (e.g. sales, finance, data, product management) bundling skills, commands and connectors.[1]
  • DocsComponents are file-based Markdown and JSON, so teams can fork and customize them without a build step.[1]
  • MetadataApache-2.0, about 34k stars, and commits as of 2026-10-29.[1]

Cons

  • User reportsA Google Calendar MCP server it depended on was turned down, leaving the productivity plugin broken (still open).[1]
  • User reportsA built-in skill references a `set_scheduled_task` tool that does not exist.[1]
  • User reportsUsers have reported plugins disappearing and M365 connector auth errors.[1][2]
  • DocsIt is built for Claude Cowork with Claude Code as a compatible secondary target, and skills carry no stability labels.[1][2]
Best for
Non-engineering teams on Claude Cowork who want role-specific starting points to customize.
Watch out for
Check that each plugin's connectors still exist and authenticate in your tenant before rolling it out.

Assessed Oct 29, 2026 · adversarially reviewedSuggest a correction

Neighbours on the workbench

Python · ≈66k stars · MIT

last30days

mvanhorn/last30days-skill

Researches the last 30 days of any topic across Reddit, X, YouTube, HN and Polymarket.

Maintained by mvanhorn

4 pros · 4 cons

Python · ≈62k stars · MIT

Humanizer

blader/humanizer

An agent skill that strips signs of AI-generated writing from text.

Maintained by blader

4 pros · 4 cons

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OpenManus

FoundationAgents/OpenManus

Open, invite-free general-purpose agent from the MetaGPT team.

Maintained by FoundationAgents

3 pros · 4 cons

Connections

Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.

Maintained by · 1

  • anthropicsOrganisation

Built on · 1

Similar entries · 3

Sources

  1. GitHub repo

Verified Oct 29, 2026