security-guidance vs epic-harness
security-guidance is a plugin bundle for AI coding tools published by Anthropic. Marketplaces we read that list it: 2 (Claude Code: claude-plugins-official, Claude: knowledge-work-plugins). epic-harness is a plugin bundle for AI coding tools published by epicsagas. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-19. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  security-guidance |  epic-harness |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 2.0.14 Forks (GitHub): 4 462 Stars (GitHub): 41 694 Not marked · First seen |
Not listed |
| Claude: knowledge-work-plugins | Listed Version: 2.0.13 Forks (GitHub): 4 462 Stars (GitHub): 41 694 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 0.8.2 Forks (GitHub): 5 Stars (GitHub): 19 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | security-guidance | epic-harness |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 41 694 (better) | 19 (worse) |
| Forks (GitHub) (differs) | 4 462 (better) | 5 (worse) |
| Last release (differs) | 2026-10-16 | Not published |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | 11 | Not published |
| Parts of the bundle (differs) | 4 | 27 |
| Licence (differs) | Not stated | Apache-2.0 |
| Repository (differs) | github.com/anthropics/claude-plugins-official | github.com/epicsagas/epic-harness |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
security-guidance
Security review for Claude-generated code. Pattern-based warnings on edits, LLM-powered diff review on Stop, and an agentic commit reviewer that catches injection, XSS, SSRF, hardcoded secrets, and 25+ other vulnerability classes.
epic-harness
A Claude Code plugin that replaces 30+ commands with 6, auto-triggers skills based on what you're doing, and evolves new skills from your own failure patterns. Less surface area to memorize. More intelligence per keystroke.
How to run each
security-guidance As a Claude Code plugin
/plugin install security-guidance@claude-plugins-officialepic-harness As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install epic-harness@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: security-guidance · What it can do: epic-harness · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.