harness-engineering vs harness-architect
harness-engineering is a plugin bundle for AI coding tools published by huangbaixun. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). harness-architect is a plugin bundle for AI coding tools published by leee880619-commits. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-21. 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 |  harness-engineering |  harness-architect |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 2.0.0 Forks (GitHub): 1 Stars (GitHub): 3 Not marked · First seen |
Listed Version: 1.0.6 Forks (GitHub): 1 Stars (GitHub): 3 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 | harness-engineering | harness-architect |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) | 3 | 3 |
| Forks (GitHub) | 1 | 1 |
| Last release | Not published | 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) | 6 | 1 |
| Parts of the bundle (differs) | 37 | 17 |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/huangbaixun/harness-engineering | github.com/leee880619-commits/claudecode-harness-setup-assistant |
| Changes in the last 7 days | 0 | 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
harness-engineering
AI Agent Harness Engineering: bootstrap, audit, and evolve a reliable 6-layer agent harness for any project. Generates AGENTS.md, hooks (type-check, .env protection, auto-format), architecture docs, and sprint planning tools. Supports Claude Code and CodeBuddy. Works with TypeScript, Python, Go, Java, and generic stacks.
harness-architect
harness-architect is a meta-tool that scans any target project and builds an end-to-end Claude Code harness — CLAUDE.md, settings, rules, agents, playbooks, hooks, and MCP — through a 9-phase orchestrated workflow. The plugin enforces a strict Agent-Playbook separation (WHO / HOW): agents define identity and hand off methodology to sub-agent-only playbooks, preventing the main session from bypassing guardrails. Every phase is reviewed by an independent red-team advisor that produces BLOCK / ASK / NOTE classifications, and cross-phase state is persisted to `docs/{request}/` so interrupted sessions resume deterministically. Target users: anyone — including non-developers — who wants a correct-from-day-one Claude Code setup on every new project without re-deriving the same 30-decision matrix each time. The plugin ships a 6-step "strict-coding" preset for complex coding projects and three Phase 1-2 branches (fresh setup / Cursor migration / harness audit).
How to run each
harness-engineering As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install harness-engineering@claude-communityharness-architect As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install harness-architect@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: harness-engineering · What it can do: harness-architect · Compare two other plugins
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.