harness-engineering vs io.github.codapult/guard
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). io.github.codapult/guard is an MCP server published by codapult. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-13. 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 |  io.github.codapult/guard |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 2.0.0 Forks (GitHub): 1 Stars (GitHub): 3 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.8.1 Downloads/month (npm): 2 338 Downloads/week (npm): 311 Forks (GitHub): 0 Stars (GitHub): 0 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 | io.github.codapult/guard |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 3 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 1 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-12 |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@codapult/guard) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | 6 | Not published |
| Parts of the bundle (differs) | 37 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/huangbaixun/harness-engineering | github.com/codapult/codapult-guard |
| Changes in the last 7 days (differs) | 0 | 1 |
| 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.
io.github.codapult/guard
Local-first architecture guardrails and project context for JS/TS AI coding agents.
How to run each
harness-engineering As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install harness-engineering@claude-communityio.github.codapult/guard As a local MCP server: npm package
claude mcp add --transport stdio guard -- npx -y @codapult/guardCommands 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: io.github.codapult/guard · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.