Zen vs Mackforge Harness Toolbox
Zen is an MCP server published by BeehiveInnovations. Marketplaces we read that list it: 1 (Docker MCP Catalog). Mackforge Harness Toolbox is a plugin bundle for AI coding tools published by Daniel Mack. Marketplaces we read that list it: 1 (Community GitHub marketplaces). As of our marketplace pass on 2026-10-18. 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 |  Zen | |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:02cbe1d325db Forks (GitHub): 1 034 Pulls (Docker Hub): 34 905 Stars (Docker Hub): 0 Stars (GitHub): 11 786 Not marked · First seen |
Not listed |
| Community marketplace dtiger1889-ops/claude-harness-toolbox | Not listed | Listed Version: 1.2.0 Forks (GitHub): 1 Stars (GitHub): 13 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 | Zen | Mackforge Harness Toolbox |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 11 786 (better) | 13 (worse) |
| Pulls (Docker Hub) (differs) | 34 905 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 1 034 (better) | 1 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (mcp/zen) | Installs as a plugin bundle |
| Transport (differs) | stdio | Not stated |
| Tools it declares (differs) | 18 | Not published |
| Environment variables it asks for (differs) | 4, secrets among them: 4 | Not published |
| Hooks it runs (differs) | Not published | 9 |
| Parts of the bundle (differs) | Not a bundle | 19 |
| Licence (differs) | NOASSERTION | MIT |
| Repository (differs) | github.com/beehiveinnovations/zen-mcp-server | github.com/dtiger1889-ops/claude-harness-toolbox |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-16 |
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
Zen
Bridges multiple AI models and CLIs, enabling orchestrated workflows across Claude Code, Gemini CLI, Codex CLI, and other AI development tools.
Mackforge Harness Toolbox
A tested harness for durable work across coding agents: CLAUDE.md/CHECKPOINT.md state files, an orientation gate, an interview-before-you-build gate and other hooks, and fourteen skills that encode the conventions so you never re-explain them.
How to run each
Zen As a local MCP server: Docker image
claude mcp add --env "GEMINI_API_KEY=<YOUR_GEMINI_API_KEY>" --env "OPENAI_API_KEY=<YOUR_OPENAI_API_KEY>" --env "OPENROUTER_API_KEY=<YOUR_OPENROUTER_API_KEY>" --env "XAI_API_KEY=<YOUR_XAI_API_KEY>" --transport stdio zen -- docker run -i --rm -e GEMINI_API_KEY -e OPENAI_API_KEY -e OPENROUTER_API_KEY -e XAI_API_KEY mcp/zenRequires: GEMINI_API_KEY (secret), OPENAI_API_KEY (secret), OPENROUTER_API_KEY (secret), XAI_API_KEY (secret)
Mackforge Harness Toolbox As a Claude Code plugin
/plugin marketplace add dtiger1889-ops/claude-harness-toolbox
/plugin install mackforge-harness-toolbox@harness-toolboxCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Mackforge Harness Toolbox publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of Mackforge Harness Toolbox publish no settings it asks for, so we do not compare settings.
What it can do: Zen · What it can do: Mackforge Harness Toolbox · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.