growthbook vs agent-device
growthbook is a plugin bundle for AI coding tools published by growthbook. Marketplaces we read that list it: 2 (Claude Code: claude-plugins-official, Claude: knowledge-work-plugins). agent-device is an MCP server published by callstack. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-12. 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 |  growthbook |  agent-device |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 2.0.0 Forks (GitHub): 4 Stars (GitHub): 23 Not marked · First seen |
Not listed |
| Claude: knowledge-work-plugins | Listed Version: 2.0.0 Forks (GitHub): 4 Stars (GitHub): 23 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.21.27 Downloads/month (npm): 979 627 Downloads/week (npm): 291 005 Forks (GitHub): 333 Stars (GitHub): 4 986 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 | growthbook | agent-device |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 23 (worse) | 4 986 (better) |
| Forks (GitHub) (differs) | 4 (worse) | 333 (better) |
| Last release (differs) | Not published | 2026-10-12 |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (agent-device) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 4 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/growthbook/skills | github.com/callstack/agent-device |
| Changes in the last 7 days (differs) | 0 | 2 |
| 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
growthbook
A suite of agent skills for the full GrowthBook feature flag and experimentation lifecycle.
agent-device
MCP server for mobile app automation: verify, control, and debug iOS, Android, TV, and desktop apps
How to run each
growthbook As a Claude Code plugin
/plugin install growthbook@claude-plugins-officialagent-device As a local MCP server: npm package
claude mcp add --transport stdio agent-device -- npx -y agent-device mcpCommands 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: growthbook · What it can do: agent-device · 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 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.