Productivity vs Xentropy Notes — Memory Layer for AI
Productivity is a plugin bundle for AI coding tools published by Anthropic. Marketplaces we read that list it: 1 (Claude: knowledge-work-plugins). Xentropy Notes — Memory Layer for AI is an MCP server published by xjpru. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-14. 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 | ||
|---|---|---|
| Claude: knowledge-work-plugins | Listed Version: 1.3.1 Forks (GitHub): 3 345 Stars (GitHub): 29 497 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed, marked deprecated Version: 0.3.1 Downloads/month (npm): 98 Downloads/week (npm): 18 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 | Productivity | Xentropy Notes — Memory Layer for AI |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 29 497 | No figure on GitHub |
| Forks (GitHub) (differs) | 3 345 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@xentropy/mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 3, secrets among them: 2 |
| Parts of the bundle (differs) | 13 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/anthropics/knowledge-work-plugins | github.com/xentropyai/client |
| 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
Productivity
Manage tasks, plan your day, and build up memory of important context about your work. Syncs with your calendar, email, and chat to keep everything organized and on track.
Xentropy Notes — Memory Layer for AI
Semantic search and knowledge graph for your Wall notes from Claude Code and MCP clients.
How to run each
Productivity As a Claude Code plugin
/plugin marketplace add anthropics/knowledge-work-plugins
/plugin install productivity@knowledge-work-pluginsXentropy Notes — Memory Layer for AI As a local MCP server: npm package
claude mcp add --env "XEN_API_TOKEN=<YOUR_XEN_API_TOKEN>" --env "XEN_REFRESH_TOKEN=<YOUR_XEN_REFRESH_TOKEN>" --transport stdio xentropy-notes -- npx -y @xentropy/mcpRequires: XEN_API_TOKEN (secret), XEN_REFRESH_TOKEN (secret)
Commands 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
The marketplaces of Productivity publish no settings it asks for, so we do not compare settings.
What it can do: Productivity · What it can do: Xentropy Notes — Memory Layer for AI · Compare two other plugins
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.