knowledge-mcp vs open-memex
knowledge-mcp is a plugin bundle for AI coding tools published by David Dunnock. Marketplaces we read that list it: 1 (Community GitHub marketplaces). open-memex is an MCP server published by stoneskin. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). As of our marketplace pass on 2026-10-24. 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 |  open-memex | |
|---|---|---|
| Community marketplace ddunnock/claude-plugins | Listed Version: 0.1.3 Forks (GitHub): 7 Stars (GitHub): 14 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.8.1 Downloads/month (npm): 9 606 Downloads/week (npm): 464 Forks (GitHub): 1 Stars (GitHub): 6 Not marked · First seen |
| npm registry (MCP servers) | Not listed | Listed Version: 0.8.1 Downloads/month (npm): 9 606 Downloads/week (npm): 464 Forks (GitHub): 1 Stars (GitHub): 6 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 | knowledge-mcp | open-memex |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 14 (better) | 6 (worse) |
| Forks (GitHub) (differs) | 7 (better) | 1 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (open-memex) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 4, secrets among them: 2 | Not published |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/ddunnock/claude-plugins | github.com/stoneskin/open-memex |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-15 | 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
knowledge-mcp
Semantic search over systems engineering standards (IEEE, INCOSE, ISO) with RAG capabilities for grounding specifications in engineering knowledge.
open-memex
Local-first memory for AI coding agents — Markdown + SQLite FTS5, shared across editors via MCP.
How to run each
knowledge-mcp As a Claude Code plugin
/plugin marketplace add ddunnock/claude-plugins
/plugin install knowledge-mcp@ddunnock-claude-pluginsopen-memex As a local MCP server: npm package
claude mcp add --transport stdio open-memex -- npx -y open-memex 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
The marketplaces of open-memex publish no settings it asks for, so we do not compare settings.
What it can do: knowledge-mcp · What it can do: open-memex · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.