open-memex vs HackMD
open-memex is an MCP server published by stoneskin. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). HackMD is an MCP server published by yuna0x0. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-05. 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 |  HackMD |
|---|---|---|
| Official MCP Registry | Listed Version: 0.8.1 Downloads/month (npm): 3 458 Downloads/week (npm): 1 041 Forks (GitHub): 1 Stars (GitHub): 6 Not marked · First seen |
Listed Version: 1.5.7 Downloads/month (npm): 499 Downloads/week (npm): 240 Forks (GitHub): 16 Stars (GitHub): 67 Not marked · First seen |
| npm registry (MCP servers) | Listed Version: 0.8.2 Downloads/month (npm): 3 458 Downloads/week (npm): 1 041 Forks (GitHub): 1 Stars (GitHub): 6 Not marked · First seen |
Not listed |
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 | open-memex | HackMD |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 6 (worse) | 67 (better) |
| Forks (GitHub) (differs) | 1 (worse) | 16 (better) |
| Last release (differs) | 2026-10-29 | Not published |
| Where it runs (differs) | On your machine (open-memex) | Remote server or your machine |
| Transport (differs) | stdio | stdio, Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 2, secrets among them: 1 |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/stoneskin/open-memex | github.com/yuna0x0/hackmd-mcp |
| Changes in the last 7 days (differs) | 1 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Status out of date: last check 5 days ago returned HTTP 404 |
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
open-memex
Local-first memory for AI coding agents — Markdown + SQLite FTS5, shared across editors via MCP.
HackMD
A Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants.
How to run each
open-memex As a local MCP server: npm package
claude mcp add --transport stdio open-memex -- npx -y open-memex mcpHackMD As a local MCP server: npm package
claude mcp add --env "HACKMD_API_TOKEN=<YOUR_HACKMD_API_TOKEN>" --transport stdio hackmd-mcp -- npx -y hackmd-mcpRequires: HACKMD_API_TOKEN (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only HackMD has a remote endpoint we check. How we check endpoints
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: open-memex · What it can do: HackMD · Compare two other plugins
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.