Mimir — Persistent Memory Engine vs io.github.tstockham96/engram
Mimir — Persistent Memory Engine is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑20.
Mimir — Persistent Memory Engine is an MCP server published by tcconnally. No marketplace we read lists it any more. io.github.tstockham96/engram is an MCP server published by tstockham96. Marketplaces we read that list it: 2 (Official MCP Registry, Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-27. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  io.github.tstockham96/engram | |
|---|---|---|
| Official MCP Registry | Removed on 2026-10-20 Version: 2.0.0 No figure published Not marked · First seen |
Listed Version: 0.5.1 Downloads/month (npm): 474 Downloads/week (npm): 109 Forks (GitHub): 6 Stars (GitHub): 47 Not marked · First seen |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 0 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 | Mimir — Persistent Memory Engineno longer listed · | io.github.tstockham96/engram |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 2 |
| Stars (GitHub) (differs) | No figure on GitHub | 47 |
| Forks (GitHub) (differs) | No figure on GitHub | 6 |
| Last release | Not published | Not published |
| Where it runs (differs) | Not stated | On your machine (engram-sdk) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 1 |
| Parts of the bundle (differs) | Not a bundle | 5 |
| Licence (differs) | Not stated | Proprietary |
| Repository (differs) | Not stated | github.com/tstockham96/engram |
| 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. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of Mimir — Persistent Memory Engine
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Mem0-compatible persistent memory for AI agents: write facts once, recall them semantically.
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memra com.usememra/memra
Persistent memory for AI agents. EU-hosted, privacy-first, hybrid recall, contradiction detection.
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memory com.humaux/memory
Persistent long-term memory for AI agents: semantic search, knowledge graph, and task canvas.
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Persistent memory for AI agents: connects MCP clients to your Kemory memory vault
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memdata io.github.thelabvenice/memdata
Persistent memory for AI agents. Store context, retrieve it semantically.
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mem0 io.github.mem0ai/mem0
Persistent memory for AI agents: add, search, update, and delete long-term memories.
What each says it does
Mimir — Persistent Memory Engine
Persistent memory for AI agents. 36+ MCP tools: encryption, decay, hybrid search, knowledge graph.
io.github.tstockham96/engram
Intelligent agent memory with automatic extraction, consolidation, and bi-temporal recall.
How to run each
Mimir — Persistent Memory Engine
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
io.github.tstockham96/engram As a local MCP server: npm package
claude mcp add --env "GEMINI_API_KEY=<YOUR_GEMINI_API_KEY>" --transport stdio engram -- npx -y engram-sdkRequires: GEMINI_API_KEY (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 Mimir — Persistent Memory Engine publish no settings it asks for, so we do not compare settings.
What it can do: Mimir — Persistent Memory Engine · What it can do: io.github.tstockham96/engram · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.