MemPlato

Tech stack:Flutter (Android app) · Python 3.13 · FastAPI · SQLite · ONNX Runtime · MCP SSE · autossh

- 29 MCP tools— drawers, knowledge graph, diary, tunnels, semantic search
- Semantic searchwith local ONNX embeddings (all-MiniLM-L6-v2, runs offline)
- Knowledge graphwith temporal facts (valid_from / valid_to)
- Cross-wing tunnels— link related memory clusters
- Agent diary— per-agent journal entries
- Your data stays on your phone— 100% of your memories are stored locally on your device, never on external servers
- Auto-reconnect watchdog— tunnel restarts automatically if it drops
- English + Ukrainian UI

The APK is ~280 MB because it includes Python, all libraries, and the AI model — so setup on your phone requires no internet connection.

https://relay.memplato.com/u/YOUR_ID/mcp

- In Claude → Settings → Connectors → Add MCP server → paste your URL

Termux must stay running in the background (you'll see it in your notification bar). The watchdog script automatically restarts the tunnel if it drops. You don't need to do anything — just keep Termux open.

⚠️Known limitation:After rebooting your phone, the server does not restart automatically. Use theStartbutton in the app to restart it manually. Auto-start on boot will be added in a future update.

MemPlato v1.0.5 was tested with140+ test casescovering all 29 tools including edge cases, stress tests, and failure scenarios.

The server is stable and handles all edge cases without crashing. There are known limitations that will be addressed in the next major version:

- Embedding quality— The lightweight ONNX model (all-MiniLM-L6-v2) optimized for mobile occasionally produces unexpected similarity scores for unrelated texts. Search works reliably for standard use cases. Will be improved in v2 with a better model.
- Cross-lingual search— Ukrainian/English mixed queries sometimes return suboptimal ranking. For best results, use the same language as your stored content.
- Duplicate protection—add_drawerdoes not automatically callcheck_duplicate. Best practice: callcheck_duplicatemanually before saving.
- Search limit— Semantic search is optimized for queries returning up to 10 results. Requesting more may cause an error in some configurations.
- Auto-start after reboot— Auto-start after reboot — After rebooting your phone, use the Start button in the app to restart the server manually. Auto-start on boot will be added in a future update.

All known issues are cosmetic or edge-case. The core functionality — storing memories, knowledge graph, and MCP connectivity — works reliably.

Android Phone ├── MemPlato.apk (Flutter) │ ├── Manages setup flow │ ├── Copies all files to Termux │ └── Shows server status │ └── Termux (Linux environment) ├── memplato_server.py (FastAPI + MCP) │ ├── /sse ← MCP SSE endpoint │ ├── /mcp ← MCP HTTP endpoint │ └── /health ├── palace.db (SQLite) ├── models/onnx/ (384-dim embeddings) ├── autossh (reverse tunnel) └── tunnel_watchdog.sh (auto-restart) relay.memplato.com (Vultr VPS) └── nginx + relay.py └── Bridges AI clients to your phone └── No data stored

MemPlato requires Termux, which needs sideloading due to Android restrictions on terminal apps. The Google Play version of Termux is outdated and incompatible. This is a known limitation of the current MVP architecture.

The plan:After funding, MemPlato v2 will run without Termux — the server will be embedded directly into the app. No terminal setup, no manual steps. Straight to Google Play.

- MVP — Flutter app + Python server + MCP SSE
- All packages bundled in APK — no internet needed for setup
- Reverse SSH tunnel via relay
- 29 MCP tools
- English + Ukrainian localization
- v2 — server embedded in app, no Termux needed
- v2 — sync across multiple phones, computers and clouds
- Google Play release
- Better embedding model
- Manual server start/stop from the app
- Auto-start on phone boot

MemPlato is built by a solo founder. If you find it useful, you can support the project:

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