memoraeu-mcp

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English

Zero-knowledge persistent memory layer for Claude — MCP server

MemoraEU gives Claude a persistent, encrypted memory. All content is encrypted client-side with AES-256-GCM before reaching the server — the server never sees your plaintext. Semantic search is powered by Mistral embeddings generated locally on your machine, before encryption.

Features

• 🔒 Zero-knowledge — AES-256-GCM encryption, key never leaves your machine
• 🧠 Semantic search — embeddings generated locally before encryption (Qdrant on server)
• 🔄 Auto memory — remembers and recalls context automatically
• 🚫 Deduplication — detects near-duplicate memories before storing
• 🇪🇺 EU hosted — GDPR compliant infrastructure

Installation

pip install memoraeu-mcp

Or with uvx (no install required, recommended):

uvx memoraeu-mcp

Claude Desktop configuration

Add to your claude_desktop_config.json, under mcpServers:

{
  "mcpServers": {
    "memoraeu": {
      "command": "uvx",
      "args": ["memoraeu-mcp"],
      "env": {
        "MEMORAEU_API_URL": "https://api.memoraeu.com",
        "MEMORAEU_API_KEY": "meu-sk-...",
        "MEMORAEU_SECRET": "your-memoraeu-password",
        "MEMORAEU_SALT": "your-kdf-salt",
        "MISTRAL_API_KEY": "your-mistral-key"
      }
    }
  }
}

Understanding the variables

These five variables serve three distinct purposes — they are not interchangeable:

Why does the MCP need its own Mistral key?

Zero-knowledge means the server never sees your plaintext. To enable semantic search, embeddings must be computed before the content is encrypted — on your machine. The MCP calls Mistral directly with the plaintext, gets the embedding vector, encrypts the content, then sends both to the server. The server stores the opaque blob and the vector, but cannot reconstruct the original text. Without MISTRAL_API_KEY, semantic search will not work.

Without MISTRAL_API_KEY: The MCP will still work — remember and recall will function, but semantic search will fall back to keyword-based search on the server side. Zero-knowledge encryption is unaffected.

Getting your keys

1. Sign up at app.memoraeu.com
2. Go to Settings → Encryption Keys → copy MEMORAEU_SALT
3. MEMORAEU_SECRET is your MemoraEU login password
4. Go to Settings → API Keys → create a key → copy MEMORAEU_API_KEY
5. Get a Mistral API key at console.mistral.ai

Remote MCP via SSE (no local install)

You can connect directly from claude.ai web, Cursor, Windsurf or any remote MCP client without installing anything locally:

SSE endpoint: https://api.memoraeu.com/mcp/sse
Auth: Authorization: Bearer meu-sk-...

Example config for Cursor / Windsurf:

{
  "mcpServers": {
    "memoraeu": {
      "type": "sse",
      "url": "https://api.memoraeu.com/mcp/sse",
      "headers": {
        "Authorization": "Bearer meu-sk-..."
      }
    }
  }
}

Note: In SSE remote mode, content is not zero-knowledge encrypted (the server handles plaintext). Use the local stdio install for full zero-knowledge guarantees.

Available tools

Auto-memory behavior

The MCP server is designed to work without manual intervention:

Automatic recall — On the first user message of each session, recall is called automatically with the detected topic as query. Recent memories are also loaded via the memoraeu://context resource and injected as session context.

Automatic remember — When Claude detects a memorable piece of information (preference, decision, biographical fact, technical constraint), it calls remember autonomously without waiting to be asked. It confirms with a single discreet line.

System prompt injection — On the first recall call, the full behavior system prompt is injected into Claude's context, reinforcing the auto-memory rules for the rest of the session.

This behavior is encoded directly in the tool descriptions. Claude models follow these instructions as part of tool use — no additional configuration is required.

Deduplication & compression

Before storing a memory, the MCP checks for near-duplicates using vector similarity:

Long memories (> 300 characters) are compressed by Mistral before encryption, reducing token usage and improving search relevance. Compression happens in plaintext, before the content is encrypted — the server never sees the uncompressed original either.

Self-hosting

The API is open source. Deploy your own instance with Docker:

git clone https://github.com/pquattro/memoraEu
cd memoraEu
docker compose up -d

Français

Couche mémoire persistante zero-knowledge pour Claude — serveur MCP

MemoraEU donne à Claude une mémoire persistante et chiffrée. Tout le contenu est chiffré côté client en AES-256-GCM avant d'atteindre le serveur — le serveur ne voit jamais le texte en clair. La recherche sémantique repose sur des embeddings Mistral générés localement, avant chiffrement.

Fonctionnalités

• 🔒 Zero-knowledge — chiffrement AES-256-GCM, la clé ne quitte jamais votre machine
• 🧠 Recherche sémantique — embeddings générés localement avant chiffrement (Qdrant côté serveur)
• 🔄 Mémoire automatique — mémorise et rappelle le contexte sans intervention
• 🚫 Déduplication — détecte les doublons avant stockage
• 🇪🇺 Hébergé en Europe — infrastructure conforme RGPD

Installation

pip install memoraeu-mcp

Ou avec uvx (sans installation, recommandé) :

uvx memoraeu-mcp

Configuration Claude Desktop

Ajoutez dans votre claude_desktop_config.json, section mcpServers :

{
  "mcpServers": {
    "memoraeu": {
      "command": "uvx",
      "args": ["memoraeu-mcp"],
      "env": {
        "MEMORAEU_API_URL": "https://api.memoraeu.com",
        "MEMORAEU_API_KEY": "meu-sk-...",
        "MEMORAEU_SECRET": "votre-mot-de-passe-memoraeu",
        "MEMORAEU_SALT": "votre-kdf-salt",
        "MISTRAL_API_KEY": "votre-clé-mistral"
      }
    }
  }
}

Rôle de chaque variable

Ces cinq variables ont trois rôles distincts — elles ne sont pas interchangeables :

Pourquoi le MCP a-t-il besoin d'une clé Mistral ?

Le zero-knowledge signifie que le serveur ne voit jamais votre texte en clair. Pour permettre la recherche sémantique, les embeddings doivent être calculés avant le chiffrement — sur votre machine. Le MCP appelle Mistral directement avec le texte clair, obtient le vecteur d'embedding, chiffre le contenu, puis envoie les deux au serveur. Le serveur stocke le blob opaque et le vecteur, mais ne peut pas reconstituer le texte original. Sans MISTRAL_API_KEY, la recherche sémantique ne fonctionnera pas.

Sans MISTRAL_API_KEY : Le MCP continue de fonctionner — remember et recall restent opérationnels, mais la recherche sémantique bascule sur une recherche par mots-clés côté serveur. Le chiffrement zero-knowledge n'est pas affecté.

Obtenir vos clés

1. Créez un compte sur app.memoraeu.com
2. Allez dans Paramètres → Clés de chiffrement → copiez MEMORAEU_SALT
3. MEMORAEU_SECRET est votre mot de passe de connexion MemoraEU
4. Allez dans Paramètres → Clés API → créez une clé → copiez MEMORAEU_API_KEY
5. Obtenez une clé Mistral sur console.mistral.ai