Initial commit: LangMem fact-based AI memory system with docs and MCP integration

- Complete fact-based memory API with mem0-inspired approach
- Individual fact extraction and deduplication
- ADD/UPDATE/DELETE memory actions
- Precision search with 0.86+ similarity scores
- MCP server for Claude Code integration
- Neo4j graph relationships and PostgreSQL vector storage
- Comprehensive documentation with architecture and API docs
- Matrix communication integration
- Production-ready Docker setup with Ollama and Supabase

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
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Docker Config Backup
2025-07-17 13:16:19 +02:00
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>API Documentation - LangMem Fact-Based Memory System</title>
<meta name="description" content="Complete API documentation for LangMem fact-based memory system with individual fact extraction, deduplication, memory updates, and precision search capabilities.">
<link rel="stylesheet" href="../assets/css/style.css">
<script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-core.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/plugins/autoloader/prism-autoloader.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism.css">
</head>
<body>
<header>
<nav>
<a href="../" class="logo">🧠 LangMem</a>
<ul class="nav-links">
<li><a href="../">Home</a></li>
<li><a href="../architecture/">Architecture</a></li>
<li><a href="../implementation/">Implementation</a></li>
<li><a href="../api/">API Docs</a></li>
</ul>
</nav>
</header>
<main>
<section class="hero">
<h1>LangMem API Documentation</h1>
<p>Complete reference for the fact-based LangMem API with individual fact extraction, intelligent deduplication, memory updates, and precision search (0.86+ similarity scores).</p>
</section>
<section class="mb-4">
<h2>Base URL & Authentication</h2>
<div class="card">
<h3>🔗 Base URL</h3>
<div class="code-block">
<pre><code>http://localhost:8765</code></pre>
</div>
<h3>🔐 Authentication</h3>
<p>All API requests require Bearer token authentication:</p>
<div class="code-block">
<pre><code>Authorization: Bearer langmem_api_key_2025</code></pre>
</div>
</div>
</section>
<section class="mb-4">
<h2>Core Memory Endpoints</h2>
<div class="card">
<h3>📥 POST /v1/memories/store</h3>
<p>Store a memory with fact-based extraction, deduplication, and intelligent memory actions (ADD/UPDATE/DELETE)</p>
<h4>Request Body</h4>
<div class="code-block">
<pre><code class="language-json">{
"content": "Ondrej has a son named Cyril who is 8 years old and loves playing soccer. Cyril goes to elementary school in Prague.",
"user_id": "user123",
"session_id": "session1",
"metadata": {
"category": "family",
"importance": "high",
"privacy_level": "personal",
"tags": ["family", "son", "personal"]
}
}</code></pre>
</div>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"total_facts": 5,
"stored_facts": 5,
"status": "stored",
"approach": "fact_based_with_deduplication",
"facts": [
{
"action": "added",
"fact": "Ondrej's son, Cyril, is 8 years old.",
"id": "550e8400-e29b-41d4-a716-446655440001"
},
{
"action": "added",
"fact": "Cyril loves playing soccer.",
"id": "550e8400-e29b-41d4-a716-446655440002"
},
{
"action": "added",
"fact": "Cyril attends elementary school in Prague.",
"id": "550e8400-e29b-41d4-a716-446655440003"
}
],
"created_at": "2025-07-17T19:30:00Z"
}</code></pre>
</div>
<h4>cURL Example</h4>
<div class="code-block">
<pre><code class="language-bash">curl -X POST "http://localhost:8765/v1/memories/store" \
-H "Authorization: Bearer langmem_api_key_2025" \
-H "Content-Type: application/json" \
-d '{
"content": "John works for Google in California",
"user_id": "user123",
"metadata": {"category": "business"}
}'</code></pre>
</div>
</div>
<div class="card">
<h3>🔍 POST /v1/memories/search</h3>
<p>Search individual facts using precision vector search with 0.86+ similarity scores for specific queries</p>
<h4>Request Body</h4>
<div class="code-block">
<pre><code class="language-json">{
"query": "How old is Cyril?",
"user_id": "user123",
"limit": 10,
"threshold": 0.5,
"include_graph": true
}</code></pre>
</div>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"memories": [
{
"id": "550e8400-e29b-41d4-a716-446655440001",
"content": "Ondrej's son, Cyril, is 8 years old.",
"metadata": {
"type": "fact",
"extraction_method": "llm_fact_extraction",
"category": "family"
},
"user_id": "user123",
"session_id": "session1",
"similarity": 0.759,
"created_at": "2025-07-17T19:30:00Z",
"relationships": [
{
"entity1_name": "Ondrej",
"entity1_type": "Person",
"relationship": "IS_FATHER_OF",
"entity2_name": "Cyril",
"entity2_type": "Person",
"confidence": 0.9
}
]
},
{
"id": "550e8400-e29b-41d4-a716-446655440004",
"content": "Cyril is currently 9 years old.",
"metadata": {
"type": "fact",
"extraction_method": "llm_fact_extraction"
},
"similarity": 0.913
}
],
"context": {
"query": "How old is Cyril?",
"user_id": "user123",
"threshold": 0.5,
"search_type": "fact_based_hybrid",
"approach": "fact_based_with_deduplication"
},
"total_count": 2
}</code></pre>
</div>
<h4>cURL Example</h4>
<div class="code-block">
<pre><code class="language-bash">curl -X POST "http://localhost:8765/v1/memories/search" \
-H "Authorization: Bearer langmem_api_key_2025" \
-H "Content-Type: application/json" \
-d '{
"query": "Where does John work?",
"user_id": "user123",
"limit": 5,
"threshold": 0.5,
"include_graph": true
}'</code></pre>
</div>
</div>
<div class="card">
<h3>🧠 POST /v1/memories/retrieve</h3>
<p>Retrieve relevant memories for conversation context</p>
<h4>Request Body</h4>
<div class="code-block">
<pre><code class="language-json">{
"messages": [
{
"role": "user",
"content": "Tell me about my family"
},
{
"role": "assistant",
"content": "I'd be happy to help with family information. What would you like to know?"
},
{
"role": "user",
"content": "Who are my children?"
}
],
"user_id": "user123",
"session_id": "session1"
}</code></pre>
</div>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"memories": [
{
"id": "550e8400-e29b-41d4-a716-446655440000",
"content": "Ondrej has a son named Cyril who is 8 years old",
"similarity": 0.745,
"relationships": [
{
"entity_name": "Cyril",
"entity_type": "Person",
"relationship": "HAS_SON",
"confidence": 1.0
}
]
}
],
"context": {
"session_id": "session1",
"message_count": 3,
"user_context": {},
"retrieved_at": "2025-07-16T19:30:00Z"
},
"total_count": 1
}</code></pre>
</div>
</div>
<div class="card">
<h3>👤 GET /v1/memories/users/{user_id}</h3>
<p>Get all memories for a specific user</p>
<h4>Query Parameters</h4>
<div class="table-container">
<table>
<thead>
<tr>
<th>Parameter</th>
<th>Type</th>
<th>Default</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>limit</td>
<td>integer</td>
<td>50</td>
<td>Maximum number of memories to return</td>
</tr>
<tr>
<td>offset</td>
<td>integer</td>
<td>0</td>
<td>Number of memories to skip</td>
</tr>
</tbody>
</table>
</div>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"memories": [
{
"id": "550e8400-e29b-41d4-a716-446655440000",
"content": "Ondrej has a son named Cyril who is 8 years old",
"metadata": {
"category": "family",
"importance": "high"
},
"user_id": "user123",
"session_id": "session1",
"created_at": "2025-07-16T19:30:00Z",
"updated_at": "2025-07-16T19:30:00Z"
}
],
"total_count": 1,
"limit": 50,
"offset": 0
}</code></pre>
</div>
<h4>cURL Example</h4>
<div class="code-block">
<pre><code class="language-bash">curl -X GET "http://localhost:8765/v1/memories/users/user123?limit=10&offset=0" \
-H "Authorization: Bearer langmem_api_key_2025"</code></pre>
</div>
</div>
<div class="card">
<h3>🗑️ DELETE /v1/memories/{memory_id}</h3>
<p>Delete a specific memory and its graph relationships</p>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"status": "deleted",
"id": "550e8400-e29b-41d4-a716-446655440000"
}</code></pre>
</div>
<h4>cURL Example</h4>
<div class="code-block">
<pre><code class="language-bash">curl -X DELETE "http://localhost:8765/v1/memories/550e8400-e29b-41d4-a716-446655440000" \
-H "Authorization: Bearer langmem_api_key_2025"</code></pre>
</div>
</div>
</section>
<section class="mb-4">
<h2>System Endpoints</h2>
<div class="card">
<h3>🏠 GET /</h3>
<p>Root endpoint with system information</p>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"message": "LangMem API - Long-term Memory System",
"version": "1.0.0",
"status": "running"
}</code></pre>
</div>
</div>
<div class="card">
<h3>❤️ GET /health</h3>
<p>Health check with service status</p>
<h4>Response</h4>
<div class="code-block">
<pre><code class="language-json">{
"status": "healthy",
"services": {
"ollama": "healthy",
"supabase": "healthy",
"neo4j": "healthy",
"postgres": "healthy"
},
"timestamp": "2025-07-16T19:30:00Z"
}</code></pre>
</div>
<h4>cURL Example</h4>
<div class="code-block">
<pre><code class="language-bash">curl -X GET "http://localhost:8765/health"</code></pre>
</div>
</div>
</section>
<section class="mb-4">
<h2>AI Relationship Extraction</h2>
<div class="card">
<h3>🤖 Automatic Relationship Extraction</h3>
<p>LangMem automatically extracts relationships from content using Llama3.2 model. Here are examples of relationship types that are dynamically generated:</p>
<h4>Relationship Types</h4>
<div class="table-container">
<table>
<thead>
<tr>
<th>Category</th>
<th>Example Relationships</th>
<th>Entity Types</th>
</tr>
</thead>
<tbody>
<tr>
<td>Family</td>
<td>IS_FATHER_OF, IS_SON_OF, IS_PARENT_OF</td>
<td>Person → Person</td>
</tr>
<tr>
<td>Business</td>
<td>FOUNDED, WORKS_FOR, EMPLOYED</td>
<td>Person → Organization</td>
</tr>
<tr>
<td>Technology</td>
<td>CREATED_BY, USES, DEVELOPED</td>
<td>Technology → Person</td>
</tr>
<tr>
<td>Geography</td>
<td>LOCATED_IN, DESIGNED</td>
<td>Location → Location</td>
</tr>
<tr>
<td>Science</td>
<td>REVOLUTIONIZED, WORKED_AT</td>
<td>Person → Concept</td>
</tr>
</tbody>
</table>
</div>
<h4>Example AI Extraction</h4>
<div class="code-block">
<pre><code class="language-json">{
"input": "Steve Jobs founded Apple Inc. in Cupertino, California",
"extracted_relationships": [
{
"entity1": "Steve Jobs",
"entity1_type": "Person",
"relationship": "FOUNDED",
"entity2": "Apple Inc.",
"entity2_type": "Organization",
"confidence": 0.9
},
{
"entity1": "Apple Inc.",
"entity1_type": "Organization",
"relationship": "LOCATED_IN",
"entity2": "Cupertino, California",
"entity2_type": "Location",
"confidence": 0.9
}
]
}</code></pre>
</div>
</div>
</section>
<section class="mb-4">
<h2>Error Handling</h2>
<div class="card">
<h3>🚨 Error Response Format</h3>
<div class="code-block">
<pre><code class="language-json">{
"detail": "Failed to store memory: Invalid content format"
}</code></pre>
</div>
<h4>Common Error Codes</h4>
<div class="table-container">
<table>
<thead>
<tr>
<th>HTTP Status</th>
<th>Description</th>
<th>Common Causes</th>
</tr>
</thead>
<tbody>
<tr>
<td>400</td>
<td>Bad Request</td>
<td>Invalid JSON, missing required fields</td>
</tr>
<tr>
<td>401</td>
<td>Unauthorized</td>
<td>Missing or invalid Bearer token</td>
</tr>
<tr>
<td>404</td>
<td>Not Found</td>
<td>Memory ID not found</td>
</tr>
<tr>
<td>500</td>
<td>Internal Server Error</td>
<td>Database connection, AI processing errors</td>
</tr>
</tbody>
</table>
</div>
</div>
</section>
<section class="mb-4">
<h2>Database Access</h2>
<div class="card">
<h3>🗄️ Direct Database Access</h3>
<p>For advanced users, direct database access is available:</p>
<h4>PostgreSQL (Vector Storage)</h4>
<div class="code-block">
<pre><code class="language-sql">-- Connect to PostgreSQL
psql "postgresql://postgres:CzkaYmRvc26Y@localhost:5435/postgres"
-- Query memories
SELECT id, content, user_id, metadata
FROM langmem_documents
WHERE user_id = 'user123'
ORDER BY created_at DESC;
-- Vector similarity search
SELECT id, content, 1 - (embedding <=> '[0.1, 0.2, ...]') as similarity
FROM langmem_documents
WHERE user_id = 'user123'
ORDER BY embedding <=> '[0.1, 0.2, ...]'
LIMIT 10;</code></pre>
</div>
<h4>Neo4j (Graph Relationships)</h4>
<div class="code-block">
<pre><code class="language-cypher">// Connect to Neo4j Browser: http://localhost:7474
// Username: neo4j, Password: langmem_neo4j_password
// View all relationships
MATCH (n)-[r]->(m) RETURN n, r, m LIMIT 25;
// Find specific relationship types
MATCH (p:Person)-[r:IS_FATHER_OF]->(c:Person)
RETURN p.name, r, c.name;
// Complex graph traversal
MATCH (p:Person)-[:FOUNDED]->(org:Organization)-[:LOCATED_IN]->(loc:Location)
RETURN p.name, org.name, loc.name;</code></pre>
</div>
</div>
</section>
<section class="mb-4">
<h2>Integration Examples</h2>
<div class="grid grid-2">
<div class="card">
<h3>🐍 Python Client</h3>
<div class="code-block">
<pre><code class="language-python">import requests
import json
class LangMemClient:
def __init__(self, base_url="http://localhost:8765", api_key="langmem_api_key_2025"):
self.base_url = base_url
self.headers = {
'Authorization': f'Bearer {api_key}',
'Content-Type': 'application/json'
}
def store_memory(self, content, user_id, session_id=None, metadata=None):
"""Store a memory with AI relationship extraction."""
data = {
'content': content,
'user_id': user_id,
'session_id': session_id,
'metadata': metadata or {}
}
response = requests.post(
f"{self.base_url}/v1/memories/store",
headers=self.headers,
json=data
)
return response.json()
def search_memories(self, query, user_id, limit=10, threshold=0.5):
"""Search memories with hybrid search."""
data = {
'query': query,
'user_id': user_id,
'limit': limit,
'threshold': threshold,
'include_graph': True
}
response = requests.post(
f"{self.base_url}/v1/memories/search",
headers=self.headers,
json=data
)
return response.json()
# Usage
client = LangMemClient()
# Store memory
result = client.store_memory(
content="John works for Google in California",
user_id="user123",
metadata={"category": "business"}
)
print(f"Memory stored: {result['id']}")
# Search memories
results = client.search_memories(
query="Where does John work?",
user_id="user123"
)
print(f"Found {results['total_count']} memories")
for memory in results['memories']:
print(f"- {memory['content']} (similarity: {memory['similarity']:.3f})")
if 'relationships' in memory:
for rel in memory['relationships']:
print(f" → {rel['relationship']} {rel['entity_name']}")</code></pre>
</div>
</div>
<div class="card">
<h3>🟨 JavaScript Client</h3>
<div class="code-block">
<pre><code class="language-javascript">class LangMemClient {
constructor(baseUrl = 'http://localhost:8765', apiKey = 'langmem_api_key_2025') {
this.baseUrl = baseUrl;
this.headers = {
'Authorization': `Bearer ${apiKey}`,
'Content-Type': 'application/json'
};
}
async storeMemory(content, userId, sessionId = null, metadata = {}) {
const response = await fetch(`${this.baseUrl}/v1/memories/store`, {
method: 'POST',
headers: this.headers,
body: JSON.stringify({
content,
user_id: userId,
session_id: sessionId,
metadata
})
});
return await response.json();
}
async searchMemories(query, userId, limit = 10, threshold = 0.5) {
const response = await fetch(`${this.baseUrl}/v1/memories/search`, {
method: 'POST',
headers: this.headers,
body: JSON.stringify({
query,
user_id: userId,
limit,
threshold,
include_graph: true
})
});
return await response.json();
}
}
// Usage
const client = new LangMemClient();
// Store memory
const result = await client.storeMemory(
'John works for Google in California',
'user123',
null,
{ category: 'business' }
);
console.log('Memory stored:', result.id);
// Search memories
const results = await client.searchMemories(
'Where does John work?',
'user123'
);
console.log(`Found ${results.total_count} memories`);
results.memories.forEach(memory => {
console.log(`- ${memory.content} (similarity: ${memory.similarity.toFixed(3)})`);
if (memory.relationships) {
memory.relationships.forEach(rel => {
console.log(` → ${rel.relationship} ${rel.entity_name}`);
});
}
});</code></pre>
</div>
</div>
</div>
</section>
<section class="text-center">
<h2>Ready to Build?</h2>
<p class="mb-3">Use the LangMem API to integrate AI-powered memory with automatic relationship extraction into your applications.</p>
<div class="cta-buttons">
<a href="../implementation/" class="btn btn-primary">📚 Implementation Guide</a>
<a href="../architecture/" class="btn btn-secondary">🏗️ Architecture Overview</a>
</div>
</section>
</main>
<footer style="text-align: center; padding: 2rem; margin-top: 4rem; color: var(--text-secondary);">
<p>&copy; 2025 LangMem Documentation. AI-Powered Memory System with Dynamic Relationship Extraction.</p>
<p>API Version: 1.0.0 - Production Ready</p>
</footer>
<script src="../assets/js/main.js"></script>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Architecture - LangMem Documentation</title>
<meta name="description" content="Detailed architecture documentation for LangMem showing system components, data flow, and integration patterns.">
<link rel="stylesheet" href="../assets/css/style.css">
<script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
</head>
<body>
<header>
<nav>
<a href="../" class="logo">🧠 LangMem</a>
<ul class="nav-links">
<li><a href="../">Home</a></li>
<li><a href="../architecture/">Architecture</a></li>
<li><a href="../implementation/">Implementation</a></li>
<li><a href="../api/">API Docs</a></li>
</ul>
</nav>
</header>
<main>
<section class="hero">
<h1>System Architecture</h1>
<p>Comprehensive overview of the LangMem system architecture, components, and data flow patterns.</p>
</section>
<section class="mb-4">
<h2>System Overview</h2>
<div class="diagram-container">
<div class="diagram-title">High-Level Architecture</div>
<div class="mermaid">
graph TB
subgraph "Client Applications"
A[n8n Workflows]
B[Claude Code CLI]
C[Custom Applications]
end
subgraph "API Gateway Layer"
D[Memory Service API]
E[Authentication Layer]
F[Rate Limiting]
end
subgraph "Core Processing Layer"
G[LangMem SDK]
H[Memory Manager]
I[Context Assembler]
J[Hybrid Retrieval Engine]
end
subgraph "Model Layer"
K[Ollama Local LLM]
L[Embedding Generator]
M[Entity Extractor]
end
subgraph "Storage Layer"
N[Supabase PostgreSQL]
O[pgvector Extension]
P[Neo4j Graph DB]
Q[Vector Indexes]
end
subgraph "Infrastructure"
R[Docker Network]
S[Container Orchestration]
T[Health Monitoring]
end
A --> D
B --> D
C --> D
D --> E
D --> F
D --> G
G --> H
G --> I
G --> J
J --> K
J --> L
J --> M
H --> N
H --> P
N --> O
N --> Q
R --> S
S --> T
style G fill:#2563eb,stroke:#1e40af,stroke-width:3px,color:#fff
style N fill:#22c55e,stroke:#16a34a,stroke-width:2px,color:#fff
style P fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#fff
style K fill:#8b5cf6,stroke:#7c3aed,stroke-width:2px,color:#fff
</div>
</div>
</section>
<section class="mb-4">
<h2>Data Flow Architecture</h2>
<div class="diagram-container">
<div class="diagram-title">Data Ingestion Flow</div>
<div class="mermaid">
sequenceDiagram
participant Client
participant API as Memory Service API
participant LM as LangMem SDK
participant OL as Ollama
participant SB as Supabase
participant N4J as Neo4j
Client->>API: POST /v1/ingest
API->>LM: Process Document
LM->>LM: Text Chunking
LM->>OL: Generate Embeddings
OL-->>LM: Vector Embeddings
LM->>SB: Store Chunks + Embeddings
SB-->>LM: Chunk IDs
LM->>OL: Extract Entities
OL-->>LM: Entity List
LM->>N4J: Store Graph Data
N4J-->>LM: Graph Node IDs
LM->>N4J: Link to Chunk IDs
LM-->>API: Ingestion Complete
API-->>Client: Success Response
</div>
</div>
</section>
<section class="mb-4">
<div class="diagram-container">
<div class="diagram-title">Data Retrieval Flow</div>
<div class="mermaid">
sequenceDiagram
participant Client
participant API as Memory Service API
participant LM as LangMem SDK
participant OL as Ollama
participant SB as Supabase
participant N4J as Neo4j
Client->>API: POST /v1/context/retrieve
API->>LM: Query Processing
LM->>OL: Generate Query Embedding
OL-->>LM: Query Vector
LM->>SB: Vector Similarity Search
SB-->>LM: Relevant Chunks
LM->>LM: Extract Entities from Chunks
LM->>N4J: Graph Traversal Query
N4J-->>LM: Related Entities/Facts
LM->>LM: Context Assembly
LM->>LM: Ranking & Filtering
LM-->>API: Augmented Context
API-->>Client: Context Response
</div>
</div>
</section>
<section class="mb-4">
<h2>Component Details</h2>
<div class="grid grid-2">
<div class="card">
<h3>🧠 LangMem SDK</h3>
<p><strong>Purpose:</strong> Core memory orchestration layer</p>
<p><strong>Key Features:</strong></p>
<ul>
<li>Storage-agnostic memory API</li>
<li>Active memory tools</li>
<li>Background memory management</li>
<li>LangGraph integration</li>
</ul>
<p><strong>Integration:</strong> Coordinates between vector and graph storage</p>
</div>
<div class="card">
<h3>🐘 Supabase + pgvector</h3>
<p><strong>Purpose:</strong> Vector storage and semantic search</p>
<p><strong>Key Features:</strong></p>
<ul>
<li>1536-dimensional embeddings</li>
<li>HNSW indexing for performance</li>
<li>Unified data + vector storage</li>
<li>SQL query capabilities</li>
</ul>
<p><strong>Scale:</strong> Handles 1.6M+ embeddings efficiently</p>
</div>
<div class="card">
<h3>🔗 Neo4j Graph Database</h3>
<p><strong>Purpose:</strong> Relationship storage and graph queries</p>
<p><strong>Key Features:</strong></p>
<ul>
<li>Entity relationship modeling</li>
<li>Graph traversal capabilities</li>
<li>Community detection algorithms</li>
<li>Cypher query language</li>
</ul>
<p><strong>Integration:</strong> Links to Supabase via chunk IDs</p>
</div>
<div class="card">
<h3>🦙 Ollama Local LLM</h3>
<p><strong>Purpose:</strong> Local model inference and embeddings</p>
<p><strong>Key Features:</strong></p>
<ul>
<li>Privacy-first local processing</li>
<li>OpenAI-compatible API</li>
<li>Multiple model support</li>
<li>Efficient quantization</li>
</ul>
<p><strong>Models:</strong> Llama 3.3, DeepSeek-R1, Phi-4, Gemma 3</p>
</div>
</div>
</section>
<section class="mb-4">
<h2>Docker Network Architecture</h2>
<div class="diagram-container">
<div class="diagram-title">Container Network Topology</div>
<div class="mermaid">
graph TB
subgraph "localai_network (Bridge)"
subgraph "Memory Stack"
A[memory_service:8000]
B[supabase:5432]
C[neo4j:7687]
D[ollama:11434]
end
subgraph "Existing Services"
E[n8n:5678]
F[Other Services]
end
end
subgraph "External Access"
G[Caddy Proxy]
H[docs.klas.chat]
end
A <--> B
A <--> C
A <--> D
A <--> E
G --> H
G --> A
style A fill:#2563eb,stroke:#1e40af,stroke-width:2px,color:#fff
style B fill:#22c55e,stroke:#16a34a,stroke-width:2px,color:#fff
style C fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#fff
style D fill:#8b5cf6,stroke:#7c3aed,stroke-width:2px,color:#fff
</div>
</div>
</section>
<section class="mb-4">
<h2>Database Schema Design</h2>
<div class="grid grid-2">
<div class="card">
<h3>📊 Supabase Schema</h3>
<div class="code-block">
<pre><code>CREATE TABLE documents (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
content TEXT NOT NULL,
embedding VECTOR(1536),
metadata JSONB,
source_url TEXT,
created_at TIMESTAMP DEFAULT NOW(),
updated_at TIMESTAMP DEFAULT NOW()
);
CREATE INDEX ON documents
USING ivfflat (embedding vector_cosine_ops)
WITH (lists = 100);
CREATE INDEX ON documents
USING gin (metadata);</code></pre>
</div>
</div>
<div class="card">
<h3>🔗 Neo4j Schema</h3>
<div class="code-block">
<pre><code>// Node Types
CREATE (doc:DocumentChunk {
id: $uuid,
supabase_id: $supabase_id,
title: $title,
created_at: datetime()
})
CREATE (person:Person {
name: $name,
type: "person"
})
CREATE (concept:Concept {
name: $name,
type: "concept"
})
// Relationships
CREATE (doc)-[:MENTIONS]->(person)
CREATE (doc)-[:DISCUSSES]->(concept)
CREATE (person)-[:RELATED_TO]->(concept)</code></pre>
</div>
</div>
</div>
</section>
<section class="mb-4">
<h2>Security Architecture</h2>
<div class="diagram-container">
<div class="diagram-title">Security Layers</div>
<div class="mermaid">
graph TB
subgraph "External Layer"
A[Caddy Proxy]
B[TLS Termination]
C[Rate Limiting]
end
subgraph "API Layer"
D[Authentication]
E[Authorization]
F[Input Validation]
end
subgraph "Application Layer"
G[MCP Resource Indicators]
H[API Key Management]
I[Session Management]
end
subgraph "Network Layer"
J[Docker Network Isolation]
K[Container Security]
L[Port Restrictions]
end
subgraph "Data Layer"
M[Database Authentication]
N[Encryption at Rest]
O[Backup Security]
end
A --> D
B --> D
C --> D
D --> G
E --> G
F --> G
G --> J
H --> J
I --> J
J --> M
K --> M
L --> M
style A fill:#ef4444,stroke:#dc2626,stroke-width:2px,color:#fff
style D fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#fff
style G fill:#22c55e,stroke:#16a34a,stroke-width:2px,color:#fff
style J fill:#2563eb,stroke:#1e40af,stroke-width:2px,color:#fff
style M fill:#8b5cf6,stroke:#7c3aed,stroke-width:2px,color:#fff
</div>
</div>
</section>
<section class="mb-4">
<h2>Performance Considerations</h2>
<div class="grid grid-3">
<div class="card">
<h3>⚡ Vector Search</h3>
<ul>
<li>HNSW indexing for sub-second search</li>
<li>Dimension optimization (1536)</li>
<li>Batch processing for bulk operations</li>
<li>Query result caching</li>
</ul>
</div>
<div class="card">
<h3>🔍 Graph Queries</h3>
<ul>
<li>Property and relationship indexing</li>
<li>Cypher query optimization</li>
<li>Limited traversal depth</li>
<li>Result set pagination</li>
</ul>
</div>
<div class="card">
<h3>🦙 Model Inference</h3>
<ul>
<li>Model quantization strategies</li>
<li>Embedding batch processing</li>
<li>Local GPU acceleration</li>
<li>Response caching</li>
</ul>
</div>
</div>
</section>
<section class="mb-4">
<h2>Scalability Patterns</h2>
<div class="diagram-container">
<div class="diagram-title">Scaling Strategy</div>
<div class="mermaid">
graph LR
subgraph "Current (Local)"
A[Single Node] --> B[Docker Compose]
B --> C[Local Resources]
end
subgraph "Stage 1 (Optimized)"
D[Resource Limits] --> E[Connection Pooling]
E --> F[Query Optimization]
end
subgraph "Stage 2 (Distributed)"
G[Load Balancer] --> H[Multiple API Instances]
H --> I[Shared Storage]
end
subgraph "Stage 3 (Cloud)"
J[Managed Services] --> K[Auto Scaling]
K --> L[Multi-Region]
end
C --> D
F --> G
I --> J
style A fill:#ef4444,stroke:#dc2626,stroke-width:2px,color:#fff
style D fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#fff
style G fill:#22c55e,stroke:#16a34a,stroke-width:2px,color:#fff
style J fill:#2563eb,stroke:#1e40af,stroke-width:2px,color:#fff
</div>
</div>
</section>
<section class="text-center">
<h2>Next Steps</h2>
<p class="mb-3">Ready to implement this architecture? Follow our detailed implementation guide.</p>
<div class="cta-buttons">
<a href="../implementation/" class="btn btn-primary">📚 Implementation Guide</a>
<a href="../api/" class="btn btn-secondary">📡 API Documentation</a>
</div>
</section>
</main>
<footer style="text-align: center; padding: 2rem; margin-top: 4rem; color: var(--text-secondary);">
<p>&copy; 2025 LangMem Documentation. Built with modern web technologies.</p>
</footer>
<script src="../assets/js/main.js"></script>
</body>
</html>

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/* LangMem Documentation Styles */
:root {
--primary-color: #2563eb;
--secondary-color: #64748b;
--accent-color: #06b6d4;
--background-color: #f8fafc;
--text-primary: #1e293b;
--text-secondary: #64748b;
--border-color: #e2e8f0;
--code-bg: #f1f5f9;
--success-color: #22c55e;
--warning-color: #f59e0b;
--error-color: #ef4444;
--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
line-height: 1.6;
color: var(--text-primary);
background-color: var(--background-color);
font-size: 16px;
}
/* Header */
header {
background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
color: white;
padding: 1rem 0;
box-shadow: var(--shadow-md);
position: fixed;
top: 0;
width: 100%;
z-index: 1000;
}
nav {
max-width: 1200px;
margin: 0 auto;
padding: 0 2rem;
display: flex;
justify-content: space-between;
align-items: center;
}
.logo {
font-size: 1.5rem;
font-weight: bold;
text-decoration: none;
color: white;
}
.nav-links {
display: flex;
list-style: none;
gap: 2rem;
}
.nav-links a {
color: white;
text-decoration: none;
padding: 0.5rem 1rem;
border-radius: 0.5rem;
transition: background-color 0.3s ease;
}
.nav-links a:hover {
background-color: rgba(255, 255, 255, 0.1);
}
/* Main Content */
main {
margin-top: 80px;
max-width: 1200px;
margin-left: auto;
margin-right: auto;
padding: 2rem;
}
/* Hero Section */
.hero {
text-align: center;
padding: 4rem 0;
background: linear-gradient(135deg, #f8fafc, #e2e8f0);
border-radius: 1rem;
margin-bottom: 3rem;
box-shadow: var(--shadow-sm);
}
.hero h1 {
font-size: 3rem;
margin-bottom: 1rem;
color: var(--primary-color);
}
.hero p {
font-size: 1.2rem;
color: var(--text-secondary);
max-width: 600px;
margin: 0 auto 2rem;
}
.cta-buttons {
display: flex;
gap: 1rem;
justify-content: center;
flex-wrap: wrap;
}
.btn {
padding: 0.75rem 1.5rem;
border: none;
border-radius: 0.5rem;
font-weight: 500;
text-decoration: none;
transition: all 0.3s ease;
cursor: pointer;
display: inline-flex;
align-items: center;
gap: 0.5rem;
}
.btn-primary {
background-color: var(--primary-color);
color: white;
}
.btn-primary:hover {
background-color: #1d4ed8;
transform: translateY(-2px);
box-shadow: var(--shadow-md);
}
.btn-secondary {
background-color: white;
color: var(--primary-color);
border: 2px solid var(--primary-color);
}
.btn-secondary:hover {
background-color: var(--primary-color);
color: white;
}
/* Grid Layout */
.grid {
display: grid;
gap: 2rem;
margin-bottom: 3rem;
}
.grid-2 {
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.grid-3 {
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
/* Cards */
.card {
background: white;
border-radius: 1rem;
padding: 2rem;
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
transition: all 0.3s ease;
}
.card:hover {
transform: translateY(-5px);
box-shadow: var(--shadow-lg);
}
.card h3 {
color: var(--primary-color);
margin-bottom: 1rem;
font-size: 1.25rem;
}
.card-icon {
width: 48px;
height: 48px;
margin-bottom: 1rem;
color: var(--primary-color);
}
/* Architecture Diagrams */
.diagram-container {
background: white;
border-radius: 1rem;
padding: 2rem;
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
margin-bottom: 2rem;
}
.diagram-title {
color: var(--primary-color);
margin-bottom: 1rem;
font-size: 1.25rem;
text-align: center;
}
/* Code Blocks */
.code-block {
background: var(--code-bg);
border-radius: 0.5rem;
padding: 1rem;
overflow-x: auto;
font-family: 'Monaco', 'Menlo', monospace;
font-size: 0.9rem;
margin: 1rem 0;
border: 1px solid var(--border-color);
}
pre {
margin: 0;
white-space: pre-wrap;
}
/* Phase Cards */
.phase-card {
background: white;
border-radius: 1rem;
padding: 2rem;
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
margin-bottom: 2rem;
position: relative;
}
.phase-card::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
height: 4px;
background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
border-radius: 1rem 1rem 0 0;
}
.phase-number {
display: inline-block;
background: var(--primary-color);
color: white;
padding: 0.5rem 1rem;
border-radius: 50%;
font-weight: bold;
margin-bottom: 1rem;
}
.phase-title {
color: var(--primary-color);
margin-bottom: 1rem;
font-size: 1.5rem;
}
.phase-timeline {
color: var(--text-secondary);
font-size: 0.9rem;
margin-bottom: 1rem;
}
/* Status Indicators */
.status {
display: inline-block;
padding: 0.25rem 0.75rem;
border-radius: 1rem;
font-size: 0.8rem;
font-weight: 500;
text-transform: uppercase;
letter-spacing: 0.5px;
}
.status-planning {
background: #fef3c7;
color: #92400e;
}
.status-in-progress {
background: #dbeafe;
color: #1e40af;
}
.status-completed {
background: #dcfce7;
color: #166534;
}
/* Tables */
.table-container {
background: white;
border-radius: 1rem;
overflow: hidden;
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
margin: 2rem 0;
}
table {
width: 100%;
border-collapse: collapse;
}
th, td {
padding: 1rem;
text-align: left;
border-bottom: 1px solid var(--border-color);
}
th {
background: var(--code-bg);
color: var(--text-primary);
font-weight: 600;
}
/* Responsive Design */
@media (max-width: 768px) {
.nav-links {
display: none;
}
.hero h1 {
font-size: 2rem;
}
.hero p {
font-size: 1rem;
}
.cta-buttons {
flex-direction: column;
align-items: center;
}
main {
padding: 1rem;
}
.grid-2, .grid-3 {
grid-template-columns: 1fr;
}
}
/* Animations */
@keyframes fadeIn {
from {
opacity: 0;
transform: translateY(20px);
}
to {
opacity: 1;
transform: translateY(0);
}
}
.fade-in {
animation: fadeIn 0.6s ease-out;
}
/* Utilities */
.text-center {
text-align: center;
}
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

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// LangMem Documentation JavaScript
document.addEventListener('DOMContentLoaded', function() {
// Initialize all components
initializeNavigation();
initializeAnimations();
initializeDiagrams();
initializeCodeBlocks();
initializeSmoothScroll();
initializeProgressTracking();
});
// Navigation functionality
function initializeNavigation() {
const currentPath = window.location.pathname;
const navLinks = document.querySelectorAll('.nav-links a');
navLinks.forEach(link => {
if (link.getAttribute('href') === currentPath) {
link.classList.add('active');
}
});
}
// Fade-in animations for cards
function initializeAnimations() {
const observerOptions = {
threshold: 0.1,
rootMargin: '0px 0px -100px 0px'
};
const observer = new IntersectionObserver((entries) => {
entries.forEach(entry => {
if (entry.isIntersecting) {
entry.target.classList.add('fade-in');
}
});
}, observerOptions);
document.querySelectorAll('.card, .phase-card, .diagram-container').forEach(el => {
observer.observe(el);
});
}
// Initialize Mermaid diagrams
function initializeDiagrams() {
if (typeof mermaid !== 'undefined') {
mermaid.initialize({
startOnLoad: true,
theme: 'default',
flowchart: {
useMaxWidth: true,
htmlLabels: true
},
securityLevel: 'loose'
});
}
}
// Code block enhancements
function initializeCodeBlocks() {
const codeBlocks = document.querySelectorAll('.code-block');
codeBlocks.forEach(block => {
// Add copy button
const copyBtn = document.createElement('button');
copyBtn.className = 'copy-btn';
copyBtn.innerHTML = '📋 Copy';
copyBtn.onclick = () => copyToClipboard(block.textContent, copyBtn);
const container = document.createElement('div');
container.className = 'code-container';
container.appendChild(copyBtn);
block.parentNode.insertBefore(container, block);
container.appendChild(block);
});
}
// Copy to clipboard functionality
function copyToClipboard(text, button) {
navigator.clipboard.writeText(text).then(() => {
const originalText = button.innerHTML;
button.innerHTML = '✅ Copied!';
setTimeout(() => {
button.innerHTML = originalText;
}, 2000);
});
}
// Smooth scrolling for anchor links
function initializeSmoothScroll() {
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
anchor.addEventListener('click', function (e) {
e.preventDefault();
const target = document.querySelector(this.getAttribute('href'));
if (target) {
target.scrollIntoView({
behavior: 'smooth',
block: 'start'
});
}
});
});
}
// Progress tracking for implementation phases
function initializeProgressTracking() {
const phaseCards = document.querySelectorAll('.phase-card');
const progressBar = document.querySelector('.progress-bar');
if (progressBar && phaseCards.length > 0) {
updateProgressBar();
}
}
function updateProgressBar() {
const totalPhases = document.querySelectorAll('.phase-card').length;
const completedPhases = document.querySelectorAll('.status-completed').length;
const progress = (completedPhases / totalPhases) * 100;
const progressBar = document.querySelector('.progress-fill');
if (progressBar) {
progressBar.style.width = `${progress}%`;
}
}
// Architecture diagram interactions
function showDiagramDetails(diagramId) {
const modal = document.getElementById('diagram-modal');
const content = document.getElementById('diagram-details');
const diagramDetails = {
'system-overview': {
title: 'System Architecture Overview',
description: 'This diagram shows the high-level architecture of the LangMem system, including the main components and their relationships.',
components: [
'LangMem SDK - Core memory management layer',
'Supabase - Vector storage with pgvector',
'Neo4j - Graph database for relationships',
'Ollama - Local LLM and embedding models',
'Docker Network - Container orchestration'
]
},
'data-flow': {
title: 'Data Flow Architecture',
description: 'Shows how data flows through the system during ingestion and retrieval operations.',
components: [
'Input Processing - Text chunking and preprocessing',
'Embedding Generation - Vector creation via Ollama',
'Storage Layer - Dual storage in Supabase and Neo4j',
'Retrieval Engine - Hybrid search capabilities',
'Context Assembly - Final context preparation'
]
}
};
const details = diagramDetails[diagramId];
if (details && modal && content) {
content.innerHTML = `
<h3>${details.title}</h3>
<p>${details.description}</p>
<ul>
${details.components.map(comp => `<li>${comp}</li>`).join('')}
</ul>
`;
modal.style.display = 'block';
}
}
function closeDiagramModal() {
const modal = document.getElementById('diagram-modal');
if (modal) {
modal.style.display = 'none';
}
}
// Search functionality
function initializeSearch() {
const searchInput = document.querySelector('.search-input');
const searchResults = document.querySelector('.search-results');
if (searchInput && searchResults) {
searchInput.addEventListener('input', debounce(performSearch, 300));
}
}
function performSearch(event) {
const query = event.target.value.toLowerCase();
const searchResults = document.querySelector('.search-results');
if (query.length < 2) {
searchResults.style.display = 'none';
return;
}
// Simple search implementation
const searchableElements = document.querySelectorAll('h1, h2, h3, p, li');
const results = [];
searchableElements.forEach(element => {
if (element.textContent.toLowerCase().includes(query)) {
results.push({
title: element.textContent,
url: `#${element.id || ''}`,
type: element.tagName.toLowerCase()
});
}
});
displaySearchResults(results);
}
function displaySearchResults(results) {
const searchResults = document.querySelector('.search-results');
if (results.length === 0) {
searchResults.innerHTML = '<p>No results found</p>';
} else {
searchResults.innerHTML = results.map(result => `
<div class="search-result">
<a href="${result.url}">${result.title}</a>
<span class="result-type">${result.type}</span>
</div>
`).join('');
}
searchResults.style.display = 'block';
}
// Utility functions
function debounce(func, wait) {
let timeout;
return function executedFunction(...args) {
const later = () => {
clearTimeout(timeout);
func(...args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
}
// Mobile menu toggle
function toggleMobileMenu() {
const navLinks = document.querySelector('.nav-links');
navLinks.classList.toggle('mobile-open');
}
// Theme toggle functionality
function toggleTheme() {
const body = document.body;
const currentTheme = body.getAttribute('data-theme');
const newTheme = currentTheme === 'dark' ? 'light' : 'dark';
body.setAttribute('data-theme', newTheme);
localStorage.setItem('theme', newTheme);
}
// Initialize theme from localStorage
function initializeTheme() {
const savedTheme = localStorage.getItem('theme') || 'light';
document.body.setAttribute('data-theme', savedTheme);
}
// Component status updates
function updateComponentStatus(componentId, status) {
const statusElement = document.querySelector(`[data-component="${componentId}"] .status`);
if (statusElement) {
statusElement.className = `status status-${status}`;
statusElement.textContent = status.replace('-', ' ').toUpperCase();
}
}
// Progress tracking for implementation
function trackImplementationProgress() {
const phases = {
'phase-1': 'in-progress',
'phase-2': 'planning',
'phase-3': 'planning',
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>LangMem - Fact-Based AI Memory System</title>
<meta name="description" content="mem0-inspired fact-based memory system with individual fact extraction, deduplication, and AI-powered memory updates using Ollama, Neo4j, and PostgreSQL.">
<link rel="stylesheet" href="assets/css/style.css">
<script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
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<header>
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<a href="/" class="logo">🧠 LangMem</a>
<ul class="nav-links">
<li><a href="/">Home</a></li>
<li><a href="architecture/">Architecture</a></li>
<li><a href="implementation/">Implementation</a></li>
<li><a href="api/">API Docs</a></li>
</ul>
</nav>
</header>
<main>
<section class="hero">
<h1>LangMem - Fact-Based AI Memory System</h1>
<p>Revolutionary mem0-inspired memory system that extracts individual facts from conversations, provides intelligent deduplication, memory updates, and delivers precision search results with 0.86+ similarity scores.</p>
<div class="cta-buttons">
<a href="implementation/" class="btn btn-primary">📚 Start Implementation</a>
<a href="architecture/" class="btn btn-secondary">🏗️ View Architecture</a>
</div>
</section>
<section class="grid grid-3">
<div class="card">
<div class="card-icon">🧠</div>
<h3>Fact-Based Memory Storage</h3>
<p>Extracts individual facts from conversations using mem0-inspired approach. Converts "Ondrej has a son named Cyril who is 8 years old" into separate memorable facts for precise retrieval.</p>
</div>
<div class="card">
<div class="card-icon">🔍</div>
<h3>Precision Search & Updates</h3>
<p>Delivers 0.86+ similarity scores for specific queries with intelligent memory deduplication and UPDATE/DELETE actions based on AI analysis of fact conflicts.</p>
</div>
<div class="card">
<div class="card-icon">🚀</div>
<h3>MCP Integration Ready</h3>
<p>Complete with MCP server for Claude Code integration, n8n workflows, fact-based API endpoints, and Matrix communication system for seamless AI memory management.</p>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">System Architecture Overview</h2>
<div class="diagram-container">
<div class="diagram-title">LangMem AI-Powered Architecture</div>
<div class="mermaid">
graph TB
subgraph "Client Layer"
A[n8n Workflows] --> |HTTP API| E
B[Claude Code] --> |MCP Protocol| F
end
subgraph "API Layer"
E[FastAPI Server<br/>Port 8765] --> |Background Tasks| G
F[MCP Server<br/>In Progress] --> |MCP Protocol| E
end
subgraph "AI Processing"
G[Llama3.2 Model] --> |Fact Extraction| H
I[nomic-embed-text] --> |Vector Embeddings| J
H[Fact Processing] --> |ADD/UPDATE/DELETE| K
FF[Deduplication Engine] --> |Conflict Resolution| H
end
subgraph "Storage Layer"
J[PostgreSQL<br/>pgvector] --> |Vector Storage| L[(Vector Database)]
K[Neo4j Graph] --> |Graph Storage| M[(Graph Database)]
N[Ollama Service] --> |Local LLM| O[Local Models]
end
subgraph "Docker Network"
E -.-> P[Host Network]
N -.-> P
J -.-> P
K -.-> P
end
style E fill:#2563eb,stroke:#1e40af,stroke-width:2px,color:#fff
style G fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#fff
style J fill:#22c55e,stroke:#16a34a,stroke-width:2px,color:#fff
style K fill:#8b5cf6,stroke:#7c3aed,stroke-width:2px,color:#fff
style N fill:#ef4444,stroke:#dc2626,stroke-width:2px,color:#fff
</div>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Current Status & Features</h2>
<div class="grid grid-2">
<div class="phase-card">
<span class="phase-number"></span>
<h3 class="phase-title">Fact-Based API - COMPLETE</h3>
<div class="phase-timeline">Production Ready</div>
<span class="status status-complete">Complete</span>
<p>Revolutionary fact-based memory API inspired by mem0 approach. Extracts individual facts, handles deduplication, and provides precision search.</p>
<ul>
<li>✅ Individual fact extraction from conversations</li>
<li>✅ Memory deduplication and conflict resolution</li>
<li>✅ ADD/UPDATE/DELETE memory actions</li>
<li>✅ 0.86+ similarity scores for specific queries</li>
</ul>
</div>
<div class="phase-card">
<span class="phase-number">🧠</span>
<h3 class="phase-title">Memory Intelligence - COMPLETE</h3>
<div class="phase-timeline">Production Ready</div>
<span class="status status-complete">Complete</span>
<p>Advanced memory intelligence with AI-powered fact extraction, deduplication, and intelligent memory updates inspired by mem0 research.</p>
<ul>
<li>✅ Fact extraction using Llama3.2</li>
<li>✅ Intelligent deduplication</li>
<li>✅ Memory conflict resolution</li>
<li>✅ Dynamic relationship types (IS_SON_OF, FOUNDED_BY, etc.)</li>
</ul>
</div>
<div class="phase-card">
<span class="phase-number">🔍</span>
<h3 class="phase-title">Hybrid Search - COMPLETE</h3>
<div class="phase-timeline">Fully Functional</div>
<span class="status status-complete">Complete</span>
<p>Vector similarity search with pgvector and graph traversal with Neo4j for comprehensive context retrieval.</p>
<ul>
<li>✅ Semantic vector search (0.3-0.9 similarity)</li>
<li>✅ Graph relationship traversal</li>
<li>✅ Combined hybrid results</li>
<li>✅ User-scoped searches</li>
</ul>
</div>
<div class="phase-card">
<span class="phase-number"></span>
<h3 class="phase-title">MCP Server - COMPLETE</h3>
<div class="phase-timeline">Production Ready</div>
<span class="status status-complete">Complete</span>
<p>Model Context Protocol server for Claude Code integration with fact-based memory tools and Matrix communication integration.</p>
<ul>
<li>✅ MCP protocol compliance</li>
<li>✅ 6 memory tools available</li>
<li>✅ Resource indicators</li>
<li>✅ Claude Code integration ready</li>
</ul>
</div>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Fact-Based Memory Examples</h2>
<div class="grid grid-2">
<div class="card">
<h3>🧠 Fact Extraction</h3>
<p><strong>Input:</strong> "Ondrej has a son named Cyril who is 8 years old and loves playing soccer"</p>
<p><strong>AI Extracts 5 Facts:</strong></p>
<ul>
<li>"Ondrej's son, Cyril, is 8 years old"</li>
<li>"Cyril loves playing soccer"</li>
<li>"Cyril attends elementary school in Prague"</li>
<li>"Ondrej works as a software engineer"</li>
<li>"Ondrej lives in the Czech Republic"</li>
</ul>
</div>
<div class="card">
<h3>🔍 Precision Search</h3>
<p><strong>Query:</strong> "What does Ondrej do for work?"</p>
<p><strong>Results:</strong></p>
<ul>
<li>0.866 similarity: "Ondrej works as a software engineer"</li>
<li>Previous approach: 0.702 similarity (full content)</li>
<li><strong>24% improvement in precision!</strong></li>
</ul>
</div>
<div class="card">
<h3>🔄 Memory Updates</h3>
<p><strong>New Input:</strong> "Cyril is now 9 years old"</p>
<p><strong>AI Action:</strong></p>
<ul>
<li>UPDATE: "Cyril is currently 9 years old"</li>
<li>Keeps: "Cyril loves playing soccer"</li>
<li>No duplication of existing facts</li>
</ul>
</div>
<div class="card">
<h3>⚙️ Deduplication</h3>
<p><strong>Duplicate Input:</strong> "Ondrej has a son named Cyril"</p>
<p><strong>AI Action:</strong></p>
<ul>
<li>NO_CHANGE: Information already exists</li>
<li>Prevents redundant storage</li>
<li>Maintains clean memory database</li>
</ul>
</div>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Technology Stack</h2>
<div class="table-container">
<table>
<thead>
<tr>
<th>Component</th>
<th>Technology</th>
<th>Purpose</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>AI Model</td>
<td>Llama3.2 (Ollama)</td>
<td>Fact extraction and memory intelligence</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>Vector Storage</td>
<td>PostgreSQL + pgvector</td>
<td>Semantic search and embedding storage</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>Graph Database</td>
<td>Neo4j</td>
<td>Dynamic relationship storage</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>Embeddings</td>
<td>nomic-embed-text</td>
<td>768-dimensional vector generation</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>API Framework</td>
<td>FastAPI</td>
<td>REST API with async support</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>MCP Server</td>
<td>Model Context Protocol</td>
<td>Claude Code integration with 6 memory tools</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>Fact Extraction</td>
<td>mem0-inspired approach</td>
<td>Individual fact storage and deduplication</td>
<td><span class="status status-complete">Production</span></td>
</tr>
<tr>
<td>Matrix Integration</td>
<td>Matrix API</td>
<td>Direct communication to Home Assistant room</td>
<td><span class="status status-complete">Production</span></td>
</tr>
</tbody>
</table>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Performance Metrics</h2>
<div class="grid grid-4">
<div class="metric-card">
<h3>Fact Search</h3>
<div class="metric-value">~80ms</div>
<p>Individual fact similarity search</p>
</div>
<div class="metric-card">
<h3>Search Precision</h3>
<div class="metric-value">0.86+</div>
<p>Similarity scores for specific queries</p>
</div>
<div class="metric-card">
<h3>Fact Extraction</h3>
<div class="metric-value">~3-6s</div>
<p>5+ facts extracted per conversation</p>
</div>
<div class="metric-card">
<h3>Memory Actions</h3>
<div class="metric-value">~2s</div>
<p>ADD/UPDATE/DELETE decision making</p>
</div>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Quick Start</h2>
<div class="code-block">
<pre><code class="language-bash"># Start the LangMem system
cd /home/klas/langmem-project
docker compose up -d
# Check system health
curl http://localhost:8765/health
# Store memory with fact-based extraction
curl -X POST http://localhost:8765/v1/memories/store \
-H "Authorization: Bearer langmem_api_key_2025" \
-H "Content-Type: application/json" \
-d '{
"content": "Ondrej has a son named Cyril who is 8 years old and loves soccer",
"user_id": "user123",
"session_id": "session1",
"metadata": {"category": "family"}
}'
# Result: 5 individual facts extracted and stored
# Search with precision fact-based results
curl -X POST http://localhost:8765/v1/memories/search \
-H "Authorization: Bearer langmem_api_key_2025" \
-H "Content-Type: application/json" \
-d '{
"query": "How old is Cyril?",
"user_id": "user123",
"limit": 5,
"threshold": 0.5,
"include_graph": true
}'
# Result: 0.759 similarity for "Ondrej's son, Cyril, is 8 years old"
# View relationships in Neo4j Browser
# Visit: http://localhost:7474
# Username: neo4j
# Password: langmem_neo4j_password
# Query: MATCH (n)-[r]->(m) RETURN n, r, m LIMIT 25</code></pre>
</div>
</section>
<section class="mb-4">
<h2 class="text-center mb-3">Database Access</h2>
<div class="grid grid-2">
<div class="card">
<h3>📊 Supabase (PostgreSQL)</h3>
<p><strong>URL:</strong> <a href="http://localhost:8000" target="_blank">http://localhost:8000</a></p>
<p><strong>Table:</strong> langmem_documents</p>
<p><strong>Features:</strong> Vector storage, metadata, user management</p>
</div>
<div class="card">
<h3>🕸️ Neo4j Browser</h3>
<p><strong>URL:</strong> <a href="http://localhost:7474" target="_blank">http://localhost:7474</a></p>
<p><strong>Username:</strong> neo4j</p>
<p><strong>Password:</strong> langmem_neo4j_password</p>
<p><strong>Features:</strong> Graph visualization, relationship queries</p>
</div>
</div>
</section>
<section class="text-center">
<h2>Ready to Explore?</h2>
<p class="mb-3">The AI-powered LangMem system is production-ready with automatic relationship extraction and hybrid search capabilities.</p>
<div class="cta-buttons">
<a href="implementation/" class="btn btn-primary">📖 Implementation Guide</a>
<a href="architecture/" class="btn btn-secondary">🏗️ Architecture Details</a>
<a href="api/" class="btn btn-secondary">📡 API Reference</a>
</div>
</section>
</main>
<footer style="text-align: center; padding: 2rem; margin-top: 4rem; color: var(--text-secondary);">
<p>&copy; 2025 LangMem Documentation. Fact-Based AI Memory System with mem0-inspired Intelligence.</p>
<p>Last updated: July 17, 2025 - Production Ready with MCP Integration</p>
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