DeltaMemory

The Cognitive Memory Layer for AI Applications

DeltaMemory provides production-grade long-term memory infrastructure for AI agents, assistants, and applications. Unlike simple vector stores, DeltaMemory implements a cognitive architecture that mirrors human memory systems—automatically extracting structured knowledge, maintaining temporal context, and enabling multi-hop reasoning across your data.

Why DeltaMemory?

Modern AI applications require more than keyword search or basic RAG. They need memory that:

• Understands context — Extracts structured profiles, events, and relationships automatically
• Reasons across knowledge — Multi-hop graph traversal for complex queries
• Prioritizes relevance — Cognitive scoring combines similarity, recency, and salience
• Scales efficiently — Scalable architecture for production workloads

Key Features

Cognitive Processing

Every piece of content ingested through DeltaMemory undergoes intelligent extraction:

• User Profiles — Structured facts organized by topic (preferences, work, interests)
• Event Timeline — Activities, plans, and milestones with temporal awareness
• Knowledge Graph — Concepts and relationships for multi-hop reasoning
• Fact Extraction — Discrete, queryable facts with confidence scores

Hybrid Recall

DeltaMemory's recall system combines multiple signals for optimal retrieval:

cognitive_score = (similarity × w₁) + (recency × w₂) + (salience × w₃)

• Semantic Similarity — Vector-based relevance matching
• Temporal Recency — Recent memories weighted appropriately
• Salience Scoring — Important memories surface naturally

Pre-formatted Context

Every recall returns a ready-to-use context string optimized for LLM consumption:

const { context } = await db.recall('user preferences');
// Returns formatted markdown with profiles, events, and relevant memories

Enterprise-Grade Infrastructure

DeltaMemory is built from the ground up for production workloads:

• High Performance — Optimized storage engine designed for sub-millisecond recall
• Scalable — Handles millions of memories with consistent performance
• Reliable — Production-tested with enterprise customers
• Secure — Self-hosted deployment with full data control

Quick Example

import { DeltaMemory } from 'deltamemory';
 
const db = new DeltaMemory({ 
  apiKey: process.env.DELTAMEMORY_API_KEY,
  defaultCollection: 'my-agent' 
});
 
// Ingest with automatic cognitive processing
await db.ingest('I work as a senior engineer at Acme Corp. I prefer TypeScript.');
 
// Recall with structured context
const { profiles, events, context } = await db.recall('user background');
 
console.log(profiles);
// [
//   { topic: 'work', sub_topic: 'title', content: 'senior engineer' },
//   { topic: 'work', sub_topic: 'company', content: 'Acme Corp' },
//   { topic: 'interest', sub_topic: 'language', content: 'TypeScript' }
// ]

Getting Started

Choose your preferred SDK to begin:

Integration Ecosystem

DeltaMemory integrates seamlessly with popular AI frameworks:

Licensing

DeltaMemory is available as a managed service at app.deltamemory.com (opens in a new tab). Sign up to get your API key and endpoint.

Getting Started

1. Sign up at app.deltamemory.com (opens in a new tab)
2. Create a project and get your API key
3. Install the SDK and start building

import { DeltaMemory } from 'deltamemory';
 
const db = new DeltaMemory({
  apiKey: process.env.DELTAMEMORY_API_KEY,  // From dashboard
  baseUrl: process.env.DELTAMEMORY_URL,     // Your assigned endpoint
});

Multi-Tenant Architecture

DeltaMemory is designed for multi-tenant SaaS applications. Each API key is bound to a specific tenant, providing complete data isolation:

// Each API key routes to an isolated tenant
const tenant1 = new DeltaMemory({ apiKey: 'dm_tenant1_key' });
const tenant2 = new DeltaMemory({ apiKey: 'dm_tenant2_key' });
 
// Data is completely isolated between tenants
await tenant1.ingest('Tenant 1 data');  // Stored in tenant1's isolated storage
await tenant2.ingest('Tenant 2 data');  // Stored in tenant2's isolated storage

Key features:

• API key determines tenant routing automatically
• Complete storage isolation (WAL, SSTables, vector index, graph)
• No cross-tenant data leakage
• Per-tenant rate limiting and quotas

For multi-user isolation within a single tenant, use collections:

const db = new DeltaMemory({ apiKey: process.env.DELTAMEMORY_API_KEY });
 
// Isolate users within your tenant using collections
await db.ingest('User 1 preference', { collection: 'user-123' });
await db.ingest('User 2 preference', { collection: 'user-456' });