Memory for AI agents that never silently loses or overwrites a fact.
The reliable memory layer for CrewAI, LangGraph, LlamaIndex and any agent. Every change is archived with full lineage — so your agent's memory never lies to it. (Works across Claude, GPT and Gemini too.)
Memory Explorer
Watch how context transfers between LLMs
Access Status
Sign up now and get immediate access to CLS++ Memory API — open worldwide.
Experience Cross-LLM Memory
Chat with one LLM, then switch to another. Watch your context transfer automatically. Tell me your name, what you're working on, and then switch LLMs!
Start a conversation
Try: "Hi, my name is Alex and I'm building a SaaS app" then switch to another LLM!
Stored Memories
No memories yet
Start chatting to build context
Memory you can trust
Built so your agent's memory never silently loses or wrongly overwrites a fact — and proves what it did to each one.
Belief revision with lineage
A contradicting fact archives the old one with full lineage and version — never a silent overwrite or delete. Your agent's memory has a provable history.
No silent data loss
Writes persist from the engine's own index; a failed embedder degrades ranking, never loses a fact. Run the proof — it's reproducible.
Drop-in for your agent
Three lines to integrate. Native adapters for CrewAI, LangGraph, LlamaIndex, AutoGen and MCP. TypeScript and Python SDKs.
Durable by design
Writes are fsync-acknowledged to a write-ahead log, with recovery tested against process death and torn-tail records. An accepted write is a kept write.
Works across models
Store a memory once and recall it in Claude, GPT or Gemini — switch providers without re-introducing context.
Yours to control
Encrypted in transit; delete any memory on request (GDPR right-to-be-forgotten). Your data stays yours.
Three lines of code. Memory you can trust.
Drop CLS++ into your agent in minutes. It stores, recalls, and revises memory — and proves what it did to each fact.
- Archives every superseded fact with lineage — never a silent overwrite
- Survives embedder failures — a dead embedder loses nothing
- Drop-in for CrewAI, LangGraph, LlamaIndex, AutoGen and MCP
- TypeScript and Python SDKs
npm install clsplusplus
import { Brain } from 'clsplusplus';
const brain = new Brain('alice', { apiKey: 'cls_live_...' });
// Teach it anything
await brain.learn('I prefer Python over JavaScript');
// Recall — semantic, across any LLM
const facts = await brain.ask('What languages do I like?');Ready for memory your agent can trust?
Start with 50 free API calls per day. No credit card required. Upgrade anytime as you scale.