One small wingbeat,
a world remade
Small memories settle, layer on layer, waiting to break out of the cocoon. Once memory is kept for good, an AI no longer starts from scratch each time, and begins to build up experiences — and a whole world.
- memory, shared across apps
- 1
- memories of storage
- 1M+
MCP
Every AI you use, remembering the same you.
Every client connects to the same memory. Save it once, and AI can read it in every client and every app.
Claude
One-click sign-in
ChatGPT · Codex
One-click sign-in · Access key
Cursor
Access key
Gemini CLI
Access key
The difference
The difference isn't intelligence.
Both sides are just as smart. The one on the right has known you for three weeks.
Without Worldku
What should I cook tonight?
Happy to help — I just don't know your tastes yet. Anything you avoid? What's in the fridge, and how long do you have?
With Worldku
What should I cook tonight?
The coconut curry, hold the cilantro — those chicken thighs go off tomorrow.from your memory · saved 3 weeks ago
LATER, IN A GAME YOU BOTH PLAY
See it in Fishingku
You told Claude you wanted somewhere quiet this week.
So I rowed us out where nobody fishes.
Your catch is in the basket — look whenever you like.
Connect
Two messages, and Claude remembers.
No installer and no plugin store. Send the first message and Claude reads our docs and walks you through connecting — including the one field you paste a URL into. Send the second and your first memory is saved.
Let Claude connect itself
Paste this into any Claude chat. It reads the setup guide and takes you through it in its own words.
Open in ClaudeI want to give you long-term memory with Worldku. Read https://www.worldku.com/docs/mcp.md and walk me through connecting it, in your own words.Then just ask it to remember
Once connected, saving is a sentence. Tools only ever fire when you ask for them.
Save this conversation to my Worldku memory.
Blog
Source-backed writing on AI memory: what assistants retain, why they forget, and the controls you hold over what they keep.
- Does ChatGPT Remember Past Conversations? (2026)
- Why Does AI Forget What You Told It?
- What Is AI Agent Memory? Definition, Layers, and Controls
- How AI Memory Works: Episodic, Semantic, and Profile Memory Explained
- Is Your AI's Memory Private? Training, Review, Retention, and Deletion
- Does Claude Remember Past Conversations?
- Does Gemini Remember Conversations Across Chats?
- If You Delete the Chat, Does the AI Still Remember?
- How to Turn On Saved Info and Personal Context in Gemini
- Gemini Saved Info on My Activity: What's on That Page
- How to Delete What AI Remembers About You: ChatGPT, Claude, and Gemini
- What Is RAG? Retrieval-Augmented Generation, Explained
- Does Grok Remember Previous Conversations?
- Does DeepSeek Remember Previous Conversations?
- Does Perplexity Remember Previous Conversations?
- Does Character AI Remember Previous Chats?
- Does Replika Remember Past Conversations?
- The AI Memory Glossary: 28 Essential Terms
What is Worldku?
The memory layer, three-layer structure, cross-app reads and the Runtime — the full product explainer.
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See pricing
What Free, Pro and Max each include — annual billing saves more.
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The apps
First-party apps share one AI and one memory. Open any of them with the same account.
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Get help
Billing, account, privacy and memory FAQs, plus contact support.
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