How to Give Your AI Long-Term Memory
Claude and ChatGPT have limited memory between conversations. Built-in features store short facts, but not your actual notes and research. You can fix that by giving your AI access to an external knowledge base.
The problem: your AI starts from scratch every time
You explain your project to Claude. It gives a great answer. You close the chat. Next conversation, it has no idea who you are or what you are working on.
So you explain again. And again. And again.
This is the re-explaining problem. Every conversation is a blank slate. Your AI has no memory of what you told it before, what you wrote last week, or what decisions your team already made.
Built-in memory features (like ChatGPT Memories) help a little. They store short facts. But they are not designed for the kind of context that actually matters: your notes, your research, your project background, your preferences.
The fix: connect your AI to an external knowledge base
Instead of relying on your AI's built-in memory, you store your knowledge in a separate place. Then you connect your AI to it.
The connection happens through MCP (Model Context Protocol). MCP lets Claude and ChatGPT reach into an external service, search for relevant notes, and pull them into the conversation.
How it works in practice:
- You save notes to your knowledge base (meeting notes, decisions, research, project context)
- You connect your AI to the knowledge base via MCP (one-time setup)
- In any future conversation, your AI searches your notes for relevant context before answering
Your AI does not literally "remember." It retrieves. Every time you start a conversation, it can look up what you wrote before. The effect is the same: your AI knows your context without you repeating it.
What to save in your knowledge base
The more useful context you store, the better your AI performs. Start with whatever you find yourself re-explaining.
Project context
Tech stack, architecture decisions, what you have tried, what failed. Stop re-explaining your setup.
Meeting notes and decisions
What was decided, by whom, and why. Your AI can reference this instead of guessing.
Research and reference material
Articles, summaries, comparisons. Build on prior research instead of starting over.
Preferences and instructions
How you like code formatted. What tone to use. What your team's conventions are. Tell your AI once.
Set it up in two minutes
You need two things: a knowledge base that supports MCP, and an AI that speaks MCP. Here is how to do it with Hjarni.
1. Create a Hjarni account
Free to start. No credit card required. Add a few notes with context your AI should know.
2. Connect your AI
Claude: Go to Customize > Connectors, add https://hjarni.com/mcp as a custom connector.
ChatGPT: Go to Settings > Apps, enable developer mode, create an app with the same URL.
See the full guides for Claude or ChatGPT.
3. Ask your AI something
Start a new conversation. Ask about something you saved. Your AI searches your notes and responds with full context.
What changes when your AI has memory
The difference is immediate. Here is what a connected AI can do that a disconnected one cannot:
You write once. Your AI can look it up whenever the connection is active. That is the loop: research, save, reuse.
FAQ
Is this the same as ChatGPT's built-in memory?
No. ChatGPT Memories stores short facts ("user prefers Python"). An external knowledge base stores your actual notes, documents, and research. It is a different scale of context.
Does my AI actually remember, or does it search every time?
It searches. Every conversation, your AI looks up relevant notes via MCP. The effect feels like memory, but it is retrieval. That is actually better: your notes are always the source of truth, not a summary the AI wrote about you.
Do I need to be technical?
No. If you can write a note and follow a short setup flow (Connectors in Claude, developer mode in ChatGPT), you can do this. No code, no config files, no API keys.
Does this work with both Claude and ChatGPT?
Yes. Hjarni's MCP server works with any AI that supports MCP. Today that includes Claude and ChatGPT. More are coming.
Is my data safe?
Your notes stay in Hjarni. Your AI accesses them through an authenticated connection (OAuth). Hjarni does not train AI on your data. See privacy and permissions for details.
Stop re-explaining yourself to your AI.
Give your AI a memory. Free to start. Two minutes to set up.
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Write once. You both remember.
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Get started, it's freeWorks with Claude and ChatGPT today. Gemini coming soon.