How do I build persistent memory for AI agents?

Start with the JSON store code above – Bun or Node fs. Add retrieval, inject context. Scale to vectors later.

Does this memory system work with GPT or Claude?

Yep, any LLM via prompt injection. Tested with Claude; GPT fine-tunes naturally.

No concurrency, slow at 10k+ entries, naive search. Use for prototypes; prod needs DBs.

Your AI agent's got amnesia every reboot. One dev fixed it with a dirt-simple persistent memory store – but is it hype or helper?

theAIcatchup Apr 10, 2026 4 min read

Simple JSON memory cuts AI agent forgetfulness by 67% in tests – no fancy tech needed. 𝕏
Production pitfalls: scale with vectors, prune, secure – don't skip. 𝕏
Big money in memory wrappers; build open source to stay free. 𝕏

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Community-driven. Code-first.

#AI agents #LLM memory #LLM memory system #autonomous AI #autonomous agents #persistent memory

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Originally reported by Dev.to