ArcBrain is a local memory server that connects VS Code Copilot, Claude Desktop, and Cursor simultaneously via MCP. Every 5 minutes, it extracts structured facts from your AI sessions — not raw logs, but knowledge like "Auth uses JWT with 15-min expiry." Facts age through Working → Operational → Canonical layers. Fix a bug in one tool, the others know in minutes. All data stays on your machine. Supports OpenAI, Anthropic, Gemini, Grok, or local Ollama.
Hey Product Hunt! 👋 Wil here, solo dev and maker of ArcBrain.
I built this out of pure frustration. Every morning: open VS Code Copilot, re-explain my project. Switch to Claude Desktop, re-explain again. Open Cursor, re-explain a third time. I was the human clipboard between my own tools.
Six months later — ArcBrain. It runs locally, connects to all your MCP-compatible AI tools simultaneously, and keeps a shared memory that actually ages and improves over time. Fix something in Copilot → Claude knows about it 5 minutes later. No copy-paste. No "as I mentioned earlier."
If you've ever re-explained your codebase to AI more than once this week, this was built for you.
Happy to answer anything — throw your questions in the comments.
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About ArcBrain – Persistent AI Memory Layer on Product Hunt
“Persistent AI memory for Copilot, Cursor & Claude Desktop”
ArcBrain – Persistent AI Memory Layer was submitted on Product Hunt and earned 1 upvotes and 1 comments, placing #379 on the daily leaderboard. ArcBrain is a local memory server that connects VS Code Copilot, Claude Desktop, and Cursor simultaneously via MCP. Every 5 minutes, it extracts structured facts from your AI sessions — not raw logs, but knowledge like "Auth uses JWT with 15-min expiry." Facts age through Working → Operational → Canonical layers. Fix a bug in one tool, the others know in minutes. All data stays on your machine. Supports OpenAI, Anthropic, Gemini, Grok, or local Ollama.
ArcBrain – Persistent AI Memory Layer was featured in Productivity (649.8k followers), Developer Tools (511k followers) and Artificial Intelligence (466.2k followers) on Product Hunt. Together, these topics include over 279.2k products, making this a competitive space to launch in.
Who hunted ArcBrain – Persistent AI Memory Layer?
ArcBrain – Persistent AI Memory Layer was hunted by Wil Hurley. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Wil Hurley