Hjarni

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Hjarni is an AI-native knowledge base with a built-in MCP server. Give your AI a memory. Your AI forgets everything between sessions. So you keep re-explaining your stack, your project, your decisions. Hjarni fixes that. Save your notes once. Claude and ChatGPT read them, follow your instructions, and remember what you told them, across every conversation. It's simple on purpose. Notes, folders, tags. Written in Markdown. No databases, no kanban, no page builders. We left features out on purpose. The constraint is the feature. The loop is simple. Research in your AI. Save to Hjarni. Act. Repeat. Write once. You both remember. Built for developers, founders, researchers, writers, and travelers who use AI every day and want it to actually know what they're working on. Free to start. No credit card required. No trials, no hidden fees.