Hjarni is a knowledge base with a built-in MCP server. It connects to ChatGPT, Claude, and any AI assistant that speaks the protocol. Your notes become long-term memory. Stop re-pasting context every conversation.

Key facts

• Founded. 2026.
• Built by. A solo developer in Belgium.
• Pricing. Free to start, no credit card. Pro from €9/month. Teams plan available.
• Format. Notes are Markdown. Export anytime as a ZIP.
• Integrations. ChatGPT, Claude, OpenClaw, Zapier, REST API, MCP server.

See also

• Founder: short bio for Evert.
• Common questions: quick answers for journalists and analysts.

Get in touch

Press inquiries: evert@hjarni.com