Give Your OpenClaw Agent a Brain with Hjarni
OpenClaw is impressive out of the box. You message it, it acts. It runs on your machine, connects to your tools, and works while you sleep.
But it starts from zero every time.
Your notes are in Notion. Your decisions are in Obsidian. Your playbooks are in a Google Doc you haven't opened in three months. You keep re-explaining yourself.
Hjarni is an AI-native knowledge base with a built-in MCP server. OpenClaw can query it directly. Connect them once. Your agent now has access to your notes, your folders, your tags, on demand.
What this looks like in practice
You've stored your content distribution checklist in Hjarni. You publish a new post. OpenClaw picks it up, queries your knowledge base, retrieves the checklist, and works through it: posting to dev.to, submitting to directories, queuing social. No prompting from you.
Or you've captured your go-to debugging steps for a specific error pattern. Next time the agent hits that error, it queries Hjarni first. It already knows what to try.
The agent stops being reactive. It starts being informed.
How to connect them
OpenClaw supports MCP servers natively. Add Hjarni's MCP server to your openclaw.json:
{
"mcp": {
"servers": {
"hjarni": {
"url": "https://hjarni.com/mcp"
}
}
}
}
Hjarni uses OAuth, so the first connection will prompt you to authorize access. See the Hjarni MCP docs for the full setup guide, or read How to Give Claude Long-Term Memory for a step-by-step walkthrough.
Why Hjarni and not just Notion or Obsidian?
Notion and Obsidian weren't designed for agent retrieval. No structured API for searching by keyword, filtering by tag, or fetching a note by title.
Hjarni exposes those operations directly through MCP. Clean tool calls. No workarounds. No fragile integrations.
No databases. No kanban boards. No page builders. Notes, folders, tags, Markdown. That's the product. The constraint is the feature.
Built for builders
Hjarni is free to start. 25 notes, full MCP access, no credit card. One connection gives your agent reusable context across workflows, sessions, and devices. Write once, you both remember.
OpenClaw gives you an agent that can act. Hjarni gives it context worth acting on.