GoldieBench Blog · 1 min read
Obsidian As Your Agentic OS Memory — One Vault, Every Agent
How to use Obsidian as the shared memory of your agentic OS: one vault every agent reads and writes, auto-captured notes, a visual memory galaxy, and scheduled agent reviews.
The biggest failure of multi-agent setups isn't the models — it's amnesia.
Claude doesn't know what Hermes did; every session starts from zero.
The fix is boring and beautiful: Obsidian.
Plain markdown, free, open source, local — and every agent can read and write it.
The architecture
One vault, all agents. Claude, Hermes, Codex and your voice copilot all point at the same folder.
An agent finishes work → appends a markdown log.
Another agent starts → reads that context first.
Suddenly answers are personalized to your actual business.
Auto-capture. Wearable/screen note tools export into the vault, so memory forms without you writing anything.
The memory galaxy. Inside the Agent OS the vault renders as a linked graph — every dot a project, person or tool, clickable and previewable.
Memory you can see gets maintained; memory in a folder gets abandoned.
Scheduled reviews. A weekly agent job reads the vault and writes the recap — your notes stay alive because an agent tends them.
Which model tends the memory?
Memory chores are exactly what free local models are for.
Gemma 4 12B handles summarize-and-file at $0; Agents-A1 adds real tool-calling depth at 95 tok/s — both benchmarked with playable proof on the local board.
Set it up
Guides at agentos.guide; the full wired-in memory system (vault structure + galaxy + agent hooks) ships with the Agent OS in the AI Profit Boardroom.
FAQ
Why Obsidian instead of a vector database?
Markdown files are readable by every agent, editable by you, versionable, and free. For personal/business agent memory, transparency beats embeddings — and you can layer search on top later.
How do agents actually write to the vault?
They have file access to the vault folder: append daily logs, create project notes, update a decisions file. Rule: agents write outside your manual notes' markers so nothing of yours gets clobbered.
Does this work offline?
Completely — Obsidian is local, and with a local model doing the reading/writing the entire memory loop runs without internet.
What's the memory galaxy?
The Agent OS's visual layer over the vault: every memory rendered as a linked node you can click and preview. It turns a folder of markdown into something you actually explore.
Keep reading
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GEO Examples: Four Real AI Overview Wins, The Three Moves Behind Them, And The Models Writing The Answers
Best Generative Engine Optimization Agency: Seven Picks By Region, And How The Models Behind AI Answers Score🌐 Sister-site take: read this on agentos.guide