by itechmeat · MCP Server · ★ 104
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
Open Second Brain An Obsidian-native memory layer for your AI agent. Plain Markdown you own, in the same vault you already use. Open Second Brain plugs into Hermes Agent and turns your Obsidian vault into a memory layer the agent reads and writes through deterministic CLI / MCP tools. Preferences, signals, evidence, and audit trails are real files under in the vault you already open in Obsidian every day. You can grep them, version them with git, search them in Obsidian, edit them by hand. No daemon, no vector black box, no hidden state outside the vault. Why Lives in your Obsidian vault. Open in Obsidian and you literally see what your agent learned about you - title, status, evidence count, confidence band, body text. Wikilinks, backlinks, graph view all work. You own the data. Plain Markdown on your filesystem. No service to cancel, no cloud account, no schema migration when a vendor pivots. Syncthing to your other machines if you want. Memory that learns deterministically. A pass turns repeat signals into rules and retires the ones nothing applies any more. Counters and atomic file moves - no LLM inside the algorithm, no surprise hallucinations in your memory.
| Stars | 104 |
| Forks | 4 |
| Language | TypeScript |
| Category | MCP Server |
| License | MIT |
| Quality Score | 67.164718643052/100 |
| Last Updated | 2026-06-29 |
| Created | 2026-05-06 |
| Platforms | claude-code, codex, mcp, node |
| Est. Tokens | ~16k |
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open-second-brain is Local-first 🧠 memory for Hermes Agent that lives in your Obsidian vault and remembers project context. Nightly 😴 dream passes turn repeat corrections into confirmed preferences with measurable confi. It is categorized as a MCP Server with 104 GitHub stars.
open-second-brain is primarily written in TypeScript.
You can find installation instructions and usage details in the open-second-brain GitHub repository at github.com/itechmeat/open-second-brain. The project has 104 stars and 4 forks, indicating an active community.
open-second-brain is released under the MIT license, making it free to use and modify according to the license terms.