Self-Writing Knowledge Architecture

A self-writing knowledge architecture transforms a personal vault from a passive archive into an active intelligence system that reads itself, finds connections, and generates new content autonomously. This is not simply note-taking — it is operational knowledge management.

The Three-Layer Model

The architecture consists of three interdependent layers:

Knowledge Layer: Plain text Markdown files organized in a machine-readable structure. Obsidian serves as the storage engine, providing wikilinks, folder hierarchy, and human-readable content.

Connection Layer: MCP (Model Context Protocol) provides direct read/write access to every file. Claude Code operates through MCP the same way a human operates through a file browser — but at scale, on schedule, and without fatigue.

Intelligence Layer: Scheduled agent workflows that read specific vault sections, process findings against the full vault context, and write results back to designated output folders. Six workflows form the core: Daily Context Generator, Connection Finder, Queue Processor, Weekly Synthesis, Project Auto-Updater, and Knowledge Distillation Engine.

The HermiesVault and Hermes Connection

This architecture directly informs products like HermiesVault and ObsidianBrain — the idea that a second brain should not be a one-way dump but a compounding system. The vault structure (raw → wiki → concepts → synthesis) that powers Hermes' KB is a concrete implementation of this self-writing principle at a smaller scale.

Key Design Principles

Structure enables autonomy: Without predictable folder conventions and naming patterns, autonomous writes land in unpredictable places. The PARA system modified with Generated and Queue folders creates a clear contract between human and machine.
Compounding over time: The system gets meaningfully smarter as more content accumulates. A Connection Finder run on 100 notes is trivial; on 2,000 notes, it surfaces links the human author genuinely forgot existed.
Asynchronous task capture: The Queue folder decouples idea generation from execution. You capture when inspired; the system processes on schedule. No waiting sessions.

The Gap Between Theory and Practice

CyrilXBT's architecture describes the ideal end state. Most people are closer to step one — getting MCP connected and reading files reliably. The bridge between "I can give Claude file access" and "my vault writes back to itself autonomously" requires disciplined vault structure, which is the hard part.

Connected Concepts

HermiesVault MVP Specification
LLM Wiki
Knowledge Base
Claude + Obsidian Architecture

Sources

<a href="/bookmarks/cyrilxbt-on-x:-"your-obsidian-vault-can-now-write-back-to-itself.-here's-the-architecture-nobody's-talking-about"-/-x" class="text-primary underline underline-offset-2">CyrilXBT on X: "Your Obsidian Vault Can Now Write Back to Itself. Here's the Architecture Nobody's Talking About" / X
HermiesVault MVP Specification
GitHub - rohitg00/agentmemory: #1 Persistent memory for AI coding agents based on real-world benchmarks · GitHub