AN OBSIDIAN VAULT CONNECTED TO CLAUDE CODE THROUGH MCP CAN LET YOUR AGENT READ ARCHITECTURE AND DECISIONS BEFORE IT CHANGES THE CODE
The bottleneck is not Claude Code's reasoning.
It is the context that disappears when a session ends.
Connect Claude Code to an Obsidian vault through MCP.
Then keep your project memory in plain Markdown files.
Start with ActiveContext.md for the current task and latest state.
Add Decisions.md for choices, trade-offs, and rejected approaches.
Keep an Architecture note for services, data flow, and key dependencies.
Install BRAT in Obsidian, then add the Claude Code MCP plugin.
Register the vault as an MCP tool from the Claude Code terminal.
Now Claude Code can read the project before it edits the project.
It can also update ActiveContext.md when a task is finished.
The graph view is useful because disconnected notes reveal missing context.
This does not replace code review or tests.
It replaces the repeated briefing that wastes the first part of every session.
The useful part is not a second brain.
It is a project memory your coding agent can actually use.
Bookmark this before you need the workflow. Follow for the next breakdown worth keeping.