Second Brain Hub for Codex and Obsidian
Capture ideas, process an inbox, review notes and search a local knowledge base through one skill. The hub chooses a workflow and records what was saved. It supports an Obsidian vault or a plain Markdown workspace.
中文Install in Codex
A local Codex session that can access the skills directory and the approved workspace. The runtime uses Node.js. Obsidian is applicable when the selected workspace is a vault.
- Get the repository at the referenced commit. Copy all six skill folders as documented in the README, including the hub, Defuddle, Obsidian Markdown, Obsidian CLI, Obsidian Bases and JSON Canvas.
- Check that each skill directory contains SKILL.md, reopen the session and ask Codex to read the installed hub's SETUP.md. Choose a vault or a plain folder and confirm its absolute path.
- Verify that hub-state.json points to the selected workspace. Preserve that file and back up the skill folders before updating an existing setup.
Example task
Initialize an empty test workspace, then send this prompt.
Use second-brain-hub to save this idea to the test workspace inbox: add one line about this week's verification results to the weekly report cover. Show me the destination before saving and report the final path after I confirm.What to check
After confirmation, the test inbox contains a time-stamped Markdown note with the original idea, an edited rendering and a short takeaway. The runtime receipt gives its location.
Original SKILL.md on GitHub · Updated
Frequently asked question
Which companion skills should I install with Second Brain Hub?
Install the hub plus Defuddle, Obsidian Markdown, Obsidian CLI, Obsidian Bases and JSON Canvas. The hub's SETUP.md configures the workspace after installation.