agentusecases.aiAll 1,590 use cases
Research & Knowledge

Run a markdown second brain

A commenter uses Claude Code daily to answer questions, retrieve docs, create files and reorganize a markdown knowledge base synced with git and viewable in Obsidian.

Done withCCClaude Code

What they did
A commenter built a personal “second brain” as a repo of markdown files covering projects, thoughts, and writing, then uses Claude Code on that folder every day. The agent answers questions over the files, retrieves documents, creates new notes, and reorganizes the knowledge base; git handles syncing and the same files are read and edited in Obsidian.
How it went
They say they use it daily and love the setup, but the thread gives no metrics or detailed limits. The source also does not spell out any human review steps beyond the person using Claude Code on the repo.
Worth knowing
The practical catch is the stack: markdown files in a git-synced repo, with Obsidian as the interface for reading and writing.

Try it yourself with Claude Code

Treat the markdown files in [folder path] as my personal knowledge base. Answer questions from it, find specific documents on request, create new notes, and propose a cleaner folder structure for the existing ones. Show me the proposed reorganization before moving or deleting any files, and commit changes to git once I approve.

Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.

Read the original ↗

Source: Reddit · Undated

Related use cases

  • CC

    Turn tickets into merged pull requests

    Pulls tasks from GitHub Issues or Linear, then runs Claude Code or Codex in isolated Kubernetes pods to carry each one through to a PR.

    Claude CodeCodex

  • CC

    Extract expenses from credit card statements into Excel

    The author had Claude Code read a folder of credit card statements, learn his patterns, and put relevant expenses into an Excel sheet, saving hours; he plans to review subscriptions next.

    Claude Code

  • CC

    Do equity research with Claude Code without coding

    A non-engineer keeps research in a folder of plain-text files managed with Obsidian and uses Claude Code for equity research.

    Claude Code

  • ··

    Run persistent financial research with an agent

    LangAlpha is a Claude Code-style agent for investing research that keeps persistent workspaces and memory so analysis such as models and comps can be updated across sessions.

    Custom agent

  • CR

    Build a personal research wiki from papers and articles

    Cursor Agent writes and maintains interlinked markdown pages from user-supplied sources, summarizing and cross-referencing, with Obsidian used to browse.

    Cursor

  • GB

    Run multi-step social media research on a cloud computer

    Reviewers used Grok Bot's cloud computer and X data for multi-step social-media research they found useful, work previously split across tools.

    Grok Bot

Keep browsing

All 219 Claude Code use casesAll 109 Research & Knowledge use cases

Get 5 like this every morning

The best things people got an AI agent to do, each with the prompt to try it.

All use casesAgentsTopicsNewRSSAboutSponsorPrivacy
Sponsors
VCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor us
VCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor usVCVibe Coding Academy: Master AI and automate your lifeS/Ship/It Weekly: #1 AI newsletter on planet Earth+Your logo here: sponsor us