Real AI agent use cases, with sources and setup prompts
Personal wikis, Obsidian vaults and knowledge bases people let AI agents read, file and maintain, so they stop re-explaining their life in every chat. 14 matching use cases below, each with a public source.
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Part of a Hermes Agent OS: a voice agent that pulls recent context from Obsidian when asked what changed in your notes, with chat profiles for different tasks and an agent that gathers news.
A builder uses Grok Bot every day with Obsidian, where it operates on his vaults through the miyo MCP, keeping data ownership and file-over-app.
The author runs scheduled Cursor cloud agents every day: one scrapes Wispr, Zoom and Gemini meeting transcripts into Obsidian, one triages Gmail, one updates a CRM with new leads, and one builds a morning briefing that Grok Bot prints out.
Claude Code, Codex, Grok Bot and five more agents share one Obsidian vault as memory. Every night an agent fixes outdated facts and links loose notes.
An n8n workflow where Claude Code works with Obsidian, Gemini classifies and ChatGPT summarizes emails from Google Drive.
Connected Claude Desktop to his Obsidian vault over MCP and set up an agent flow that synthesizes research from his notes.
Built OpenKnowledge, an open-source AI-first alternative to Obsidian and Notion.
Built a Markdown-and-Git wiki in the Karpathy style that coding agents maintain for you.
Built Atomic, a local-first personal knowledge base augmented with AI.
Based on Karpathy's second brain idea, he runs three Grok Bots in one group chat: a reader saves every link, PDF and voice note to raw/, a librarian rewrites the 10 to 15 wiki pages each new source affects, and a checker hunts for contradictions every night.
A researcher keeps an "LLM wiki" with 399 knowledge nodes that runs as a single agent skill, giving agents persistent memory without flooding their context. He built it while using Claude Code to research coding agents like Claude Code, OpenCode, Pi and Aider, and links findings to papers.
A 20-minute recipe for using Claude Code to remember your life: make a folder, launch Claude Code inside it and keep a small CLAUDE.md file that tells it how to file and recall things.
Built an Obsidian-backed second brain for Claude Code mods, then used it to ship a snake game inside Claude Code in four minutes.
Sygal converts PDF, Word, Excel, images, web pages and even YouTube links into clean Markdown and JSON locally, so documents drop into a prompt or knowledge base with far fewer tokens.
How to make faceless YouTube videos with AI · How to automate work with n8n and AI · How to vibe code an app with Claude Code · How to build AI agents for SEO and ads · How to run multiple coding agents together · How to build an MCP server for AI agents · How to add memory to coding agents · How to secure vibe-coded apps and agents · How to observe and debug AI agents · How to build agent memory and context layers · How to control coding agents from your phone · How to add payments to vibe-coded apps · How to run local LLMs with AI agents · How to set up Grok Bot agents for real work · How to build with Gemini 4 Argon and Gemini agents · How to use AI agents for taxes, bills and budgets · How to make AI video ads and Reels with agents · How to set up Hermes Agent workflows · How to vibe code a game with AI · How to replace SaaS subscriptions with vibe-coded tools · How to use AI agents for errands, calls and shopping · How to use Cursor agents and automations · How to make 3D scenes and models with AI and Blender · How to use Claude Code skills and plugins · How to cut AI coding agent costs and token use · How to automate a small business with AI agents · How to compare AI models on the same prompt · How to build hardware projects with AI agents · How to make AI music videos and songs · How to use AI agents with Obsidian and your notes · How to build apps and games for your kids with AI · How to use ChatGPT for real projects and everyday tasks · How to make AI agents ask for approval before they act · How to build AI trading and investing agents · How to build AI agents that make and answer phone calls · How to plan meals and groceries with AI agents · How to use AI agents for fitness and health · How to undo, checkpoint and stop runaway coding agents · How to use AI agents for job hunting · How to automate social media posts with AI agents · How to build a smart home and voice assistant with AI agents · How to make money with AI agents · How to build a website with AI agents · How to use AI agents for research and science · How to build an iPhone or Android app with AI · How to automate email and your inbox with AI agents · How to use AI agents for Linux, servers and homelabs · How to build Telegram, Discord and WhatsApp bots with AI · How to research memecoins and crypto with AI agents · How to remove ads and bloatware from your smart TV with AI · How to self-host AI agents on a Raspberry Pi, Mac mini or homelab · How to learn anything with an AI tutor · How to reverse-engineer and revive old devices with AI
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