Real AI agent use cases, with sources and setup prompts

Use one Obsidian vault as shared memory for eight AI agents

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 Every night an agent fixes outdated facts and links loose notes.

$30/mo1-2 hoursIntermediateSource linked

Source

@eugeniu_ghelbur on X · 2026-10-14

Written in our own words. Credit to the original author. Link checked 2026-10-16.

What they did

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 Every night an agent fixes outdated facts and links loose notes.

Result (as claimed)

Free setup with 4,700+ GitHub stars and a full manual.

Tools they used

ObsidianClaude CodeOpenAI CodexGrok Bot

Cost: Claude Code: free plan, paid from $17/mo; OpenAI Codex: free plan, paid from $8/mo; Grok Bot: from $30/mo.

Set it up

  1. Gather your sources

    Collect the papers, notes, links or files you want to work from in one place.

  2. Load them into the tool

    Open Obsidian, Claude Code, OpenAI Codex, Grok Bot and add your sources. Keep the original files so you can check claims later.

  3. Ask focused questions

    Ask for summaries, comparisons or connections with citations to the source passages.

  4. Verify and save

    Spot check claims against the sources, then save the output as notes you can reuse.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Use one Obsidian vault as shared memory for eight AI agents
What the original author did: 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 Every night an agent fixes outdated facts and links loose notes.
Reported result (as claimed by the author): Free setup with 4,700+ GitHub stars and a full manual.
Source: https://x.com/eugeniu_ghelbur/status/2110437592885854617
Tools they used: Obsidian, Claude Code, OpenAI Codex, Grok Bot
Category: Research & learning

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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