agent-second-brain
An AI second brain that runs 24/7, automatically organizing knowledge into Obsidian through voice conversations on Telegram.
Install & Use
Copy this prompt and send it to your AI assistant (Claude / Cursor / TRAE / Codex / WorkBuddy etc.) to auto-install:
Help me install this AI Skill: agent-second-brain. It is used for: An AI second brain that runs 24/7, automatically organizing knowledge into Obsidian through voice conversations on Telegram. Full Skill content: https://321skill.com/skills/agent-second-brain/raw/index.md Read that page and install it.
The prompt includes a link to the full Skill content. You can also view the full content.
Have you ever given up on note-taking because of the hassle of maintaining a note system? Agent Second Brain solves this pain point. It allows you to simply send voice messages, images, or files via Telegram, and it will automatically transcribe, organize, and link the content to your local Obsidian knowledge base, completely eliminating the need for manual organization.
Using it is very simple: after deploying it on a configured VPS, you just send voice messages, forward articles, or share images in Telegram as you normally would. The AI automatically processes this content, extracts key information, generates structured Markdown notes, and intelligently links them to related concepts in your knowledge base.
It is particularly suitable for knowledge workers, content creators, and project managers who have a large amount of fragmented ideas, meeting notes, or reading materials to organize but lack the time or energy for manual filing. By using voice—the most natural input method—it significantly lowers the barrier to entry for recording.
Note that this Skill requires you to have your own Claude subscription (for conversation and reasoning) and a VPS (for 24/7 operation), and you must already have an Obsidian vault. It processes your private data, with all workflows completed on your own controlled server, ensuring privacy and security.
Key Features
The core differentiator lies in its unique cost model: by driving a persistent Claude interactive session to handle requests, it completely avoids token-based API billing, consuming only your existing Claude subscription quota, enabling near-zero marginal cost for continuous operation.
Limitations
Not suitable for users without a Claude subscription, unwilling to maintain their own VPS server, or without existing Obsidian usage habits.
FAQ
Is the running cost high?
The main costs are the VPS (around $5/month) and your existing Claude subscription. Processing requests themselves do not incur additional API fees.
Is my data safe?
All data processing occurs on your own VPS, with the final storage in your Obsidian vault. It does not pass through any third-party SaaS services.
Installation guide for AI assistants
If your AI coding assistant (Claude Code, Cursor, TRAE etc.) can see this page, send it this message to auto-install:
Visit https://321skill.com/skills/agent-second-brain/raw/index.md to read the original Skill definition (Markdown format) for agent-second-brain, and install it according to the instructions.
Raw Markdown URL for AI: /skills/agent-second-brain/raw/index.md