agent-second-brain

An always-on second brain you talk to. Voice note in Telegram → typed, linked knowledge in your Obsidian vault. Runs 24/7 on a $5 VPS and the Claude subscription you already pay for — zero per-token API bills.

🇷🇺 Русский • Полная инструкция • VPS guide • autograph engine

[!IMPORTANT] **Since June 15, 2026, headless claude -p runs bill against a separate paid Agent SDK credit.** v3.0 sidesteps that completely: it drives one long-lived interactive Claude Code session — the same thing you run in a terminal, used exactly the way the subscription is meant to be used. No headless calls in the hot path (enforced by a CI guard), no per-request billing, no surprise invoice.

Why I built this

Every productivity system dies the same way. You set it up on a Sunday, use it for two weeks, then slowly stop — because maintaining the system is more work than the work itself. Voice memos you never re-listen to. Ideas that drown in chat history. A vault of markdown files that nobody, including you, can navigate a month later.

The fix isn't another app. It's removing the organizing step entirely: you talk, the agent files. And it has to be yours — I wasn't going to pipe my private notes, clients, and goals through somebody's SaaS. Everything here runs on your own server, lands in your own Obsidian vault as plain markdown, and is small enough to actually read before you trust it with your life.