为什么值得关注

它展示了全新的无状态 MCP 规范（2026-07-28），支持多轮确认（MRTR）删除流程，无需 API 密钥或云账户，并提供对观看历史的私有全文搜索，结果精确到秒。

适合谁使用

观看大量教程和演讲的知识工作者
希望搜索播客内容的听众
探索新无状态 MCP 规范的开发者
需要快速引用视频内容的研究人员

典型使用场景

向 AI 助手提问‘那个视频关于薪资谈判说了什么？’，并获得带时间戳的回答
在整个 YouTube 观看历史中搜索特定主题
获取最近观看或收听内容的每周摘要
通过 MRTR 用户确认安全删除某条视频记忆

项目优势

隐私优先：所有数据存储于本地 SQLite，无需云服务或 API 密钥
YouTube 零配置：无需密钥即可直接获取字幕
基于 BM25 的全文搜索，分割为带时间戳的片段，可跳转到精确时刻
展示了前沿 MCP 特性，如无状态架构和多轮确认删除

使用前须知

目前仅支持 YouTube 和播客（通过 RSS + 本地 Whisper），其他来源尚未支持
无字幕的 YouTube 视频无法索引
播客导入需要安装可选的 Whisper 依赖并进行本地处理

README 快速开始

🧠 Second Brain MCP

Remember everything you watch and listen to.

A Model Context Protocol server that turns YouTube videos and podcasts into a private, searchable memory — built on the brand-new stateless MCP spec (2026-07-28).

Paste a link once. Ask about it forever.

"What did that video I watched last month say about salary negotiation?"

🧠 → "At [12:43] in Never Split the Difference — Chris Voss, he says never to accept the first offer without anchoring high…" — with a deep link that jumps to the exact second.

Why

You watch hours of talks, tutorials, and podcasts — and a week later you can quote none of it. Browser history remembers that you watched something; nothing remembers what it said. Second Brain gives your AI assistant total recall over everything you've ever watched or listened to:

🎯 Ask across your whole watch history — answers come back with timestamps and deep links to the exact moment.
🔒 Private by design — one local SQLite file. No cloud, no accounts, no API keys. Podcast audio is transcribed locally.
⚡ Zero-key ingestion — YouTube captions are fetched directly; nothing to configure.
🗑️ Nothing is deleted without you — destructive operations use the spec's new multi round-trip (MRTR) approval flow.

Quickstart

1. Install

Option A — as a tool, straight from GitHub (recommended):

uv tool install git+https://github.com/ravishu5/second-brain-mcp

This installs the second-brain command into ~/.local/bin. Find its absolute path — you'll need it below:

which second-brain     # e.g. /Users/you/.local/bin/second-brain

Option B — from a local clone (for hacking on it):

git clone https://github.com/ravishu5/second-brain-mcp
cd second-brain-mcp
python3 -m venv .venv && .venv/bin/pip install -e .

Your binary is then at /.venv/bin/second-brain.

2. Connect a client

Always use the absolute path to the binary. GUI apps (like Claude Desktop) don't inherit your shell's PATH, so a bare second-brain command often fails with "Failed to spawn process: No such file or directory".

Claude Code

claude mcp add second-brain -- /absolute/path/to/second-brain

Claude Desktop — Settings → Developer → Edit Config, then add:

{
  "mcpServers": {
    "second-brain":

second-brain-mcp