Second Brain

Name: Second Brain
Author: rahilp

@rahilp

Second Brain について

Self-hosted semantic memory layer for Claude and MCP-compatible AI clients. Store notes, search by meaning not keywords, and recall relevant context automatically. Built on Cloudflare Workers, D1, Vectorize, and Workers AI. Runs on the free tier. One-click deploy.

#memory #claude #mcp #cloudflare #semantic-search #self-hosted #vectorize #ai

基本情報

カテゴリ

クラウドとインフラ

トランスポート

stdio

公開者

rahilp

投稿者

Rahil Pirani

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "second-brain": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://<your-worker-url>/mcp"
      ]
    }
  }
}

ツール

ツールは検出されませんでした

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is Second Brain?

Second Brain is a self-hosted memory layer for Claude and any MCP-compatible AI client. It gives your AI persistent, searchable memory across sessions using semantic search instead of keywords.

How to use Second Brain?

Deploy Second Brain with one click on Cloudflare’s free tier. Once deployed, it works with Claude Desktop, Claude Code, and claude.ai. No explicit installation commands or config keys are documented in the README.

Key features of Second Brain

Five tools: remember, recall, list_recent, forget, append
Semantic vector search by meaning, not keywords
Duplicate detection blocks near-exact matches before storage
Long notes are automatically chunked before embedding
Built on Cloudflare Workers, D1, Vectorize, and Workers AI
Runs entirely on the free tier with one-click deploy

Use cases of Second Brain

Persistent memory across chat sessions for Claude
Searchable knowledge base without exact keyword matching
Tag-based chronological browsing of stored notes
Updating previous entries with new timestamps
Deleting outdated or incorrect memory entries

FAQ from Second Brain

How does Second Brain store and search memory?

Notes are embedded using bge-small-en-v1.5 on Workers AI and stored in Cloudflare Vectorize. Long notes are chunked before embedding so each section gets its own vector. Recall performs semantic vector search by meaning.

How does duplicate detection work?

Duplicate detection blocks near-exact matches before storing a new note. This prevents redundant entries when the same information is provided again.

What infrastructure does Second Brain require?

The stack uses Cloudflare Workers, D1, Vectorize, and Workers AI. Everything deploys automatically with one click and runs on Cloudflare’s free tier.

Which AI clients are supported?

Second Brain works with Claude Desktop, Claude Code, and claude.ai, as well as any MCP-compatible AI client.

What are the five tools and what do they do?

The tools are: remember (store a note with duplicate detection), recall (semantic vector search by meaning), list_recent (chronological listing by tag), forget (delete entry and all its chunks), and append (update an existing entry with a timestamp).