Yes, it's self-hosted on your Cloudflare account with authentication token protection.

second-brain-cloudflare

Name: second-brain-cloudflare
Rating: 2.3 (61 reviews)
Author: rahilp

by rahilp·★ 61·Score 46

Self-hosted MCP server providing personal memory layer across AI tools like Claude and ChatGPT.

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Overview

Second Brain is a memory layer that works across every AI tool you use. It stores information once and allows you to recall it in Claude, ChatGPT, Cursor, or any MCP client. Built on Cloudflare Workers with D1 SQLite and Vectorize, it offers five tools: remember, append, recall, list_recent, and forget. The service is self-hosted on Cloudflare's free tier with one-click deployment.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

you:Personal knowledge management across multiple AI assistants

you:Project context tracking that works with any AI tool

you:Semantic search for notes and ideas across conversations

you:What's the storage limit?

you:Can I migrate my data if I stop using Cloudflare?

you:Is my data private?

When to choose this

Choose this MCP server if you want a consistent memory layer across multiple AI tools and are looking for a simple, self-hosted solution that requires minimal technical setup.

When NOT to choose this

Avoid this if you need enterprise-grade security features, require high-scale data processing, or want the ability to easily migrate data between different providers.

Tools this server exposes

5 tools extracted from the README

remember
Store anything — ideas, decisions, project context
append
Add updates to existing entries without creating duplicates
recall
Semantic search with recency bias — finds things by meaning, prioritizes fresh info
list_recent
Browse recent memories chronologically
forget
Delete an entry and all its chunks

Comparable tools

mem0-mcpmcp-mindermcp-filesystemobsidian-mcpsqlite-mcp

Installation

Click the 'Deploy to Cloudflare' button in the README
During deployment, set an AUTH_TOKEN (you can use a memorable phrase or generate a secure one)
Save the token as you'll need it to connect AI clients

Connect Claude Desktop by adding to claude_desktop_config.json:

{
  "mcpServers": {
    "second-brain": {
      "command": "npx",
      "args": ["@modelcontextprotocol/server-cloudflare", "https://<your-worker-url>"],
      "env": {
        "AUTH_TOKEN": "<your-token>"
      }
    }
  }
}

For other clients, follow the specific instructions in the documentation.

FAQ

What's the storage limit?: The free Cloudflare tier is sufficient for personal use with generous limits on D1 and Vectorize services.
Can I migrate my data if I stop using Cloudflare?: Data is stored in D1 SQLite which can be exported. However, there's no built-in migration tool at this time.
Is my data private?: Yes, it's self-hosted on your Cloudflare account with authentication token protection.

On Hacker News

Recent discussion from the developer community.

Self-hosted AI memory with web dashboard – Cloudflare Workers, D1, Vectorize▲ 2
Story by rahilpirani · 2026-05-13

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GitHub →

Last updated 2026-05-17 · Auto-generated from public README + GitHub signals.