Second Brain

Self-hosted memory layer shared by Claude, ChatGPT, Cursor and other MCP clients

PlatformWebfree

Second Brain is an open-source memory layer that stores notes, decisions and preferences once and makes them available to any AI tool that speaks MCP, including Claude, ChatGPT and Cursor. It addresses having to re-explain the same context in every tool, and it runs in the user's own Cloudflare account so the memory is not held inside one AI platform.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Second Brain - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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