rahilp/second-brain-cloudflare is a public GitHub repo for a self-hosted shared memory layer that connects Claude, ChatGPT, Cursor, Codex, and other MCP clients. The README says it stores memories in the user's Cloudflare account using Workers, D1 SQLite, Vectorize, Workers AI, KV, and TypeScript. Setup centers on an AUTH_TOKEN, OAuth-based MCP connection, client instructions, browser and Obsidian capture paths, and shell or PowerShell scripts for connecting AI clients. The repo has 479 stars in the retained GitHub view and recent commits mention contradiction-aware recall scoring, exact tag-scoped recall, Claude Code hooks, and fixes for fabricated recall insight prompts.