Wei Tan

A local-first Slack agent that intercepts @mentions, replies in your voice via Claude Code, and continuously distils your communication patterns and facts into a personal knowledge base — zero message history in the cloud.

A custom publishing platform with per-channel content visibility, scoped full-text search, and AI-assisted content management via an MCP API — built on Next.js, Cloudflare Workers, D1/R2, and an OAuth 2.0 + PKCE auth server.

A Master's thesis project implementing decentralised document attestation on Ethereum — multiple parties co-sign a file's SHA-256 hash on-chain, proving co-possession without uploading the file or trusting a central notary.