My Projects

AI agents, full-stack apps, blockchain DApps, and mobile experiences

๐Ÿข
Live

Enterprise Knowledge Agent

Tiered enterprise knowledge platform built on a self-built orchestrator rather than an off-the-shelf framework: every question is routed to curated exact Q&A, cited document RAG, or governed Text2SQL. Document RAG runs MinerU parsing, heading-aware chunking, hybrid vector + full-text retrieval, RRF fusion, and cross-encoder reranking capped at top-5 (+14pp over fusion alone). The model never emits raw SQL โ€” it only adjusts filters and columns inside human-reviewed templates, giving 100% (20/20) end-to-end accuracy.

FastAPI
Pydantic
SQLAlchemy
React
TypeScript
PostgreSQL + pgvector
MinerU
AWS EC2
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โ›๏ธ
Live

ASX Mining Financial Chatbot

Production-grade ASX mining RAG chatbot powered by a LangGraph multi-agent supervisor graph. Hybrid dense + BM25 retrieval over 5 companies ร— 3 years of annual reports, vision-aware PDF ingest (Gemini), two-tier semantic cache, adaptive clarification, SSE streaming, and PostgreSQL conversation persistence.

LangGraph
FastAPI
Next.js 15
PostgreSQL
ChromaDB
Docker
AWS EC2
Vercel
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๐Ÿง 
Live

LangGraph Research Assistant

Full-stack multi-agent research system built with LangGraph. Nested graphs, human-in-the-loop approval, parallel analyst interviews via Send(), dual RAG (Tavily + Exa), SQLite checkpointing, and streamed progress โ€” deployed on Railway + Vercel.

LangGraph
LangChain
FastAPI
React
Docker
Railway
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๐ŸŽก
Completed

Wheel on Chain

Blockchain-based lucky wheel game platform on Ethereum with Chainlink VRF for provably fair randomness, NFT lottery system, and real-time WebSocket updates.

Next.js
Solidity
Chainlink VRF
Ethereum
WebSocket
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๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ
Completed

FamHive

Full-stack family management platform with scheduling, growth tracking, rewards system, billing, and Stripe subscription payments. Serverless architecture with Cloudflare Workers.

Next.js 16
React 19
Cloudflare Workers
Stripe
Hono
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๐Ÿ“š
Completed

Gula Stories

Safe, ad-free bedtime story app for children with age-group recommendations, multiple voices, and vivid avatars โ€” shipped solo to both the App Store and Google Play. Backed by a highly automated AI storybook pipeline: generating and refining stories, deriving image prompts, driving the browser to render illustrations, watermarking, and uploading finished books to the cloud.

React Native
iOS
Android
AI Pipeline
Offline Download
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๐ŸŒ
In Progress

Personal Website

A personal website built with Next.js and React to showcase my projects and blog.

Next.js
React
Tailwind CSS
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๐Ÿ“ฐ
In Progress

My Blog

A simple blog system built with Next.js and Markdown.

Next.js
Markdown
Tailwind CSS
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ยฉ 2026 Tony Ye. All rights reserved.