Cited Market Brief Agent
A region-aware morning-market web app and an audit-ready, evidence-backed brief engine in one. The radar surfaces a market clock, a FRED overnight-risk rail, most-read finance news with AI summaries, and a Taiwan ETF-vs-benchmark attribution tool; the brief engine generates company briefs from SEC EDGAR + FRED where every claim is validated against a stored source span before it ships, with a click-through evidence ledger. Four localized editions (Taiwan, Korea, UK, EU).
- TypeScript
- React
- FastAPI
- Python
- Vercel
- Docker
What I built
A full-stack market web app with two surfaces on one page: a consumer Morning Market Radar and a professional evidence-backed brief engine. It started as a daily market tool for a family member who invests in Taiwan and grew into a portfolio-grade full-stack project — running entirely on free / end-of-day public data, with four localized editions (Taiwan, Korea, UK, EU).
Morning Market Radar
An Asia → US market clock; a FRED-backed overnight-risk rail (VIX, USD/TWD·JPY·CNY, broad dollar, WTI, US 10-year); most-read finance news over day / week / month windows with AI summaries (Traditional-Chinese key points for the Taiwan edition); and a Taiwan ETF-vs-TAIEX attribution tool — paste holdings and it breaks performance into contributors, drags, and sector bars.
Evidence-backed brief engine
Cited generation from SEC EDGAR filings and FRED/ALFRED macro series, built so a claim without a source span is dropped — every line that ships is backed by primary evidence. A click-through evidence ledger exposes the quote, document, section, accession number, and checksum behind each claim.
Why it matters
A research brief is only useful if you can trust it. This makes the brief auditable: every claim traces back to a primary source, so a reviewer can verify it rather than take it on faith — the opposite of an LLM that asserts confidently and cites nothing.
Honest limits
It runs on free / EOD data tiers (TWSE, FRED, NYT Most Popular, RSS, SEC EDGAR) — great for a personal morning digest, not a real-time terminal. The public demo runs on built-in demo data with no backend; the full live-data app runs privately and is available on request. It is not a commercial product, and nothing it produces is investment advice.