I build small, inspectable tools for data, research, and reliable agents.
A browser tool for looking at CSV observations, missing values and gaps. Open a file, choose two columns, and export a plot and an inspection report. File processing stays in the browser.
Open Scope → · Source and method
IRIS Driftline — a read-only operations workspace for InterSystems IRIS. It uses the official SysAdmin API to surface scheduled work, classify task-history errors, and compare configuration snapshots. Tested against IRIS Community Edition.
GeoReconcile — an offline Python tool for comparing IP2Location CSV releases. It finds exact IPv4/IPv6 ranges whose location labels changed and exports JSON or a self-contained HTML report. Tested with synthetic fixtures and the provider's public samples.
Done or not? — six synthetic agent export traces and a small CLI for examining what “completed” means at each step. Source.
YeNo paper-volume bot — a bounded trading-decision service built for a paper-market challenge. It exposes a local /decide endpoint, includes state tests, and has no route to place real trades.
AgenticJobs contributions — merged fixes to search ranking, CLI file handling, and Markdown parsing in an open-source agent job board.
I can help with data inspection, format conversion, reproducible reports, and small browser tools. Describe the input and the output you need, or email chengjacky073@gmail.com for a private project enquiry.