Sailesh Sivakumar
Software engineer. I take products from early idea to live — web, backend, iOS, and onchain — and I ship a lot.
Since March 2025 I've been the lead developer of $QR (qrcoin.fun), a daily onchain auction for attention — built with founder Jake from an early prototype into the #1 mini app on Farcaster. I also build Magic Cabinet, an AI kitchen-design and quoting platform. On the side: the frontier — AI agents, onchain payments, and zero-knowledge privacy — as hackathon projects, a couple of which have won.
Earlier: full-stack at Eviden (Parallon / HCA); Informatics at the University of Washington. Based in Kolkata.
Building
Work
all →A private prediction market on Aleo where bet direction stays hidden. · Aleo Privacy Buildathon — 765 USDT in grants
A civic memory map for Kesennuma, Japan — geotagged community stories on a 3D map. · 🏆 Winner — Kesennuma Hackatsuon 2025
Conditional group money — one link that pays out together or refunds everyone, automatically.
Private multilateral netting + atomic settlement for trade finance, on Canton.
Turns raw SWAN-protocol onchain agent data into a readable narrative of agents, diaries, and artifacts. · 🏆 1st place — Based House FarHack
Open source
Tools I've built
One hotkey that grids every terminal window and surfaces the ones running Claude Code.
Natural-language browser agents on Browserbase + Stagehand.
A free, open course rebuilding a Claude Code masterclass on native primitives.
A Jina Reader API web scraper — concurrent single/multi-page crawling to clean Markdown, with rate limiting.
Merged contributions
fix(sakana): parse weekly/5-hour reset time as UTC, not device-local
steipete merged it — “Reviewed the parser boundary: server-rendered reset timestamps are now interpreted as UTC before conversion for display. Thanks @ss251 for the strong reproduction and focused fix!”
feat(sakana): surface pay-as-you-go credit balance
steipete merged it — “Subscription quota remains authoritative; optional PAYG failures are bounded and contained, and both fetch and render obey the optional-usage setting. Thanks @ss251!”
feat: add mouse button as a recording trigger
Starmel merged it
Fix Claude same-dir account-switch history mis-attribution (#1886)
steipete merged it — “This lands the history-isolation portion only. #1886 remains open for the separate visible-menu account-selection problem. Thanks @ss251!”