nayan roy

Case studies

Five projects, and the decision at the centre of each.

Feature lists are cheap. These are the choices I’d defend in a code review, including the ones I got wrong twice first.

Aug 2026 – Mar 2027

Bhoomi

Earth observation processing

Draw an area, search Sentinel-2 through STAC, run an index or a two-date change detection server-side, and get back a validated Cloud-Optimized GeoTIFF. One API request in place of a seven-step desktop GIS workflow.

Published on npm

gitto

Developer tooling

Plain-language Git and GitHub in the terminal. Save, upload and sync instead of add, commit and push — with every Git or GitHub error translated into a sentence you can act on.

v1, pre-release

sealpin

Supply-chain security

npm audit for the MCP servers your AI agent trusts. A supply-chain and prompt-injection scanner that finds which servers can read your SSH keys, which changed their tool definitions since you approved them, and which hide instructions to the model inside tool descriptions.

Sandbox only

PayHub

Payment orchestration

UPI-first payment orchestration over Razorpay and Cashfree. One unified API, decline-code-aware failover between processors, and webhook events from different providers normalized into a single internal schema.

Shipped for real shops

Jewellery Billing

Product

A mobile-first gold billing app for Indian shop owners, built around a single number: a bill in under 30 seconds. Live price breakdown, PDF invoice, WhatsApp share.