StainNet AI

The dye pack for Web3. A fraud detection API for Ethereum: send an address, get a colour. Red is a verified scam. Gold is suspicious. Teal is clean. Each answer comes with a confidence score and a reason.

There are two services behind the API. A gateway handles keys, rate limits and usage. Behind it, the second checks the address against a blocklist, pulls its transaction features and scores it with a model. FastAPI and TensorFlow at the back, Next.js at the front.

It started as a weekend project and launched in July 2025. It is paused now, and the site says coming soon. A failed experiment. It might be released again.

What I learned

• Building was not the hard part. I asked the internet how to get over the fear of launching. I had already posted the answer five days earlier: just launch it.
• Marketing is tricky. By December 2025 the plan was to relaunch and focus on it. That has not happened yet.
• Most scam checkers turned out to be blocklists. This one has a model.