Small milestone: Obolus is now available as a ChatGPT App 🚀

Obolus started as a simple question I wanted to answer for myself:

“Where does the same salary actually go furthest after taxes?”

That turned into:

- a payroll calculation engine

- cross-country salary comparisons

- a public API

- OpenAPI + MCP support

- Pipedream integration

- and now a ChatGPT App

The interesting part wasn’t just the tax math.

It was making different payroll systems comparable enough that a user — or an AI agent — can ask a simple question and get a structured answer.

Example prompt:

“Where does a €60k salary go furthest across countries?”

Still very early, but this feels like an important shift from “tool” toward “platform/infrastructure”.

Curious if others here are also experimenting with ChatGPT Apps / MCP as a distribution channel.