piotrlangowski/Sherpa

Sherpa — AI Feature ROI Calculator for SaaS

Should we ship that AI feature? Sherpa answers with CFO-grade numbers instead of gut feeling: it combines a cohort-based revenue model with an LLM token cost engine and CAPEX/OPEX tracking, and turns them into NPV, payback period, a discounted Profitability Index and a guarded IRR — computed on a contribution-margin basis and presented as an upper/lower range — locally, with nothing leaving your machine.

Built for product leaders (CPO/RevOps) at SaaS companies, it also ships as an MCP server, so you can model scenarios conversationally from Claude Desktop: "create a scenario with 5,000 users, 4% churn and a $150 ARPU chatbot rollout".

Disclaimer

Yes, it is vibecoded, but the problems it tackles are real. Test it yourself. Altough I am not a SWE I have given Sherpa all the technical attention I could think of.

Sherpa requires Claude Desktop to run.

Why Sherpa

By this name I wanted to convey two things:

1. This is a journey that is hard and complicated. We have many tools nowaydays to make it easier, but we still go into the uknown (be it everest or todays markets) and only our prepardness makes it successful.
2. This is a private exeperience. Here are you, your data and your decisions in this specific moment in time. It is your soliloquy.

Work your way Work as a Claude Desktop App user connecting to a permanent data source that lives only on your computer, locally, private

<img width="1420" height="798" alt="image" src="https://github.com/user-attachments/assets/426c5a58-ad3b-4c83-add0-8aff93ad4648" />

or as a separate App with its own UI that launches from Claude with a command: