01
Live builder sentiment
Every AI story and comment on Hacker News is scored for direction and conviction minutes after it posts. The HNAI index moves when the people building the technology change their minds.
Undercurrent · HNAI
What builders feel before markets move.
Undercurrent turns the Hacker News conversation about AI into a quantitative signal: builder sentiment, scored and indexed in real time, delivered to your models over an API.
Your personal organization is created on first sign-in.
02
Custom indices
Scope a signal to the segments and companies you cover, weight the drivers that matter to your thesis, preview the effect, and publish it under your own symbol.
03
API + webhooks for your models
Pull quotes, history and contributors over a versioned REST API, or receive a signed webhook the moment an index crosses your threshold.