BUILDERS PROGRAM
Building a community for Human-Aware AI.
Synheart’s developer ecosystem is one open standard, a set of native SDKs, and the tooling around them everything you need to read structured human state in your product. Install one SDK, add the pieces your product needs, and skip the ones it doesn’t.
WHAT A FOUNDING BUILDER DOES
Learn, build, demo, graduate.
Human State Interface Infrastructure
A stack for building apps that adapt to human cognitive and physiological states.
Local-First & Private
Inference runs on-device. No cloud processing, no biometric lock-in, and full control over data.
Open SDK & Runtime
Use the HSI SDK, prototype locally, and scale to production when needed.
Research & Production Ready
Designed for production and research with realtime ingestion, analytics, and scalable pipelines.
- Flutter SDK
- React SDK
- REST API
- Life API
THE CODE WE BUILD BY
Five rules, and they are the point.
State, never content.
How you interact, not what you type.
Detect, never diagnose.
Change, honestly named — no labels, no verdicts.
On the person’s terms.
State stays on-device; no access without consent.
Dignity is not optional.
Designed for tough days, ensuring privacy.
The human stays in the loop.
We serve judgment, never override it.
THE SELF-SIGNAL GAP
The first cohort is small, and invite-first.
Twenty people. You get early SDKs, a line to engineers, a Founding Builder badge, and your name on the wall. Years later, it will signify your contributions.
- Earliest access to the SDKs
- A direct line to our engineers
- A Founding Builder badge
- Your name on the wall of first builders
THE SELF-SIGNAL GAP
Apply to the Founding Cohort
Under two minutes. Tell us who you are, point us at your GitHub, and tell us what you’d build.