Build agents and apps that know who they're talking to.
The Persona API gives your application a structured, real-time picture of every consenting user. Sleep patterns, activity rhythms, location, schedule, preferences, all through Fulcra's privacy-first personal data layer.
What's in a persona
- Real-time biometric state: sleep last night, recovery today, energy patterns this week
- Behavior patterns: activity rhythms, locations, schedule
- Preferences and consent scopes: what the user has shared, with whom, and for how long
- Custom annotations: what your user has tagged about themselves
What you can build
- Coaches grounded in the user's real recovery and behavior, not generic templates
- Health apps that skip the onboarding survey because you already know them
- Productivity agents that schedule around real energy patterns, not just calendar slots
- Wearable companion apps that bridge data from devices you don't own
How it integrates
- Your user installs Context or grants consent through your app.
- They choose what to share: granular, revocable scopes.
- Your app reads a structured persona via REST, MCP, or SDK (JavaScript, Python, Swift).
- Updates flow in real time as their data changes.
- Per-user OAuth, audit logs, and full revocation built in.
Read the docs at docs.fulcradynamics.com or grab a Fulcra API key to start building.
