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 your agent can see

  • Real-time health signals: sleep, heart rate, HRV, activity, and recovery — updated continuously
  • Behavioral context: daily rhythms, routines, locations, and calendar — so your agent knows when and where
  • Consent-scoped access: users choose exactly what to share and with whom — privacy built into every API call
  • Custom annotations: user-defined tags, preferences, and self-reported context your agent can act on

What builders are creating

  • AI coaches that adapt to real recovery data, not generic templates
  • Personalized apps that skip onboarding because the agent already knows the user
  • Productivity agents that react to life events and schedule around energy, not just calendars
  • Companion experiences that bridge wearable data, media history, and personal preferences into one coherent picture

How it works

  1. Your user connects their data through Fulcra's consent flow — one tap, full control.
  2. They choose exactly what to share: health, location, calendar, media — granular, revocable scopes.
  3. Your agent calls the Life API to read real-time context via REST, MCP, or SDK.
  4. Context updates flow continuously as the user's day unfolds — no polling, no stale data.
  5. Built-in encryption, per-user OAuth, audit logs, and instant revocation keep trust at the center.

Read the docs at docs.fulcradynamics.com or grab an API key to start building.