Builders
You (or your AI) write the app. Core is login + memory.
Every new app usually means a new account and another private copy of the same person. Skip that. Copy the agent guide, register the OAuth app on Core Connect, mint tool keys on your Prifina Account when you need MCP, and build the experience in Cursor, Lovable, or v0. We do not host your app runtime.
the usual shape
App → account → personal database
You carry the cost of holding personal information, the user starts from nothing, and everything they build up is stuck inside your product.
with Core
App → Connect → personal backend the user controls
Core provides Sign in and the personal layer. You build the experience. The user arrives useful from the first screen.
What Core gives your app
Persistent personal context
Your app opens and the person is already there.
Permissions and scopes
The user grants what your app needs, and can withdraw it.
Provenance
What you write is attributed to your app, with its source kept.
Write back
What the user settles in your app can be used elsewhere later.
Agent definitions
Agents the user already defined, usable in your runtime.
Portability
The user can move Core providers without abandoning your app.
Copy the agent guide. Register apps on Core. Mint keys on ID.
Paste /connect/for-agents.md into Lovable, v0, or Cursor. The human registers the OAuth app on Core → Connect an app and pastes only client id + redirect URI into the chat. Tool keys mint only on id.prifina.com/keys.