Skip to main content
PrefID Hero

​
What is PrefID?

PrefID is an identity infrastructure platform that creates a portable preference graph — a structured representation of who you are, what you like, and how you work.

Quick Start

Get up and running in 5 minutes

Core Concepts

Understand how PrefID works

OAuth Integration

Authenticate users securely

API Reference

Complete endpoint documentation

​
The Problem We Solve

Every AI we interact with starts from scratch. ChatGPT doesn’t know what Claude knows. Your coding assistant doesn’t understand your music preferences. We spend hours re-explaining ourselves, re-prompting the same context, again and again.

​
The Solution

PrefID provides a universal identity layer that travels with you across every AI:
1

User authenticates via OAuth

Users grant your app permission to access their preference graph.
2

Fetch domain-specific preferences

Request only the domains you need: music, travel, coding, etc.
3

Personalize your AI

Inject preferences into your prompts for context-aware responses.

​
Available Domains

PrefID organizes preferences into domain-specific graphs:
DomainDescription
music_preferencesFavorite artists, genres, streaming habits
food_profileDietary restrictions, cuisines, allergies
travel_profileAirlines, hotels, travel style preferences
coding_profileLanguages, frameworks, editor preferences
finance_profileInvestment style, risk tolerance
general_profileName, communication style, interests

​
Quick Example

curl -X GET "https://api.prefid.dev/v1/preferences/music_preferences" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN"
Response
{
  "domain": "music_preferences",
  "preferences": {
    "favorite_artists": ["AR Rahman", "Coldplay"],
    "genres": ["Indian Classical", "Electronic"],
    "streaming_service": "Spotify"
  },
  "confidence": 0.92,
  "last_updated": "2024-12-19T10:30:00Z"
}

​
Why PrefID?

User Ownership

Your data belongs to you. Full control over what’s shared.

Transparency

See exactly what’s stored. No black boxes.

Zero Friction

AI understands you instantly. No onboarding quizzes.