Personal Daily Brief
An AI-powered daily briefing web app that pulls your calendar, email, Slack, tasks, and weather into one personalized summary — so you start your day informed without digging through five apps.
In Active DevelopmentThe Problem
Every morning, knowledge workers open five different apps just to figure out what their day looks like: Gmail for email, Google Calendar for meetings, Slack for team updates, a todo list somewhere, and a weather app on their phone. That context-gathering ritual eats 15–30 minutes a day and leaves most people still feeling behind.
Existing "briefing" tools are usually just calendar apps with extra steps. Nothing pulls everything together intelligently and tells you what actually matters today.
The Solution
Personal Daily Brief pulls from all your sources — email, calendar, Slack, tasks, weather — and uses an AI model (Anthropic Claude) to produce a single, personalized briefing. One screen, every morning, telling you what's on your plate, what changed overnight, and what needs attention first.
Users sign in, connect their accounts via OAuth, set preferences, and get a freshly-generated brief each day. Free for basic use, paid tiers for advanced features and longer history.
Key Features
Multi-Source Aggregation
Pulls calendar events, unread emails, Slack mentions, weather, and your task list into one unified timeline for the day ahead.
AI-Generated Briefings
Anthropic Claude analyzes everything and produces a short, plain-English briefing that surfaces what matters and suppresses noise.
Secure OAuth Integrations
Google, Microsoft, and Slack authentication with refresh token handling. Tokens are encrypted at rest and scoped to the minimum needed.
Task Management
Lightweight task tracking with priorities and due dates, integrated into the daily brief so you always see what's coming up next.
Localized Weather
Per-user timezone and location support with live OpenWeather data — actually useful, not just a decorative widget.
Tiered Subscriptions
Free tier for individuals, paid tiers for extended history, more integrations, and advanced AI features — billed via Stripe.
Architecture & Technology
Next.js 15
App Router with React 19 Server Components
TypeScript
Fully typed end-to-end for safer refactors
Prisma + Supabase
PostgreSQL ORM with Supabase Auth and SSR
Anthropic Claude
Daily brief generation via Claude API
Tailwind 4 + Radix UI
Accessible components with Framer Motion
AWS Amplify + Docker
Containerized deployment with GitHub Actions CI/CD
The Build Journey
A phased build that keeps the product shippable at every stage.
Foundation & Core App
Next.js 15 + Supabase scaffold, auth flow, user profiles with timezone and location support, task CRUD with priority and due dates, OpenWeather integration, and the core dashboard layout.
OAuth Integrations
Connecting Google Calendar/Gmail, Microsoft Outlook, and Slack via OAuth 2.0. Secure token storage with refresh handling, per-user integration settings, and data-fetching pipelines.
AI Briefing Generation
Anthropic Claude integration to synthesize the day's data into a personalized morning brief. Prompt engineering, structured output parsing, and nightly scheduled generation per user.
Subscription Billing
Stripe Checkout with tiered plans, Stripe Customer Portal for self-service, webhook-based subscription sync, and plan-gated features. Profile model already has plan and stripeCustomerId fields wired in.
Key Technical Challenges
The hard problems behind a product that has to pull from five providers and still feel instant.
Multi-Provider OAuth Token Management
Problem: Each provider (Google, Microsoft, Slack) has different OAuth flows, token lifetimes, refresh semantics, and failure modes. Tokens expire at different times; refresh tokens occasionally get revoked; rate limits differ.
Solution: A single Integration model with a composite unique key on (userId, provider), paired with a provider-agnostic token-refresh service. Each provider has a small adapter; the orchestration layer only sees "get fresh token" or "integration disconnected." Refresh failures trigger a re-auth prompt without crashing the brief generation.
Shipping Value Before the AI is Built
Problem: An AI briefing app without working AI is a demo. But building the AI first without data pipelines is equally useless. How do we keep the product shippable and testable at every phase?
Solution: A phased build where each phase ships a usable product on its own. Phase 1 is a clean task + weather dashboard. Phase 2 layers in real data from your accounts. Phase 3 adds the AI synthesis on top of a data layer that already works. This avoids the "nothing works until everything works" trap that kills most multi-integration products.
Privacy-Preserving AI Summaries
Problem: Sending a user's raw emails, calendar events, and Slack messages to a third-party LLM is a non-starter for trust. But that data is exactly what makes the brief useful.
Solution: Scoped, minimized payloads — only the fields Claude actually needs to summarize (subject lines, times, sender names, not full message bodies unless explicitly opted-in). Server-side prompt construction ensures users never accidentally expose more than they meant to. Future roadmap includes on-device / self-hosted LLM options for privacy-sensitive users.
Design Decisions
A few of the "why this instead of that" choices behind the build.
Next.js App Router over Pages Router
Server Components cut the JavaScript bundle dramatically, which matters on a dashboard that fetches from five different APIs. Streaming responses mean the brief can start rendering while slower integrations are still loading.
Supabase over Custom Auth
Supabase Auth handles email/password, OAuth callbacks, session management, and row-level security out of the box. It saves roughly a month of build time on a problem that isn't our differentiation.
Prisma on Top of Supabase Postgres
Supabase gives us Postgres + Auth; Prisma gives us type-safe queries and clean migrations. Using both means we get Supabase's hosted infrastructure and Prisma's developer experience — without fighting either one.
Anthropic Claude over OpenAI
Claude's longer context window makes it a better fit for synthesizing a full day of inputs, and its output is consistently more readable for short-form natural-language summaries. We'd revisit this if we needed tool-use-heavy agent behavior instead of summarization.
Security & Reliability
Supabase Auth + SSR
Server-rendered auth checks with secure httpOnly session cookies
Cascade Delete on Integrations
Removing a user cleanly wipes all OAuth tokens — no orphaned credentials
Zod Input Validation
Every API route validates shapes before touching the database
Middleware-Based Auth
Next.js middleware enforces authentication on protected routes
Minimal Scopes
Each OAuth integration requests only the permissions the feature actually needs
CI/CD + Docker
GitHub Actions tests and builds every change; Dockerfile for reproducible deploys
Related Services
This build draws on several of the services we offer.
Follow the Build
Personal Daily Brief is being developed in the open. Track progress on GitHub.
View on GitHub →Want to Build Something Like This?
Multi-integration dashboards, AI-powered apps, SaaS products with subscription billing — this is exactly the kind of work we do. Let's talk.
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