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Parker Rex DailyMay 31, 2025

What Would T3 Stack Look Like But for Python + Next?

What would T3 Stack look like for Python + Next? Build your own template with AI SDLC prompts and learn by doing in software development.

Show Notes

Today Parker talks through building your own AI-enabled template, why a DIY stack beats chasing a ready-made one, and how a Python + Next-inspired approach could mirror the T3 vibe without sacrificing practicality.

Build-your-own-template philosophy

  • Don’t buy a template. Build your own so you learn faster and it fits your needs.
  • Inspiration is fine, but you gain the real benefits by doing the work in your own codebase.

AI SDLC: the updated prompt flow

  • Updated AI SDLC flow adds clarity and context. It’s a sequential, manual prompt chain that you treat like a real product team would.
  • Key prompts and flow elements (8 of 14 covered):
    • Start with idea and solution; require three solutions
    • PRD + architecture
    • System patterns, tasks, and a new Task Plus prompt
    • GitHub-style instructions, dependency clarity
    • Atomic implementation details and self-contained documentation
  • Context is king. Augment-like context engines help by injecting codebase context into prompts.

Business prompts and opportunities

  • OpenAI paper reference: lessons from frontier companies and how to surface concrete opportunities using AI workflows, dev tooling, product management, teaching, and community building.
  • Ideas include a plug-and-play evaluation harness and “AI inside product studio” to embed AI into products.

Augster, JSON prompts, and prompt storage

  • Augster: a promising prompt project with ongoing updates (XML-based prompts are being examined).
  • JSON prompts and the challenge of saving prompts reliably; multiple formats and tools exist.
  • Caution on overkill: Prompt Methus (prompt engineering IDE) can be too heavy; aim for practical, lightweight storage and reuse.

Auggie GA and remote agents

  • Auggie GA is coming; Parker plans a workflow to map job descriptions and teams to agents.
  • The goal: orchestrate agent-driven inquiry and automation for real projects.

Architecture and stack: pragmatic, composable design

  • Architecture sketch: CI/CD pipeline, Debian VPS, Docker Compose, container registry (GCR), Nginx, and a server/API layer.
  • Front-end: Next.js app (app router) with selective FastAPI usage for non-user-facing services (e.g., payments, Google integrations, AI embeddings).
  • Discord bots are integrated via the back end; observability tooling (Medi) feeds back into Discord.
  • Core idea: build a composable stack that agents already know well—Next.js, FastAPI, and Supabase.

The T3-inspired path: F3N stack

  • The concept: a Python-centric take on the T3 stack with strong type safety across Python and TypeScript.
  • Proposed stack skeleton (F3N):
    • FastAPI + OpenAPI-generated types
    • Python side for models and business logic (Pydantic)
    • TypeScript + OpenAPI-generated types on the TS side
    • Supabase + SQLAlchemy (instead of Prisma/Drizzle)
  • API layer type safety: generate and share types between Python and TS; reduce drift.
  • Practical flow:
    • Define models in Python
    • Generate TS types from OpenAPI schemas
    • Build a type-safe API client (TRPC-like feel) for the frontend
  • Example focus: a mutation to update a user profile biography, with field-level control and type-safe updates.

Practical next steps to build your own template

  • Start with a stack you like (T3-like patterns) and map them to Python + TS.
  • Use a design where the API surface is type-safe across both languages.
  • Build a small PoC (e.g., a profile update flow) to test the typing and client wiring.
  • Keep the template composable: swap in agents, dashboards, or AI services as needed.

Quick takeaways

  • Learn by building your own template; avoid locking yourself to someone else’s workflow.
  • Use a T3-inspired, Python-friendly stack to get type-safe cross-language APIs.
  • Focus on context, composability, and practical prompts that actually drive code and decisions.
  • Create T3 App - The T3 Stack for full-stack typesafe Next.js apps
  • Supabase - Open-source Postgres database platform
  • Pydantic - Python data validation library
  • FastAPI - Modern Python web framework with OpenAPI support
  • Augment Code - AI coding assistant with codebase context

If you found value in mapping ideas to a concrete, composable template, drop a like, join the Discord, and subscribe for the next update.