Awesome Codex App Template

Production monorepo starter for AI apps across web, mobile, MCP, and APIs
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/projects/codexapptemplate

Awesome Codex App Template

08

A production-grade starter monorepo for building Next.js, iOS, Android, macOS, AI applications, terminal IDE tools, shared APIs, and MCP/FastMCP services with quality guardrails and setup automation.

Project context05

Problem

AI app teams often start from fragmented repos: one web app, one mobile app, separate APIs, ad hoc MCP tools, and no shared quality gates.

Solution

Awesome Codex App Template provides a production-shaped monorepo starter with Next.js, Expo, FastAPI, FastMCP/MCP, Supabase, shared packages, setup automation, and validation commands.

Challenges

A useful starter has to be opinionated without being rigid: it must support web, native, backend, agent tools, data, and quality workflows without hiding the seams.

Innovation

The template treats agent-app scaffolding as a full product system. MCP services, native clients, web apps, APIs, storage, and quality gates are designed together from the first commit.

Domain expertise

This demonstrates Stefan's ability to convert repeated AI product lessons into reusable engineering infrastructure for cross-platform teams.

Case study evidence11

Outcomes

  • Gives builders a faster starting point for serious AI products.
  • Keeps web, mobile, backend, MCP, and data layers in one coordinated architecture.
  • Bakes quality gates and setup discipline into the starter rather than adding them after the fact.

Architecture decisions

  • Turborepo workspace shares packages and contracts across app lanes.
  • Next.js, Expo, FastAPI, and FastMCP cover the main product/runtime surfaces.
  • Supabase and quality commands provide persistence and delivery discipline.

Domain expertise signals

AI app starterMonorepoMCPCross-platformQuality gates
Technical deep dive09

Awesome Codex App Template is a reusable architecture artifact. It packages the recurring shape of modern AI products: web, native, backend, MCP tools, shared packages, data, setup, and quality gates.

Cross-platform baseline

AI products increasingly span web, iOS, Android, desktop, APIs, and terminal tools. Starting from a monorepo keeps those surfaces from drifting immediately.

Agent surfaces included

AI SDK and FastMCP lanes make chat and tool protocols part of the starter instead of bolt-ons added after the product has already split into separate repos.

Shared contracts

Shared packages prevent schemas, UI primitives, auth assumptions, and API clients from diverging across apps. That is especially important when agents call the same backend tools.

Quality by default

Setup automation, lint, typecheck, tests, and deployment scripts create a higher baseline for new work. The template is a way to encode engineering taste into the starting point.

What this proves

  • Turborepo-style shared workspace
  • Next.js, Expo, FastAPI, and FastMCP lanes
  • Supabase-backed product state
  • Quality gates and setup automation built into the starter
4app lanes
2agent lanes
1shared monorepo
Nquality gates
Ndeploy targets
100%starter discipline
Technology stack06
TypeScript

TypeScript

Coordinates shared contracts across apps, packages, and agent surfaces.

Next.js

Next.js

Provides the default web app lane for full-stack AI products.

Expo

Expo

Adds iOS and Android without splitting the product into unrelated repos.

FastAPI

FastAPI

Gives Python-heavy AI services a typed HTTP backend lane.

MCP

MCP / FastMCP

Makes tool surfaces available to agent clients and IDEs.

Supabase

Supabase

Covers auth, Postgres, storage, and realtime product state.

Tools implemented08

Turborepo workspace

Keeps product apps and shared packages in one maintainable structure.

Next.js starter

Provides a modern web app surface for AI products.

Expo starter

Adds mobile lanes for iOS and Android.

FastAPI service

Supports Python AI and backend workflows.

FastMCP service

Packages tools for MCP-compatible agents.

Supabase integration

Gives apps auth, Postgres, and storage from the start.

Quality gates

Pins lint, typecheck, tests, and consistency checks into the starter.

Setup wizard

Reduces bootstrapping friction for new agent products.

Stefan Creadore · @Eldergenixproduction agent systems mapped end to end