OpenAI Codex Hackathon 2026

Your workspace,
one overlay away

Drop files, links, and questions into one place. Stash keeps your project context indexed and triggers Codex-powered actions without ever leaving your flow.

Scroll to explore

Features

/ What Stash does for you

01

Drag & Drop Overlay

macOS Native Experience

Drop
02

Context Indexing

Background Auto-Indexing

Index
03

Codex-Powered Actions

AI Agent Execution

Act

How It Works

/ From drop to done in seconds

01

Drop It In

Drag files, links, or type questions directly into the floating Stash overlay on your desktop

02

Auto-Index

Stash watches your project folders and indexes everything in the background using embeddings and vector search

03

Ask or Act

Chat with your project context or trigger Codex-powered actions like generating docs, organizing assets, or writing code

04

See Results

Outputs appear directly in your project folder. Track every run with full conversation history and replay

Built for
the Codex
era

Stash combines a native macOS SwiftUI overlay with a Python backend service, local-first SQLite storage, and real-time SSE streaming.

Every interaction flows through a GPT planner that emits tagged commands executed by Codex in isolated worktrees.

4
Components
SwiftUI + FastAPI + SQLite + Codex
SSE
Real-time
Live event streaming
Local
First
Your data stays on your machine

Get
Started

/ Open source, built in public

Event

OpenAI Codex Hackathon

February 5, 2026 at OpenAI HQ, San Francisco

Quick Start

1

Clone the repo and install dependencies

2

Start the Python backend service

3

Build and run the macOS SwiftUI app

4

Drop files into Stash and start building

Tech Stack

SwiftUIPythonFastAPISQLiteOpenAI CodexSSE