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DEV's Worldwide Show and Tell Challenge Presented by Mux: Pitch Your Projects! $3,000 in Prizes. ๐ŸŽฅ

Jess Lee on December 03, 2025

We are so thrilled to introduce DEV's Worldwide Show and Tell Challenge presented by Mux! Running through January 4, this challenge invites you t...
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Peter Kim Frank The DEV Team

Can't wait to see everyone's projects โญ๏ธ

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Noah Brinker The DEV Team

Excited to see what everyone creates!

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Dave Kiss

New year, new you - let this be the year you WILL tell people about the thing you're working on ๐Ÿ˜…

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Gift Trust

I have something ready for the real world developers and deployment.
It's called MODAC - Modern Day Agentic Commerce. It's a sovereign security framework designed to govern Agentic Commerce cloud atmosphere. I have the complete Algorithm backend

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Ben Halpern The DEV Team

Good luck!

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Dylan Jhaveri

Looking forward to seeing what people are hacking on over the holidays!

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Joshua Alphonse

Take a shot and show us what you got! We're eager to see how creative everyone is.

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uratmangun

what is this Video Semantic Search - Supa Search ? is this using supabase?

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Jess Lee The DEV Team

@uratmangun here's more info:

Getting Started

Make sure you've added all .env vars required before proceeding

Requirements

  • Docker desktop
  • Deno curl -fsSL https://deno.land/install.sh | sh

Install dependencies

npm install

and

deno install

Serving the application

First, start the Supabase database.

npx supabase start
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If this is your first time running this command, your container layers will download. This takes a second, so go grab some water - you're dehydrated.

Next, open a new terminal tab and serve your Supabase functions locally:

npx supabase functions serve
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Next, open a third tab and start the Inngest queue server:

npx inngest-cli@latest dev
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Finally, run the Next.js development server:

npm run dev
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Open localhost:3000 with your browser to see the result.

Seeding the database

npm run mux-backfill
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Create the video embeddings

This will run the createEmbedding function for each asset in our database

npm run videos-backfill-existing # All assets
npm run videos-backfill-missing  # Only assets with missing embeddings
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Neweraofcoding

Nice looking forward to it!

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Aloof

I won't miss this one.

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Viktar Davidovich

I'm in

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Ibrahim Pima

nice to be apart of this contest

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sharon oliva

I think challenges like this are great for motivation. Even if you do not win sharing your project with the dev community is valuable. I might just give it a shot!

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Maame Afua A. P. Fordjour

Looking forward to see what people build! Good luck to everyone.