A jam session.
Not a hackathon.
GDG Coding Jams transform standard tech meetups into vibrant, hands-on community sandboxes where developers actually build together. Two hours, a slice of pizza, Google’s AI stack — and a real prototype walking out the door.
Four beats, and you’re out with a working app.
No prep required. No prior project. Drop in to any track on any week.
Bring a laptop. No prep, no prior project. The room handles the rest.
The polished version of tonight's app, shipped live by the facilitator. This is what's possible.
Antigravity writes the code. You direct it with a one-page PRD. Fix the doc, not the code.
A working app on your laptop. A new collaborator. Bragging rights.
A jam, not a hackathon.
Think of a musical jam or an after-work pottery class. Instruments out, a creative prompt, two hours of making something tangible alongside friends. We bring that energy to software.
No sit-and-listen tech talks. No 48-hour competitive hackathon grind. Just blueprints, tech access, and collaborative space.
Developers learn Google's AI tools best when they're actively building. We remove the blank-page syndrome.
Materials, timelines, and goals provided. Organizers book a room and bring the snacks.
Collaborative problem-solving builds a deeper network than passive networking ever does.
Turnkey, by design.
A complete kit with starter code, frictionless API access, and an 8-track app curriculum. Every track ships with the same three ingredients.
See the full kit →Scaffolded folder with context/, helper prompts, and pre-flight scripts.
A step-by-step guide that gets a participant from zero to a working app in 45 minutes.
The 5 Spec Talk questions on one printable. Hang it in the room.
Two hours, five movements.
Predictable, fast-paced, engaging. We keep the talking short and the building long. Organizers act as facilitators, guiding the room through a unified creative process.
The goal in the room is always to ship the core feature in 45 minutes — the one thing that proves the concept. Push toward the polished version on your own time.
- 0:00 – 0:05Intro
Welcome, name tags, snacks within reach. The facilitator sets the tone: low pressure, high creativity, ship something messy.
- 0:05 – 0:15The Demo
Facilitator demos the polished version of tonight's project. Live or pre-recorded. The message: this is what's possible.
- 0:15 – 0:25Spec Talk
Walk the 5 questions on the projector. The output is a one-page PRD that Antigravity will turn into UI + engineering docs.
- 0:25 – 1:30Build (codelab)
Participants run the codelab. Antigravity writes the code; they direct it. Six phases inside this hour: Setup → Plan → Review → Build → API → Verify. Fix the doc, not the code.
- 1:30 – 2:00Sharing
Three volunteer screen-shares. Celebrate the messy, brilliant, half-finished prototypes. Quick wrap-up. Tease the next jam.
The skill participants take home.
The apps are how the room practices. The Spec Talk is what participants take home. Two minutes of structured talking — five questions, a sharpie, and a projector — shapes the next 45 minutes of building.
Eight reps over eight tracks. The apps are the practice; the Spec Talk is the muscle. By Track 8, participants are running it solo on their own original ideas.
In Antigravity, the Spec Talk becomes the PRD — and the PRD generates the UI doc, the engineering doc, and the code. The fix-the-doc-not-the-code loop starts here.
“Demo first, theory never” — participants see something cool, then build their version. No lectures on tool calls or prompt engineering.
- 1Magical momentWho's looking at this and what feeling are we going for?
- 2Input / outputWhat does the app take in, exactly? What does it give back?
- 3PersonalityWhat's the AI's tone? Witty? Quiet? Stern? Encouraging?
- 4Signature detailWhat's the one thing that makes ours different from the person next to us?
- 5Not building todayWhat are we explicitly NOT shipping? Name it out loud.
Eight standalone apps. Pick any one.
Every track is a complete, drop-in project that ships in two hours. They don’t depend on each other. Start with whichever sounds most fun for your community.
Shared skill, not shared codebase. The Spec Talk is the connective tissue — eight reps over eight tracks.
- 01–02 Image-gen pair — same tech, different prompt patterns
- 03 The turn — from pretty things to organizing your life
- 04–07 Language-driven utility
- 08 Open canvas — graduation
- 01Glow Up — Selfie + a hairstyle → see the new you.
- 02Avatar Studio — Photo (you OR your pet) + pick a style → one stylized avatar.
- 03Year in Poetry — Tell AI your meaningful dates → a year calendar you can read like a poem.
- 04FridgeChef — Type what's in your fridge → one recipe (with food photo).
- 05Mood Jar — Type how you're feeling → a little token drops into your jar.
- 06My Corner — Name + bio + 3 things → a live URL you can text your mom.
- 07BulletProof — Paste resume + paste job → tailored bullets.
- 08Character Chat — Define one character → chat with them.
Ready to jam?
Open any track and ship a working app in the next 45 minutes. Or grab the kit and host a jam in your city.