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DEV Challenges

This is the official tag for submissions and announcements related to DEV Challenges.

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I Built a Hermes Agent to Tell Me Which Hackathons to Enter. It Told Me to Enter This One.

Hermes Agent Challenge Submission: Build With Hermes Agent

I Built a Hermes Agent to Tell Me Which Hackathons to Enter. It Told Me to Enter This One.

10
Comments 1
6 min read
Antigravity 2.0 in one day: the four shells and what each is good for

Google I/O Writing Challenge Submission

Antigravity 2.0 in one day: the four shells and what each is good for

5
Comments
6 min read
Your Hermes agent's prompt cache is 30% hit because of one timestamp. Here's how to find it.

Hermes Agent Challenge Submission: Write About Hermes Agent

Your Hermes agent's prompt cache is 30% hit because of one timestamp. Here's how to find it.

4
Comments
4 min read
I had 3,000 agent trace events in JSONL. My manager wanted them in Excel. One line.

Hermes Agent Challenge Submission: Build With Hermes Agent

I had 3,000 agent trace events in JSONL. My manager wanted them in Excel. One line.

2
Comments
2 min read
From Half‑dead Prototype to Local‑Only AI Medical Assistant: Rewiring MedClinic with GitHub Copilot

GitHub “Finish-Up-A-Thon” Challenge Submission

From Half‑dead Prototype to Local‑Only AI Medical Assistant: Rewiring MedClinic with GitHub Copilot

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Comments 2
4 min read
Multimodal Gemma 4 Visual Regression & Patch Agent

Gemma 4 Challenge: Build With Gemma 4 Submission

Multimodal Gemma 4 Visual Regression & Patch Agent

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Comments 5
6 min read
Building FarmWise: An AI Field Advisor for Subsistence Farmers Using Gemma 4

Gemma 4 Challenge: Write about Gemma 4 Submission

Building FarmWise: An AI Field Advisor for Subsistence Farmers Using Gemma 4

4
Comments
7 min read
AccessLens — A persistent on-device visual interpreter for the blind

Gemma 4 Challenge: Build With Gemma 4 Submission

AccessLens — A persistent on-device visual interpreter for the blind

7
Comments
4 min read
Context window exceeded at turn 23. Here's how I track token usage without a tokenizer.

Hermes Agent Challenge Submission: Write About Hermes Agent

Context window exceeded at turn 23. Here's how I track token usage without a tokenizer.

2
Comments
1 min read
Gemma Forge: Local AI Without the Setup Wall

Gemma 4 Challenge: Build With Gemma 4 Submission

Gemma Forge: Local AI Without the Setup Wall

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Comments 1
5 min read
How Building `shuka` Helped Me Stay Consistent

GitHub “Finish-Up-A-Thon” Challenge Submission

How Building `shuka` Helped Me Stay Consistent

3
Comments
3 min read
How Does an AI Agent Actually Buy Something? Google Just Published the Spec.

Google I/O Writing Challenge Submission

How Does an AI Agent Actually Buy Something? Google Just Published the Spec.

4
Comments
6 min read
Google Is Killing Gemini CLI on June 18. Here Is What to Do Before Then

Google I/O Writing Challenge Submission

Google Is Killing Gemini CLI on June 18. Here Is What to Do Before Then

14
Comments
5 min read
I Ran Every Gemma 4 Model on My Home Lab. E4B Crushes E2B. Here's the Data.

Gemma 4 Challenge: Write about Gemma 4 Submission

I Ran Every Gemma 4 Model on My Home Lab. E4B Crushes E2B. Here's the Data.

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Comments 1
3 min read
How I Built a Local, Multimodal Gemma 4 Visual Regression & Patch Agent: Closed-Loop Validation, Canvas Pixel Diffing, and Reproducible Benchmarks

Gemma 4 Challenge: Write about Gemma 4 Submission

How I Built a Local, Multimodal Gemma 4 Visual Regression & Patch Agent: Closed-Loop Validation, Canvas Pixel Diffing, and Reproducible Benchmarks

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Comments 8
7 min read
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