Yuuki Yamashita

I'm an AWS Community Builder (AI Engineering) based in Japan.

Japan Joined on Jun 2, 2026

Yuuki Yamashita

Jul 5

Port Numbers, In Order: Why the List Has Gaps, and the Best Stories Behind the Numbers

#networking #computerscience #webdev #beginners

17 min read

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Yuuki Yamashita

Jul 4

I Built an AI Agent That Catches AI Hype-Mongers on X — with Strands Agents + Bedrock AgentCore

#ai #bedrock #agentcore #vercel

4 min read

Yuuki Yamashita

Jul 3

The Three Zeros: Why AWS Keeps Deleting the Excuse for Permanent Access

#aws #security #cloud #devops

6 min read

Yuuki Yamashita

Jul 3

I Let an AI Agent Design, Deploy, and Fix Its Own AWS Stack with CloudFormation Express Mode

#ai #cloudfomation #aws #serverless

5 min read

Yuuki Yamashita

Jul 2

Never oversell, anywhere on Earth — a global drop platform on Amazon Aurora DSQL

#aws #database #serverless #webdev

5 min read

Yuuki Yamashita

Jul 2

Is a "Zero IAM Users" AWS Setup Actually Possible?

#aws #security #iam #cloud

3 min read

Yuuki Yamashita

Jul 2

aws login: What AWS CLI's New Console-Credential Command Can (and Can't) Do

#aws #cli #security #devops

7 min read

Yuuki Yamashita

Jun 30

Attacking AWS DevOps Agent: Designing Prompt Injection Attacks on the Ops Layer

#aws #ai #security #devops

5 min read

Yuuki Yamashita

Jun 28

Let AI prep your Singapore trip — streaming Bedrock's Extended Thinking over SSE on top of Tavily Search

#tavily #bedrock #nextjs #claude

5 min read

Yuuki Yamashita

Jun 28

The Tale of CloudFront — The World's Greatest Delivery Boy

#cloudfront #awswaf #cdn

4 min read

Yuuki Yamashita

Jun 28

Can You Really Run a VPC with Zero Public Subnets Using Regional NAT Gateway? A Hands-On Verification

10 min read

Yuuki Yamashita

Jun 27

I Built a CFP Copilot with Amazon Quick - From Prompt to Published App in Under 1 Hour

#amazonquick #cfp #i18n #ai

3 min read

Yuuki Yamashita

Jun 27

AI Minecraft AWS — Building an autonomous Minecraft agent with Strands Agents + AgentCore Runtime + Bedrock

6 min read

Yuuki Yamashita

Jun 23

The day I gave an AI a wallet — building an approval-gated shopping agent with Sonnet 4.6, AgentCore Payments, Rakuten and Stripe

#bedrock #agentcorepayments #nextjs #ai

5 min read

Yuuki Yamashita

Jun 22

Porting Apex Voice to Windows broke at every single layer (faster-whisper + pystray + pywin32)

#aws #bedrock #python #windows

5 min read

Yuuki Yamashita

Jun 21

Apex Voice v2 — Killing Hallucinations, Cutting Latency, and Landing on Caps Lock

#aws #bedrock #bedrockagentcore #strandsagents

7 min read

Yuuki Yamashita

Jun 19

Building a chat-based Marp slide generator with Next.js, Amazon Bedrock, and Lambda

#aws #bedrock #nextjs #marp

6 min read

Yuuki Yamashita

Jun 19

Voice Typing Anywhere on macOS — I Built Apex Voice with mlx-whisper, Amazon Bedrock, and Strands Agents

#aws #bedrock #macos #standsagents

4 min read

Yuuki Yamashita

Jun 11

I gave my AI agent a boss: a human-approval gate in Slack, over MCP

#ai #slack #mcp #aws

4 min read

Yuuki Yamashita

Jun 8

I built a web app that overlays Niconico-style scrolling comments onto your slides (PowerPoint-ready, keyless OIDC)

#nextjs #aws #lambda #webdev

3 min read

Yuuki Yamashita

Jun 6

Building Fridge AI Health: An AI-Native Full-Stack App with Vercel and Amazon Aurora

#showdev #ai #aws #webdev

5 min read

Yuuki Yamashita

Jun 6

Detect AI writing, then rewrite it human — Bedrock + Strands Agents + AgentCore Gateway

#aws #bedrock #ai #nextjs

5 min read

Yuuki Yamashita

Jun 5

Never oversell, anywhere on Earth — building a global drop platform on Amazon Aurora DSQL

#showdev #aws #database #distributedsystems

5 min read

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

Yuuki Yamashita

Jun 3

From static slides to a postable video: finishing my LINE-style chat generator with GitHub Copilot

#devchallenge #githubchallenge

3 min read

Yuuki Yamashita

Jun 2

Generating animated LINE-style chat slides with python-pptx + raw XML (and shipping it on Vercel)

#showdev #automation #productivity #python

8 min read

Yuuki Yamashita

Jun 2

Building Diagram AI: From Natural Language (and Screenshots) to AWS Architecture Diagrams

#showdev #ai #architecture #aws

6 min read

DEV Community

Yuuki Yamashita

Badges

GitHub Copilot "Finish-Up-A-Thon" Challenge Completion

Writing Debut

Port Numbers, In Order: Why the List Has Gaps, and the Best Stories Behind the Numbers

Want to connect with Yuuki Yamashita?

I Built an AI Agent That Catches AI Hype-Mongers on X — with Strands Agents + Bedrock AgentCore

The Three Zeros: Why AWS Keeps Deleting the Excuse for Permanent Access

I Let an AI Agent Design, Deploy, and Fix Its Own AWS Stack with CloudFormation Express Mode

Never oversell, anywhere on Earth — a global drop platform on Amazon Aurora DSQL

Is a "Zero IAM Users" AWS Setup Actually Possible?

aws login: What AWS CLI's New Console-Credential Command Can (and Can't) Do

Attacking AWS DevOps Agent: Designing Prompt Injection Attacks on the Ops Layer

Let AI prep your Singapore trip — streaming Bedrock's Extended Thinking over SSE on top of Tavily Search

The Tale of CloudFront — The World's Greatest Delivery Boy

Can You Really Run a VPC with Zero Public Subnets Using Regional NAT Gateway? A Hands-On Verification

I Built a CFP Copilot with Amazon Quick - From Prompt to Published App in Under 1 Hour

AI Minecraft AWS — Building an autonomous Minecraft agent with Strands Agents + AgentCore Runtime + Bedrock

The day I gave an AI a wallet — building an approval-gated shopping agent with Sonnet 4.6, AgentCore Payments, Rakuten and Stripe

Porting Apex Voice to Windows broke at every single layer (faster-whisper + pystray + pywin32)

Apex Voice v2 — Killing Hallucinations, Cutting Latency, and Landing on Caps Lock

Building a chat-based Marp slide generator with Next.js, Amazon Bedrock, and Lambda

Voice Typing Anywhere on macOS — I Built Apex Voice with mlx-whisper, Amazon Bedrock, and Strands Agents

I gave my AI agent a boss: a human-approval gate in Slack, over MCP

I built a web app that overlays Niconico-style scrolling comments onto your slides (PowerPoint-ready, keyless OIDC)

Building Fridge AI Health: An AI-Native Full-Stack App with Vercel and Amazon Aurora

Detect AI writing, then rewrite it human — Bedrock + Strands Agents + AgentCore Gateway

Never oversell, anywhere on Earth — building a global drop platform on Amazon Aurora DSQL

From static slides to a postable video: finishing my LINE-style chat generator with GitHub Copilot

Generating animated LINE-style chat slides with python-pptx + raw XML (and shipping it on Vercel)

Building Diagram AI: From Natural Language (and Screenshots) to AWS Architecture Diagrams