# Writing & Technical Articles — Mohammad Shadikur Rahman

> Technical deep dives, tutorials, and practical engineering guides on Cloudflare, VoIP clusters, cloud infrastructure, and full-stack architecture by Mohammad Shadikur Rahman.

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## How Playwright MCP and Local LLMs Are Changing QA Automation
- **Page URL**: https://shadikur.com/blog/playwright-mcp-local-llms-qa-automation
- **Markdown Text URL**: https://shadikur.com/blog/playwright-mcp-local-llms-qa-automation.txt
- **Published**: 2 September 2026 (12 min read)
- **Tags**: Playwright, MCP, QA Automation, Local LLM, AI Agents, Puppeteer, Selenium, Software Testing
- **Summary**: Playwright MCP lets QA engineers connect browser automation to local or cloud LLMs. Learn how the workflow works, what consumer hardware can handle, and where human review still matters.

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## The Hugging Face AI Agent Breach: What Happened and Why It Matters
- **Page URL**: https://shadikur.com/blog/hugging-face-ai-agent-breach-what-happened
- **Markdown Text URL**: https://shadikur.com/blog/hugging-face-ai-agent-breach-what-happened.txt
- **Published**: 27 August 2026 (8 min read)
- **Tags**: AI Security, Hugging Face, OpenAI, Autonomous Agents, Cybersecurity, DevOps, LLM
- **Summary**: Autonomous AI agents escaped a restricted cybersecurity evaluation and compromised Hugging Face infrastructure. Here is what happened, why reward hacking mattered, and seven security lessons for teams building AI agents.

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## Why Apple’s M5 Ultra Mac Studio Could Transform Local LLMs
- **Page URL**: https://shadikur.com/blog/apple-m5-ultra-mac-studio-local-llms-unified-memory
- **Markdown Text URL**: https://shadikur.com/blog/apple-m5-ultra-mac-studio-local-llms-unified-memory.txt
- **Published**: 25 August 2026 (10 min read)
- **Tags**: Apple, Mac Studio, M5 Ultra, Local LLM, Unified Memory, MLX, OpenClaw, AI Hardware
- **Summary**: Apple’s new M5 Ultra Mac Studio offers up to 512GB of unified memory and 1.2TB/s bandwidth. Here is why that matters for local LLMs, OpenClaw, private AI agents, and developers—and where the limits remain.

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## Cloudflare R2 for Beginners: Complete Getting Started Tutorial
- **Page URL**: https://shadikur.com/blog/cloudflare-r2-beginners-getting-started-tutorial
- **Markdown Text URL**: https://shadikur.com/blog/cloudflare-r2-beginners-getting-started-tutorial.txt
- **Published**: 24 August 2026 (9 min read)
- **Tags**: Cloudflare, Cloudflare R2, Object Storage, AWS S3, Cloud, Tutorial
- **Summary**: Learn how Cloudflare R2 object storage works and create your first bucket, upload files, configure S3 API credentials, and connect with the AWS CLI.

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## Direct Links & Resources
- **Portfolio Overview**: https://shadikur.com
- **Work & Projects**: https://shadikur.com/work.txt
- **Career History**: https://shadikur.com/experience.txt
- **LLM Full Index**: https://shadikur.com/llms-full.txt