A freshly set up Raspberry Pi 5 is wide open: password auth enabled, no firewall, 172 pending updates. We harden it with SSH key-only auth, UFW, fail2ban, and automatic updates, disable IPv6, and verify it all with real reboots — including the trap where IPv6 comes back after a reboot.
Set up a Raspberry Pi 5 with no monitor or micro HDMI cable, using only a Windows PC. We use the Raspberry Pi Imager CLI and firstrun.sh to preconfigure Wi-Fi and SSH, with the full procedure and measured timings — about 3 minutes from SD card insertion to an SSH connection.
Hello! The first wall you hit when building a LINE Bot is not the code — it is the webhook. LINE's Messaging API delivers messages that users send to your bot as HTTPS POST requests from LINE's servers to your server. For this receiving endpoint (the Webhook
Add a chat interface to the local LLM on your home PC (Ollama + gemma4) with Open WebUI, expose it safely through a tunnel, and use it from your phone while out — a fully measured, step-by-step guide. No Docker, no WSL, and no port forwarding required.
A step-by-step guide, with real connection screenshots, to making your own MCP server usable from web-based ChatGPT and Claude. We give a localhost server a public URL and OAuth authentication, letting browser AI query a sales database in Japanese without changing a single line of code.
An honest comparison from the developers of WireCanal, a Japan-based service built on the same reverse tunnel approach as ngrok. The differences come down to three: pricing philosophy, where operations run, and where permissions live when connecting to AI.
A hands-on guide to building an MCP server, with working code from start to finish. Using Python and FastMCP, we wrap a SQLite sales database as MCP tools so an AI can take a plain-language question, write the SQL itself, and return aggregated results.
GPU
Hello! In the previous article, "TensorRT 10 × Blackwell Migration Guide (Part 1): Inference Assets Won't Run on RTX 50 — The Basics and the First Walls," we covered why existing inference assets stop working in the move to the Blackwell generation, and how to get a minimal
LLM
Hello! On July 24, 2026, Anthropic released Claude Opus 5. That is a generational change just two months after Opus 4.8 (released May 28). The pace here keeps accelerating. Now, this blog has followed the Opus line through the Claude Opus 4.7 Complete Guide、Claude Opus 4.8
GPU
Hello! You get a new GPU, excitedly move your existing inference stack over, and everything that ran fine yesterday now stops with errors across the board — sound familiar? In migrations to the NVIDIA RTX 50 series and NVIDIA RTX PRO series (the Blackwell generation), this happens with rather high probability.
LLM
Hello! On July 16, 2026, Moonshot AI of Beijing, China announced its new flagship model Kimi K3 and began offering it via its API and web services. The sheer scale of 2.8 trillion total parameters, a 1-million-token context, and the declaration that "it will become the largest open-weight
PII-FI
Hello! This is the Qualiteg Product Development Team! Today we would like to discuss the de-identification of PII (Personally Identifiable Information). To date, we have published technical explainers on personal-information detection and AI security, including high-accuracy PII detection, staged PII masking when using LLMs、test design for PII detection, and
LLM
Introduction This report is a comprehensive analysis of the performance of Japanese-capable LLMs, based on benchmark data from the Nejumi Leaderboard 4 (2026/7/10 edition). Last time, we published an analysis report on the 2026/3/6 edition; now, roughly four months on, this edition too has proved turbulent,
ClaudeCode
Hello! Claude Fable 5, which arrived in June 2026, has had an eventful first month: a suspension under export controls right after release, a global re-rollout, and then its departure from the subscription allowance. This blog has followed the situation at each turn. For the overall picture, see Finally Generally
LLM Security
Hello! In the previous article, we walked through the mechanics and limits of HTTPS interception as the technical foundation of data-loss prevention in the AI era. From decrypting SSL/TLS traffic with a proxy server and operating an intermediate CA certificate to the technical constraint of certificate pinning, we laid
ClaudeCode
Hello! This is the Qualiteg Product Development Team. When you use Claude Code, the raw tool-call XML (<invoke> or <parameter>) sometimes appears verbatim on screen, or the assistant reports "done" even though no command actually ran and no PR was actually created — and things