Designing the One Page You Open Every Morning — Building Living Dashboards with Cowork Artifacts and MCP
Cowork Artifacts promote a chat answer into a re-openable page that fetches live MCP data. Here is how I design pages that replace recurring questions.
Untangling Claude Code's 'Authorization Failed' Error — OAuth, MCP, and Dynamic Client Registration
Why Claude Code suddenly throws 'authorization failed' or 'incompatible auth server: does not support dynamic client registration', and what to actually do about it. A practical walkthrough of OAuth, MCP server requirements, and the real fixes that work in production.
Secret Management and Trust Boundaries for Claude Code — A Production Guide for the Agent Era
A field-tested approach to secrets in a Claude Code workflow: trust-boundary modeling, three injection patterns, leak-prevention hooks, and rotation runbooks — with working code for .env, MCP, and OS Keychain integrations.
Claude Code for Unity Game Development: Practical
Hands-on guide to using Claude Code on real Unity projects: writing CLAUDE.md for Unity, the Unity MCP server, scene-aware C# generation, PlayMode tests, and build verification.
Why Your Custom MCP Server's Logs Disappear — Writing to stderr in Claude Code
If you're building your own MCP server and your console.log lines never appear — while Claude Code silently reports the tool as unresponsive — you're probably polluting stdio. Here's how to spot it and rewrite your logs to keep the protocol intact.
Claude API × MCP: Building a Paid Consulting SaaS That Runs Without You
Build a sustainable consulting SaaS solo. Learn the complete architecture, implementation, and operations behind a ¥30,000/month revenue system using Claude API, MCP, Stripe, and CloudFlare KV. Includes real code, cost breakdowns, and hard-won lessons from scaling to enterprise.
The Claude Code Error Handbook — Auth, Billing, Stalls, Tools & MCP, Diagnosed by Symptom
A field-tested reference for 40+ Claude Code error patterns, organized by visible symptom: authentication, billing, response stalls, tool failures, MCP connectivity, and hook issues. Each entry tells you where to look and what to change.
Three Minutes with /doctor: Catching Claude Code Config Drift Before It Costs You an Hour
When Claude Code acts up, the first thing to run is /doctor. It shows merged settings, MCP server status, and permission mode at a glance.
Building a Custom Autonomous Agent Loop with Claude Code SDK — Beyond the CLI
Understand the internals of the Claude Code SDK and build custom autonomous agent loops in Python and TypeScript. Covers tool permissions, error recovery, and streaming, plus the cost instrumentation and monthly model audits I rely on in real operation.
Four Places My MCP Agent Broke — Measuring Aggregation Tools, Fake Parallelism, and Input Validation
The implementation holes I hit while running MCP servers and agent workflows as a solo developer, with numbers measured on my own machine: boundary values in aggregation tools, parallelism that quietly runs serially, brittle JSON parsing, and the limits of blocklist-style input validation.
Implementing Design Systems as Claude Skills: Learning from kintone's AI-Ready Documentation
Learn how to transform your design system into AI-readable Claude Agent Skills, using Cybozu's kintone Design System as a reference. This guide covers the differences between MCP and Skills, SKILL.md design principles, and documentation optimization for AI integration.
Managing Your Obsidian Knowledge Base with Claude MCP (2026)
Connecting Obsidian to Claude MCP so an AI can search, write, and reorganize your vault — setup through everyday workflows with Claude Code.