Practical AI execution notes — from experiments to productionhttps://minbook.dev/enhttps://minbook.dev/en/blog/multi-engine-architecture/https://minbook.dev/en/blog/multi-engine-architecture/Why WICHI chose to query multiple AI search engines simultaneously, and how cross-engine response variance became the core analytical signal for measuring brand visibility.Thu, 16 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/monitoring-before-launch/https://minbook.dev/en/blog/monitoring-before-launch/How WICHI discovered errors through user reports averaging 15 hours after occurrence. Setting up Sentry and Betterstack for minimum monitoring at zero cost, and why monitoring should come before features.Wed, 15 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/plg-mmu-share-design/https://minbook.dev/en/blog/plg-mmu-share-design/In Product-Led Growth, why the share feature must be built before anything else. The rationale behind plain text cards, the gated progression system, and the principle of 'if the numbers don't work, don't move to the next stage.'Mon, 13 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/paper-review-geo-evaluation-risks/https://minbook.dev/en/blog/paper-review-geo-evaluation-risks/Review of SAGEO Arena (unified evaluation framework) and CORE (ranking manipulation research) — GEO's measurement methodology and adversarial vulnerabilities.Sun, 12 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/feature-flag-false-pass/https://minbook.dev/en/blog/feature-flag-false-pass/Stripe isn't even used, but billing items fail. How MMU's checklist false-fail problem was solved with a condition marker system: 17 feature flags, 48 regression tests, and a score accuracy improvement from 58% to 85%.Sat, 11 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/anthropic-96h-3-layer/https://minbook.dev/en/blog/anthropic-96h-3-layer/Three Anthropic announcements between April 4 and April 8, 2026 — the third-party harness cutoff, Claude Mythos Preview, and Claude Managed Agents — analyzed through a three-layer AI stack frame.Fri, 10 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/paper-review-geo-optimization/https://minbook.dev/en/blog/paper-review-geo-optimization/Comparative review of AutoGEO (quality-preserving optimization) and E-GEO (e-commerce benchmark) — two divergent approaches to GEO engineering.Thu, 09 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/paper-review-geo-foundation/https://minbook.dev/en/blog/paper-review-geo-foundation/Academic review of the KDD 2024 GEO paper and Chen et al. 2025 — GEO-Bench, PAWC metric, and earned media preference patterns in AI search.Wed, 08 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/solo-builder-oss-monetization/https://minbook.dev/en/blog/solo-builder-oss-monetization/Synthesizing the OSS monetization strategies of 8 companies analyzed across G4a-G5, reframed for the solo builder. A 5-stage execution framework for generating revenue from open source without enterprise sales or managed infrastructure.Tue, 07 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/geo-opportunities-wichi-choice/https://minbook.dev/en/blog/geo-opportunities-wichi-choice/A comprehensive analysis of six business opportunities in the GEO market — SaaS, agency, education, data infrastructure, vertical specialization, and GEO+PR — and the strategic reasoning behind WICHI's decision to pursue SaaS targeting the Asian market.Sun, 05 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-infrastructure-monetization/https://minbook.dev/en/blog/ai-infrastructure-monetization/Hugging Face, Qdrant, and Weaviate open-source their core infrastructure — model hubs and vector databases anyone can self-host. How they generate revenue from managed cloud services, and what patterns solo builders can borrow.Sat, 04 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/big-players-entering-geo/https://minbook.dev/en/blog/big-players-entering-geo/A detailed analysis of how major marketing and SEO incumbents are entering the GEO market, covering their products, pricing, strategies, and the structural implications for the ecosystem.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/agent-system-design-canvas/https://minbook.dev/en/blog/agent-system-design-canvas/A 6-layer design framework and 12 core patterns for agent systems, extracted from 512,000 lines of leaked TypeScript source.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/claude-code-anatomy-architecture/https://minbook.dev/en/blog/claude-code-anatomy-architecture/512,000 lines of TypeScript, 1,884 files. The anatomy of a production agent system: 4-phase execution, 7 modes, and the 11-step agent loop.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/claude-code-anatomy-hidden-features/https://minbook.dev/en/blog/claude-code-anatomy-hidden-features/8 hidden features found in Claude Code's source. Autonomous agents, memory consolidation, and multi-agent orchestration designed but not shipped.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/claude-code-anatomy-my-memory-system/https://minbook.dev/en/blog/claude-code-anatomy-my-memory-system/Comparing Claude Code's Auto-Dream and Memory System with an independently built 3-layer memory architecture. Where they converge, where they diverge.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/claude-code-anatomy-tools/https://minbook.dev/en/blog/claude-code-anatomy-tools/How Claude Code manages 52 tools. The 10-step execution pipeline, parallel/sequential concurrency model, and 888KB Tree-sitter AST security.Fri, 03 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-observability-monetization/https://minbook.dev/en/blog/ai-observability-monetization/Langfuse and Dify monetize at the observation and operations layer above AI frameworks. An analysis of MIT+EE models, self-hosting strategies, community expansion, and why the observability layer is structurally better for revenue than frameworks.Wed, 01 Apr 2026 00:00:00 GMThttps://minbook.dev/en/blog/ralph-loop-beyond-self-evolving/https://minbook.dev/en/blog/ralph-loop-beyond-self-evolving/From ALAS to Self-Evolving Agents to Multi-Agent Swarms. What comes after Ralph Loop, and what it means for the people building with AI.Tue, 31 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ralph-loop-implementation-guide/https://minbook.dev/en/blog/ralph-loop-implementation-guide/Technical breakdown of the Ralph Loop's internals: file-based state persistence, stop hooks, cross-model worker-reviewer architecture, and three practical examples beyond just coding.Tue, 31 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ralph-loop-why-context-rot/https://minbook.dev/en/blog/ralph-loop-why-context-rot/Tracing the lineage of autonomous agent loop architectures: from reinforcement learning and RLHF, through ReAct and Reflexion, to the Ralph Loop — and the context rot problem that made each transition necessary.Tue, 31 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-market-2027-scenarios/https://minbook.dev/en/blog/ai-market-2027-scenarios/We analyze three possible futures (Bull, Base, Bear) from the hyperscalers' $660B CapEx and present survival strategies for each scenario.Mon, 30 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-saas-grr-crisis/https://minbook.dev/en/blog/ai-saas-grr-crisis/AI-native SaaS GRR is less than half that of traditional SaaS. A structural analysis of why, and the common patterns of companies that have beaten the churn curve.Mon, 30 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/geo-agency-consulting-market/https://minbook.dev/en/blog/geo-agency-consulting-market/Key players, specializations, and service models in the GEO agency and consulting market.Mon, 30 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/korea-ai-market-diagnosis/https://minbook.dev/en/blog/korea-ai-market-diagnosis/Two months after the AI Basic Act took effect, we analyze the structural strengths and weaknesses of South Korea's AI market — identifying the areas with real competitive edge and the traps to avoid.Mon, 30 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-framework-monetization/https://minbook.dev/en/blog/ai-framework-monetization/LangChain, LlamaIndex, and CrewAI are all free. So where does the money come from? A comparison of three open-source AI framework monetization strategies, why frameworks can't charge directly, and patterns solo builders can learn from.Sun, 29 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/nvidia-tax-gpu-profit-structure/https://minbook.dev/en/blog/nvidia-tax-gpu-profit-structure/Dissecting the $24,680 profit per H100 GPU, analyzing how NVIDIA's monopoly impacts the AI ecosystem, and exploring scenarios that could break the dominance.Sun, 29 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/openclaw-before-after-ai-outlook/https://minbook.dev/en/blog/openclaw-before-after-ai-outlook/In early 2026, AI researchers said 'Computer use? They all suck.' Two months later, the tone was completely different. A cross-analysis of two videos recorded before and after OpenClaw.Sun, 29 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-market-3-layer-anatomy/https://minbook.dev/en/blog/ai-market-3-layer-anatomy/Breaking down the AI market into infrastructure, platform, and application layers. A data-driven analysis of actual market size, revenue structures, and key players in each layer.Sat, 28 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/geo-saas-landscape/https://minbook.dev/en/blog/geo-saas-landscape/A comprehensive comparison of major GEO (Generative Engine Optimization) SaaS players by funding, features, and positioning.Fri, 27 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/seo-geo-ecosystem-value-chain/https://minbook.dev/en/blog/seo-geo-ecosystem-value-chain/Comparing SEO and GEO ecosystems across six layers: infrastructure, analytics, optimization tools, agencies, education, and media.Thu, 26 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/why-open-source/https://minbook.dev/en/blog/why-open-source/Why we released the SaaS launch checklist as an MIT open-source CLI instead of a paid web dashboard. The comparison of 3 alternatives, the What/How/Auto revenue model design, and the explicit validation criteria we set.Wed, 25 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/where-534-items-came-from/https://minbook.dev/en/blog/where-534-items-came-from/How 7 bullet points from WICHI's launch delays grew into a 534-item, 15-category SaaS launch checklist. The full story of collection sources, classification criteria, category design principles, and why the number settled at 534.Tue, 24 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/code-done-rest-not/https://minbook.dev/en/blog/code-done-rest-not/We built an MVP in 3 days with AI coding tools, but launch took 3 more weeks. Here's the full list of everything we missed outside the code, and how it led to an open-source checklist project.Sat, 21 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/prototype-to-production-changes/https://minbook.dev/en/blog/prototype-to-production-changes/Ten categories of changes when transitioning a GEO SaaS from a 3-day hackathon MVP to a commercial product.Thu, 19 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/jocoding-hackathon-geo-saas/https://minbook.dev/en/blog/jocoding-hackathon-geo-saas/Timeline record of building the WICHI GEO SaaS MVP during the Jocoding Hackathon — tech stack decisions, daily progress, and submission.Tue, 17 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/ai-search-engine-comparison/https://minbook.dev/en/blog/ai-search-engine-comparison/A data-driven comparison of ChatGPT Search, Perplexity, and Google AI Overviews — examining search mechanisms, citation formats, and brand exposure patterns.Sun, 15 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/geo-definition-seo-difference/https://minbook.dev/en/blog/geo-definition-seo-difference/What is GEO (Generative Engine Optimization), and how does it structurally differ from traditional SEO? A six-dimensional comparison analysis.Sat, 14 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/llm-as-judge-pattern/https://minbook.dev/en/blog/llm-as-judge-pattern/Practical experience applying the LLM-as-Judge pattern to evaluate AI search responses: evaluation dimensions, bias mitigation, judge reliability, and where the pattern fails.Fri, 13 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/lemonsqueezy-vs-stripe-korea/https://minbook.dev/en/blog/lemonsqueezy-vs-stripe-korea/Comparing Lemon Squeezy and Stripe from the perspective of a Korean solo operator building a global SaaS product.Thu, 12 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/hackathon-rejection-saas-pivot/https://minbook.dev/en/blog/hackathon-rejection-saas-pivot/Decision-making process after Jocoding Hackathon elimination: analyzing rejection causes, evaluating options, and executing same-day pivot to independent SaaS.Wed, 11 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/lovable-to-vercel-migration/https://minbook.dev/en/blog/lovable-to-vercel-migration/How and why we migrated WICHI's frontend hosting from Lovable to Vercel in 2.5 hours, gaining Git-first workflow and production-grade deployment control.Tue, 10 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/n8n-fair-code-experiment/https://minbook.dev/en/blog/n8n-fair-code-experiment/n8n publicly shares its source code while restricting commercial resale through Fair-code licensing. How does it differ from MIT, why did n8n make this choice, and what can we learn from the license-change histories of Elastic, MongoDB, and HashiCorp? A full spectrum analysis of open source licensing strategy.Mon, 09 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/oss-license-selection-guide/https://minbook.dev/en/blog/oss-license-selection-guide/MIT, Apache 2.0, AGPL, BSL, Fair-code, SSPL: comparing what each open source license permits and restricts, then presenting a decision framework based on project scale and business model. Includes the decision process behind MMU's choice of MIT.Sun, 08 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/solo-saas-security/https://minbook.dev/en/blog/solo-saas-security/Five OWASP Top 10 vulnerabilities relevant to solo SaaS, environment variable management, dependency auditing, rate limiting, CORS, and CSP. A minimum security checklist built from items missed during WICHI's launch.Sat, 07 Mar 2026 00:00:00 GMThttps://minbook.dev/en/blog/hello-minbook/https://minbook.dev/en/blog/hello-minbook/A non-tech builder's journey starting with AI tools, documenting the reality of production beyond the 'magic' button.Wed, 04 Mar 2026 00:00:00 GMT