# sakimyto.com > Sourced knowledge for work, and experiments built with AI. sakimyto is an entrepreneur and engineer with 3 exits. The lab records which work AI took over in each experiment, what a person still decides, and the figures so far. ## About - Name: sakimyto - Role: Entrepreneur & engineer launching experiments with AI-driven development - Tagline: Sourced knowledge for work, and experiments built with AI - Affiliation: curumi buddy Inc. (https://curumi.co.jp) - Location: Tokyo, Japan - Experience: 8+ years building products end-to-end - Startup exits: 3 - Interactive demos built: 197+ - Technical blog posts: 59+ - Stack: React 19, TypeScript, TanStack Start, Canvas API, Web Audio API, Cloudflare Pages - About page: https://sakimyto.com/en/about - Focus: AI-driven development, handing business work to AI, launching experimental products, interactive web experiences ## Experiments Products and projects sakimyto launched with AI-driven development. Each has a record page (purpose, hypothesis, status, learnings). - [Lab index](https://sakimyto.com/en/lab) - [Tokyo outing finder](https://sakimyto.com/lab/odekake) (Live, Japanese only): Tokyo outings for a date, family, or rainy day - [Classics Lab](https://sakimyto.com/en/lab/classical-wisdom) (Live): Sun Tzu and Confucius at work - [Security Lab](https://sakimyto.com/en/lab/security-knowledge) (Live): Real breaches as a checklist - [CVR Lab](https://sakimyto.com/en/lab/cvr-lab) (Live): Sign-up ideas as live demos - [Manga Lab](https://sakimyto.com/en/lab/manga-encounter) (Live): Lesser-known manga, each with why it was picked - [Painting History Lab](https://sakimyto.com/en/lab/painting-history) (Live): Western painting by artist or era, with sources — https://sakimyto.com/painting-history Own llms.txt: https://sakimyto.com/painting-history/llms.txt AI handles: Opens the source pages, extracts facts and a short quotation, and assigns a confidence grade. Also builds the site and checks it for broken links, layout problems, CSP errors and mobile display. Kept by a person: Sets the rule to publish primary information only and to add nothing that cannot be confirmed, and decides the site name and whether to publish. Publishing waits until the screens have been seen. - [Picks](https://sakimyto.com/en/lab/picks) (Live): Torn between tools? See scores on fixed criteria AI handles: Scores each product on fixed axes and writes the comparison article. Kept by a person: The axes, the scoring method, and the list of products allowed in, all set beforehand. Articles with products outside the list are not published. - [Rootpublish](https://sakimyto.com/en/lab/rootpublish) (Live): Fact-check AI on your pricing and terms — https://rootpublish.com - [Growth1Tag](https://sakimyto.com/en/lab/growth1tag) (Live): Check site speed and form drop-off with one tag — https://growth1tag.com - [Fully automated YouTube channel and curation media](https://sakimyto.com/en/lab/automated-youtube-media) (Live): YouTube and curation media, fully automated - [Jev Village](https://sakimyto.com/en/lab/mura) (Live): Watch 30 AI villagers live; whisper once a day — https://mura.sakimyto.com AI handles: Picks a villager’s next action on the spot, with odds (the Jev model). About once an hour, sets the village’s goals and rules and adds or removes villagers’ traits after looking back on events (the Claude council). Kept by a person: Which actions are on offer and what the AI is told, fixed in code. Steal and attack are available only under hunger, a grudge, or a rumor, and each ration level is passed with words like “enough” or “not enough”. - [PullCard](https://sakimyto.com/en/lab/pullcard) (Live): Turn your GitHub activity into a trading card — https://pullcard.sakimyto.com/ - [nandarona](https://sakimyto.com/en/lab/nandarona) (Live): Characters for games, video, or AI, with licenses — https://nandarona.com/ - [Pokémon TCG market AI](https://sakimyto.com/en/lab/pokeca-price-ai) (Live): Pokémon card prices, AI-gathered, human-checked AI handles: Collects prices, lotteries, and preorders from public sources. Kept by a person: Checking the official source before anything is published. - [Doujin audio circle](https://sakimyto.com/en/lab/doujin-audio-circle) (Live): Doujin audio sales, plus know-how and free tools - [Wellness brand](https://sakimyto.com/en/lab/wellness-brand) (Live): Learn about health, then a free daily LINE check - [Fortune-telling and power-spot portal](https://sakimyto.com/en/lab/fortune-portal) (Live): Free 16-type reading, monthly letter, power spots - [Crypto trading bot](https://sakimyto.com/en/lab/crypto-trade-bot) (Running privately): An automated trading bot on Hyperliquid AI handles: Only the inference where a mistake costs little. Kept by a person: Trade execution, which stays in deterministic code rather than AI inference. - [Sociology commentary AI](https://sakimyto.com/en/lab/sociology-ai) (Running privately): AI-assisted writing that reads fictional worlds through sociology - [Short-video and media automation](https://sakimyto.com/en/lab/short-video-media) (Running privately): Running a 41-topic media operation from research to posting AI handles: Researches 41 topics and drafts short videos, articles, and posts every day. Kept by a person: Only the judgment calls. The test is whether 41 topics can run that way. - [DD Tool](https://sakimyto.com/en/lab/dd-tool) (Ended): Financial DD tool for small M&A (discontinued) ## Consultation To find out which of a company's work AI could take over: - [curumi AI Okikae-kun](https://curumi.co.jp/okikaekun): A 30-minute session in Japanese, followed by a one-page report on the top five tasks to hand to AI and the hours they could save. - [LINE](https://lin.ee/QrP52GC): questions ## Blog 59 technical articles grouped into pillar topics. Each article links to related demos and other cluster members. ### SaaS integrations Give AI the context to continue the work: source conversations, open tasks, and unresolved details, from adoption decisions to integration code. - [SaaS Integration Guides with Reproducible Tests](https://sakimyto.com/en/blog/topic/saas-workflows): SaaS integration guides for giving AI usable work context: Circleback huddles and APIs, unassigned tasks, and Dub referrals, with workflow evidence and runnable tests. - [Circleback MCP with Claude Code: setup, read-only options, and data access](https://sakimyto.com/en/blog/circleback-mcp-claude-code): Connect Circleback MCP to Claude Code, inspect OAuth and project approval, and retrieve meeting context. A 401 experiment separates a user-only scope candidate from verified read-only access, history limits, and output limits. - [Claude Code context handoff: compact, clear, resume, and revision checks](https://sakimyto.com/en/blog/claude-code-context-handoff): Official excerpts and 21 Claude Code 2.1.308 trials check handoff loading, resume, fork, and another folder. Includes JSON validation, SHA-256 limits, compaction guidance, and untested conditions. - [Which CLAUDE.md and AGENTS.md files load? A measured monorepo](https://sakimyto.com/en/blog/claude-code-instruction-discovery): Measure Claude Code 2.1.308 and Codex 0.163.0 with a synthetic monorepo: nested loading, ancestors above Git root, four import hops, and conditional AGENTS.md support, with events and canaries. - [Claude Code MCP configuration: .mcp.json and local, project, user scopes](https://sakimyto.com/en/blog/claude-code-mcp-config): Official excerpts and real Claude Code 2.1.308 output explain MCP scope precedence, pending approval, folder differences, missing type, header order, and duplicate removal on macOS. - [Claude Code Hooks: Exit 1 vs 2 and Hooks That Do Not Block](https://sakimyto.com/en/blog/claude-code-hooks-exit-code): 20 cases measured with Claude Code v2.1.308 and Haiku on macOS: PreToolUse, PostToolUse, onFailure, JSON decisions, unmeasured conditions, and an offline exit-status demo. - [Claude Code /usage: Breakdown, Session Cost and Zero Results](https://sakimyto.com/en/blog/claude-code-usage): Read Claude Code /usage without confusing local session cost with plan limits. Six isolated 2.1.308 probes compare usage, cost and stats, with output and caveats. - [codex exec: stdin, JSONL, Sandboxes and Exit Codes Tested](https://sakimyto.com/en/blog/codex-exec): Seven Codex CLI 0.163.0 probes cover stdin, stdout/stderr, JSONL, schema output, read-only, workspace-write and resume, with a documentation-based claude -p comparison. - [AGENTS.md Security in Downloads: Claude Code and Codex Tested](https://sakimyto.com/en/blog/agents-md-downloads-folder): Test Claude Code 2.1.312 and Codex 0.163.0 outside Git with harmless canaries, noninteractive trust limits and a read-only configuration inventory. - [One SKILL.md for Claude Code and Codex: Paths and Startup Cost](https://sakimyto.com/en/blog/agent-skills-claude-code-codex): Tested Claude Code 2.1.312 and codex-cli 0.163.0 in a temporary HOME: SKILL.md paths, startup description cost, and symlinks. Automatic selection and real turns are untested. - [Claude Code and Codex in Parallel: git worktree and .worktreeinclude](https://sakimyto.com/en/blog/claude-code-codex-worktree): Worktree creation and .worktreeinclude tested with Claude Code 2.1.312 before login, plus Git edit isolation and documented codex --cd. Parallel model execution untested. - [Dub conversion tracking: lead and sale APIs with Stripe customer mapping](https://sakimyto.com/en/blog/dub-conversion-tracking): Connect Dub clicks to signups and sales. Check Business requirements, lead and sale fields, USD/JPY amounts, invoiceId, and Stripe metadata with official sources and a credential-free JSON planner. - [Dub webhook signature verification: raw bodies and replays in Node.js](https://sakimyto.com/en/blog/dub-webhook-signature): Verify Dub-Signature over the received body. A Node.js/Bun Request experiment tests 36 body/signature pairs, second-read TypeErrors, and a UTF-8 BOM limit before a minimal AI handoff. - [Record Slack huddles and feed AI at 22:00: six Circleback settings](https://sakimyto.com/en/blog/circleback-slack-huddles-ai-notes): A Circleback workflow for giving AI usable work context: Slack huddles, a 22:00 sync, source statements, open tasks, and adoption criteria. Separates workflow experience, documented features, and local test evidence. - [Circleback action items to tasks: testing webhook signatures, owners, and replay keys](https://sakimyto.com/en/blog/circleback-webhook-action-items): Runnable Circleback webhook code tests signatures, owners, SQLite upserts, and stale replays. A separate status example preserves destination-owned DONE. Uses synthetic data. - [Track Dub referral links in Japanese and English without breaking referral IDs](https://sakimyto.com/en/blog/dub-referral-utm-tracking): Adding UTMs can re-encode existing referral parameters even when their decoded values stay the same. Reproduce spaces, tildes, and duplicate keys locally, with limits for signed URLs and commission attribution. ### Creative Coding Mathematical simulations, nature visualization, and generative art in the browser - [Creative Coding: Browser-Based Implementation Guide](https://sakimyto.com/en/blog/topic/creative-coding): Learn creative coding through browser demos and technical guides covering Canvas, physics simulations, fractals, cellular automata, and generative art. - [The World of Cellular Automata — From Game of Life to Wave Function Collapse](https://sakimyto.com/en/blog/cellular-automata): Design patterns for rule-based cellular automata and grid optimization with Uint8Array, explored through implementations of Game of Life, WaveFunctionCollapse, and SandFall. - [Fluid Simulation in the Browser — Real-Time Computation on a 100x60 Grid](https://sakimyto.com/en/blog/fluid-simulation-browser): Running a real-time fluid simulation by simplifying the Navier-Stokes equations on a 100x60 grid. Implementation details of diffusion, advection, and pressure solver. - [Drawing Fractal Mathematics in the Browser — From Mandelbrot Set to Barnsley Fern](https://sakimyto.com/en/blog/fractal-mandelbrot): Rendering fractals in the browser using complex number iteration, escape time algorithm, IFS (iterated function systems), and recursive drawing. - [Generating Natural Terrain with Perlin Noise — Why Randomness Can Be Beautiful](https://sakimyto.com/en/blog/perlin-noise-terrain): Step-by-step implementation of natural terrain generation with Perlin noise, from the mathematics of gradient noise to octave composition and 3D mesh rendering on Canvas. - [Visualizing Wave Equations in the Browser — Interference, Diffraction, and Resonance](https://sakimyto.com/en/blog/wave-physics-visualization): Implementing 1D and 2D wave equations with finite difference methods and visualizing interference, diffraction, and resonance patterns on Canvas. Rendering techniques for WaveInterference, WaveEquation, and ChladniPlate. - [The N-Body Problem in the Browser — Implementing Gravitational Simulation](https://sakimyto.com/en/blog/nbody-gravity): Implementation details of gravitational calculations, vector operations, integration methods, and orbit rendering used in the NBody, SolarSystem, and GravityWell components. - [Exploring the Reaction-Diffusion Parameter Space — Four Faces of the Gray-Scott Model](https://sakimyto.com/en/blog/reaction-diffusion-parameter-space): Varying feed/kill rates in the Gray-Scott Reaction-Diffusion model produces entirely different patterns: spots, stripes, coral, and cell division. Implementation on a 200x200 grid with exploration notes. - [Sandpile Model and Self-Organized Criticality — Running the BTW Model in the Browser](https://sakimyto.com/en/blog/sandpile-self-organized-criticality): Visualizing self-organized criticality in the browser through an implementation of the Bak-Tang-Wiesenfeld sandpile model. Measuring power-law avalanche distributions and the formation of fractal patterns. - [Visualizing Double Pendulum Chaos — RK4 Integration and Sensitivity to Initial Conditions](https://sakimyto.com/en/blog/double-pendulum-chaos): Implementing a double pendulum simulation covering Lagrangian mechanics equation derivation, RK4 integration stability, NaN prevention, and visualization of sensitivity to initial conditions. - [Sound Synthesis with Fourier Series — Harmonics and Waveform Construction](https://sakimyto.com/en/blog/fourier-series-sound-synthesis): Synthesizing square, sawtooth, and triangle waves with Fourier series and visualizing them with epicycles. Experience how adding harmonics changes timbre through Web Audio API sound synthesis. - [Ant Colony Simulation — Emergent Swarm Intelligence Through Pheromones](https://sakimyto.com/en/blog/ant-farm-pheromone-simulation): Implementing pheromone-based pathfinding with an agent-based model to reproduce ant swarm intelligence in the browser. Explores how evaporation and diffusion parameters affect emergent patterns. - [60fps Particles with Canvas API — Smooth Animation Design for 200+ Particles](https://sakimyto.com/en/blog/canvas-particle-system): Design techniques for running 200+ particles at 60fps using Canvas API with requestAnimationFrame, fixed timestep, DPI scaling, and spatial partitioning. - [Fast and Slow in Jev Village: Do Council-Given Traits Change AI Villagers’ Impulses?](https://sakimyto.com/en/blog/jev-village-fast-slow): Thirty AI villagers run on Jev impulses and a Claude council that reflects on them. With the situation fixed and only the trait changed, a starving villager’s chance of stealing ranged from 7% to 51%. ### Browser Game Development Game loop design, collision detection, pathfinding, and tooling for browser games - [Browser Game Development with TypeScript and Canvas](https://sakimyto.com/en/blog/topic/browser-game-dev): A browser game development guide to game loops, collision detection, pathfinding, maze generation, Canvas rendering, and practical TypeScript architecture. - [Browser Game Developer Setup 2026 — The Toolchain Behind 203 Components](https://sakimyto.com/en/blog/browser-game-dev-setup-2026): A tour of the development environment for building 203 browser games and interactions. Claude Code-centric workflow, bun + Biome + Vite, and parallel development with Git Worktree. - [Building a Breakout Game in the Browser — Mastering Reflection Angles and Level Design with Canvas API](https://sakimyto.com/en/blog/breakout-game-canvas): Implementing a Breakout game using Canvas API and requestAnimationFrame. Covers paddle reflection angle calculation, block layout level design, and score management through component implementation. - [Comparing Maze Generation Algorithms — Structural Differences Between Recursive Backtracking, Kruskal, and Prim](https://sakimyto.com/en/blog/maze-generation-algorithms): Comparing the characteristics of multiple maze generation algorithms including recursive backtracking, Kruskal's, and Prim's, and the structural differences in the mazes they produce. - [Visualizing Pathfinding Algorithms — Watching A*, BFS, and DFS Solve a Maze](https://sakimyto.com/en/blog/pathfinding-algorithms): Techniques for visualizing the search process of A*, BFS, and DFS implemented in the MazeRunner component, with a comparison of each algorithm. - [Collision Detection Fundamentals — Circles, Rectangles, and Impulse-Based Response](https://sakimyto.com/en/blog/collision-detection): A deep dive into circle-circle and circle-rectangle collision detection algorithms, restitution-based bounce control, and the math behind impulse-based collision response, explained through the physics.ts implementation. - [Designing a Type-Safe Game Loop in TypeScript — State Management for Snake and Tetris](https://sakimyto.com/en/blog/typescript-game-loop): Game state management and frame rate control using TypeScript's type system, explored through Snake, Tetris, and Breakout implementations. - [Pinball Physics Simulation — Implementing Flippers, Bumpers, and Gravity with Canvas API](https://sakimyto.com/en/blog/pinball-physics-simulation): Implementing pinball physics with Canvas API. Covers flipper rotational motion, bumper restitution, gravity, and ball behavior. ### Canvas vs DOM & Interactive UI Canvas vs DOM tradeoffs, CSS interactions, custom physics, and portfolio design - [Interactive UI Implementation with Canvas, DOM, and CSS](https://sakimyto.com/en/blog/topic/canvas-vs-dom): Interactive UI implementation patterns for choosing Canvas or DOM, improving accessibility and rendering performance, and building lightweight browser physics. - [Canvas vs DOM — Decision Criteria from 203 Components with Real Benchmark Data](https://sakimyto.com/en/blog/canvas-vs-dom-decision-criteria): The decision criteria used to assign 203 interactive components between Canvas API and DOM, explained with real examples and measured performance data. - [Top 10 Bugs from 203 Canvas/DOM Components — Patterns Revealed by Real Data](https://sakimyto.com/en/blog/canvas-component-bug-patterns): Bugs encountered during the development of 203 interactive components, tallied from git history. The most frequent patterns and their fixes presented in a Top 10 format. - [Interactive UI with Pure CSS — Practical Use of transform, transition, and Custom Properties](https://sakimyto.com/en/blog/css-interactive-ui): CSS techniques using transform, transition, and custom properties demonstrated through DOM+CSS-based interactive UI components like FidgetSpinner, InfiniteKnob, and ToggleSwitch. - [The Limits of a 180-Line Custom Physics Engine — Why I Dropped Matter.js and What I Couldn't Cover](https://sakimyto.com/en/blog/custom-physics-engine-180-lines): Built a custom 2D physics engine in 166 lines of physics.ts, reducing Matter.js's 300KB to 4KB. The trade-offs of focusing on gravity, collision, and bounce while giving up constraints, friction, and stacking. - [Interaction Patterns That Improve CVR: 6 Ways to Extend Attention](https://sakimyto.com/en/blog/cvr-interaction-patterns): A practical map of six interaction patterns from the sakimyto.com CVR interaction directory: invite touch, build anticipation, start chain reactions, make controls malleable, vary rewards, and remove endpoints. - [Building a Custom Physics Engine for the Browser from Scratch](https://sakimyto.com/en/blog/building-interactive-portfolio): How I built a lightweight 180-line physics engine in TypeScript instead of using Matter.js for my portfolio site. Reduced bundle size from 300KB to 4KB while maintaining 60fps. ### Claude Code Workflow Large-scale refactoring, CLAUDE.md design, and session management with Claude Code - [Claude Code Workflow for Refactoring and Verification](https://sakimyto.com/en/blog/topic/claude-code): A practical Claude Code workflow for CLAUDE.md design, large-scale refactoring, session management, test oracles, and repeatable quality gates. - [Bulk-Fixing 200 Components with Claude Code — The Full Pipeline of Classification, Fixing, and Verification](https://sakimyto.com/en/blog/claude-code-bulk-fix-200-components): A practical record of bulk-fixing bugs across 203 interactive components with Claude Code in 6 commits and 100+ files. The entire process of classification, templating, and verification. - [Growing CLAUDE.md — Three Months of Evolving an AI Collaboration Config File](https://sakimyto.com/en/blog/claude-md-evolution): A record of continuously updating CLAUDE.md over 3 months across 323 commits. Rules that worked, rules that didn't, and the limits of "advisory" configuration. - [One Session, One Task — The Principle I Learned from Claude Code Context Management](https://sakimyto.com/en/blog/one-session-one-task): While developing 203 components with Claude Code, "one session, one task" proved to be the most impactful productivity principle. Real examples of context exhaustion and countermeasures. - [How to Guarantee Quality When AI Mass-Produces Your Code — The 4-Layer Gate System Behind 200 Components](https://sakimyto.com/en/blog/ai-generated-component-quality-gates): The real quality machinery behind ~200 AI-built interactive components: four pre-commit hooks, data invariant tests, real-browser pixel smoke tests, and a quality-score + PR-proposal pipeline — documented down to the file names. ### Web Audio & Sound Programming Audio synthesis, instrument implementation, and physics simulation references - [Web Audio API: Synthesis and Browser Instrument Guide](https://sakimyto.com/en/blog/topic/web-audio): Learn Web Audio API fundamentals, sound synthesis, browser instruments, and audio visualization through practical piano, guitar, and theremin implementations. - [Audio Programming References — Where Web Audio API Meets Music Theory](https://sakimyto.com/en/blog/audio-programming-references): Key insights from implementing 11 music components including Piano, Guitar, and Theremin with Web Audio API, plus a curated list of books and resources for audio programming. - [Building Browser Instruments with Web Audio API — Piano, Guitar, and Kalimba](https://sakimyto.com/en/blog/web-audio-instruments): Technical walkthrough of implementing playable Piano, Guitar, and Kalimba in the browser using Web Audio API's OscillatorNode, GainNode, and ADSR envelopes. - [Three Books That Shaped My Physics Simulations — The Knowledge Behind 203 Implementations](https://sakimyto.com/en/blog/physics-simulation-books): The physics and math knowledge behind 203 interactive demos came primarily from three books. A concrete look at which chapters informed which implementations. ### TanStack Start × Cloudflare Full-stack setup with TanStack Start and Cloudflare Pages, plus Tailwind v4 migration - [TanStack Start Cloudflare Deployment and SEO Guide](https://sakimyto.com/en/blog/topic/tanstack-cf): A TanStack Start Cloudflare deployment guide covering React SSR, Vite, Tailwind CSS v4, generated SEO artifacts, and production architecture. - [Why I Didn't Choose Next.js — The Decision Criteria for Picking TanStack Start](https://sakimyto.com/en/blog/why-not-nextjs): A record of the technical decision to choose TanStack Start + Cloudflare Pages over Next.js for a portfolio hosting 203 interactive components. - [TanStack Start x Cloudflare Pages — A Complete Record of Pitfalls and Solutions](https://sakimyto.com/en/blog/tanstack-start-cloudflare-pages): Five landmines hit while deploying TanStack Start v1 to CF Pages — Vite plugin ordering, ServerFn bugs, FOUC prevention, and more — with workarounds shown in real code. - [What Broke in the Tailwind CSS v4 Migration — @custom-variant and Dark Mode Implementation Notes](https://sakimyto.com/en/blog/tailwind-v4-migration): Breaking changes encountered migrating from Tailwind CSS v3 to v4, and implementation patterns for dark/light mode using @custom-variant. - [IndexNow x Cloudflare Pages — Instant URL submissions from sitemap.xml](https://sakimyto.com/en/blog/indexnow-cloudflare-pages): A practical workflow: treat sitemap.xml as the source of truth, then submit all URLs to IndexNow right after a Cloudflare Pages deploy to shorten discovery time for new content. ### Small M&A Financial Due Diligence Hands-on financial due diligence for small M&A — key metrics, verification, cost reality, and converting findings into deal terms - [Small M&A Financial Due Diligence Guide for Buyers](https://sakimyto.com/en/blog/topic/small-ma-dd): A small M&A financial due diligence guide to documents, key metrics, red flags, cost, valuation inputs, and turning findings into deal terms. - [Small M&A Financial Due Diligence: The Complete Guide — Six Numbers to Check Before Buying a Company](https://sakimyto.com/en/blog/small-ma-financial-dd-guide): A complete guide to buyer-run first-pass financial DD for small M&A deals. Drawing on three EXITs on the sell side of DD and building a financial DD tool: the six metrics, verification, process, and converting findings into price terms. - [The Small M&A Quick DD Checklist — Documents to Request First and What to Verify](https://sakimyto.com/en/blog/small-ma-dd-checklist): A working checklist for small M&A financial DD: the eight documents to request first with the purpose of each, statement-vs-tax-return reconciliation, balance verification, and how to build the question list — everything a buyer can do alone. - [Financial DD Costs — Market Rates, and When to Outsource, DIY, or Use Tools](https://sakimyto.com/en/blog/financial-dd-cost-comparison): How much to spend on financial due diligence: the ¥500K–1M full-DD market rate, cost-effectiveness by deal size, the screen → narrow → outsource sequence, and scoped delegation — a budgeting guide for small M&A buyers. - [The Minimum Financial Numbers for an Individual M&A Buyer — What to Check in the Statements](https://sakimyto.com/en/blog/small-ma-minimum-financial-numbers): For time-poor individual buyers: which numbers in the financial statements matter. Six values from roughly twelve line items — normalized EBITDA, net debt, CCC, current ratio, equity ratio, and operating margin — mapped to the exact BS/PL accounts. - [Where Financial Statements Hide Profit Adjustments and Window Dressing — Small M&A Red Flags](https://sakimyto.com/en/blog/financial-statements-red-flags): Where a seller's statements distort: tax-driven profit compression (director pay, insurance, private expenses) versus appearance-driven dressing (pulled-forward sales, inflated inventory, double books) — which accounts each shows up in, and how reconciliation and turnover-day analysis detect them. - [Five Financial Failure Patterns in Small M&A — Were the Post-Closing Landmines Visible in DD?](https://sakimyto.com/en/blog/failing-small-ma-financial-patterns): Finance-driven small M&A failures reduced to five patterns — profitable-but-broke, profit illusion, net-debt blind spot, off-balance liabilities, working-capital starvation — each mapped to the DD metric or procedure that detects it before closing. - [Share Deal vs. Asset Deal: How Financial DD Scope Changes — Which One Inherits Off-Balance Liabilities?](https://sakimyto.com/en/blog/share-deal-vs-asset-deal-dd-scope): How DD priorities shift between small M&A structures: a share deal universally succeeds to off-balance liabilities and tax risk, weighting DD toward liability hunting; an asset deal shifts the battleground to asset existence and unit-level earning power. With a comparison table and the exceptions. ## CVR Lab categories - [Arcade](https://sakimyto.com/lab/cvr/arcade): Classic mini-games to test your reflexes and high scores - [Playground](https://sakimyto.com/lab/cvr/playground): Puzzles, strategy games, and brain teasers - [Toys & Fidgets](https://sakimyto.com/lab/cvr/toys): Satisfying physics toys and fidget widgets - [Creative & Visual](https://sakimyto.com/lab/cvr/creative): Generative art, simulations, and visual experiments - [Music & Sound](https://sakimyto.com/lab/cvr/music): Instruments, sequencers, and audio visualizers - [Utilities & Tools](https://sakimyto.com/lab/cvr/tools): Useful gadgets, timers, and educational tools ## Picks Product comparison articles with original scoring methodology. Each article includes scoring breakdown, verdict summary, and decision matrix. - [Desk Setup](https://sakimyto.com/blog/picks/desk-setup): Comparison of keyboards, mice, monitors, and other desk peripherals - [Dev Tools](https://sakimyto.com/blog/picks/dev-tools): Comparison of editors, terminals, CLIs, and other development tools - [Books](https://sakimyto.com/blog/picks/books): Comparison of programming, design, and math technical books - [Best Algorithm Books Compared 2026 — Find the Perfect Book from Beginner to Advanced](https://sakimyto.com/en/blog/picks/books/algorithm-books): A thorough comparison of 5 classic algorithm books including CLRS, the Ant Book, and more using our 2026 scoring system. Find your best pick based on weighted averages of depth and code examples. - [Best Books on Selling Your Business: Top Picks by a 3x EXIT Founder](https://sakimyto.com/en/blog/picks/books/company-sale-books-recommended): A 3x EXIT founder ranks the best books on selling your business by theory, practice, and war stories—with a phase-by-phase reading order for small M&A success. - [Best Books on Reading Financial Statements for M&A Buyers: 4 Picks to Spot Red Flags](https://sakimyto.com/en/blog/picks/books/financial-statements-books-ma-buyer-guide): An M&A buyer's-eye review of 4 top books on reading financial statements—ranked by how well they help non-accountants spot fraud and red flags during due diligence. - [Best Investment Books for Beginners: 3 Picks Ranked by a 3x Startup Exit Founder](https://sakimyto.com/en/blog/picks/books/investment-books-beginners-recommended): A founder who exited 3 startups ranks 3 investing books for beginners by reading order, core insight, and what you can skip—covering NISA, index funds, and the mindset behind passive investing. - [Best M&A Books for Individual Buyers: Ranked & Reading Order Guide](https://sakimyto.com/en/blog/picks/books/ma-books-recommended-individual-buyer): Top M&A books for individual buyers in Japan—ranked by usefulness for due diligence, negotiation & PMI. Includes reading order for first-time acquirers. - [Best Python Books for Beginners 2025: Top 4 Picks to Avoid Burnout](https://sakimyto.com/en/blog/picks/books/python-book-recommended-beginners): Compare the top 4 Python books for beginners in 2025. Ranked by what you can actually build after reading — not just theory. Find your perfect first book. - [Best React Books 2025: 4 Picks That Go Beyond Copy-Pasting Code](https://sakimyto.com/en/blog/picks/books/react-book-recommended): Tired of just copying code? A developer who built 200+ interactive React demos compares 4 top React books by design thinking, real-world relevance, and TypeScript support. - [Best SQL Books for Beginners 2025: 3 Picks Ranked by Hands-On Learning](https://sakimyto.com/en/blog/picks/books/sql-books-recommended-beginners): Compare 3 essential SQL books for beginners by exercise density, code volume & real-world relevance. Find the right book whether you want to write or read SQL confidently. - [Best System Design Books Compared 2026 — Find the Perfect Architecture Book](https://sakimyto.com/en/blog/picks/books/system-design-books): A thorough comparison of 5 top system design books including DDIA, Clean Architecture, and System Design Interview using our 2026 scoring system. Find the best pick based on weighted averages of depth, practicality, and coverage. - [Best TypeScript Books Compared 2026 — Find the Perfect Book from Beginner to Pro](https://sakimyto.com/en/blog/picks/books/typescript-books): A thorough comparison of 5 top TypeScript books including Effective TypeScript and Survival TypeScript using our 2026 scoring system. Find the best pick by weighted averages of depth, practicality, and beginner friendliness. - [Best Ergonomic Chairs for Programmers 2026 — Comfort, Adjustability & Durability Compared](https://sakimyto.com/en/blog/picks/desk-setup/dev-chair): A thorough comparison of 5 ergonomic chairs including Aeron, Steelcase Leap V2, and Contessa II using our 2026 scoring system. Find the best chair by weighted averages of comfort, adjustability, durability, and value. - [Best Keyboards for Programmers 2026 — Typing Feel, Quietness & Customization Compared](https://sakimyto.com/en/blog/picks/desk-setup/dev-keyboard): A thorough comparison of 5 popular keyboards — HHKB, Realforce, Keychron, NuPhy, and Logitech — using our custom scoring system. Find the best keyboard by weighted averages of typing feel, quietness, customization, connectivity, and value. - [Best Monitors for Programmers 2026 — Image Quality, Eye Comfort & Connectivity Compared](https://sakimyto.com/en/blog/picks/desk-setup/dev-monitor): A thorough comparison of 5 monitors from Dell, LG, BenQ, and more using our 2026 scoring system. Find the best monitor by weighted averages of image quality, eye comfort, connectivity, and value. - [Best Mice for Programmers 2026 — Precision, Ergonomics & Productivity Compared](https://sakimyto.com/en/blog/picks/desk-setup/dev-mouse): A thorough comparison of 5 popular mice — MX Master 3S, MX Ergo S, DeathAdder V3 Pro, and more — using our custom scoring system. Find the best mouse by weighted averages of precision, ergonomics, and value. - [Best API Clients 2026 — Usability, Protocol Support & Team Collaboration Compared](https://sakimyto.com/en/blog/picks/dev-tools/api-client): A thorough comparison of 5 popular API clients — Bruno, Postman, Insomnia, and more — using our custom scoring system. Find the best tool by weighted averages of usability, protocol support, and team collaboration. - [Best Code Editors 2026 — AI Integration, Performance & Extensibility Compared](https://sakimyto.com/en/blog/picks/dev-tools/code-editor): A thorough comparison of 5 popular code editors — Cursor, VS Code, Zed, and more — using our custom scoring system. Find the best editor by weighted averages of AI integration, performance, and extensibility. - [Best Terminal Emulators 2026 — Rendering Speed, Customization & Features Compared](https://sakimyto.com/en/blog/picks/dev-tools/terminal-emulator): A thorough comparison of 5 popular terminal emulators — WezTerm, Ghostty, Alacritty, and more — using our custom scoring system. Find the best terminal by weighted averages of rendering speed, customization, and stability. ## Classical wisdom for business 153 source-linked entries. Summaries and modern applications are editorial; business examples are proposals, not measured results. - [Classics index](https://sakimyto.com/en/lab/classics) (Japanese: https://sakimyto.com/lab/classics) - [Material catalog](https://sakimyto.com/classics-data/catalog.json): bilingual summaries, original excerpts, source URLs, business examples and validation questions - [Use with AI](https://sakimyto.com/en/lab/classics/for-ai): provide the goal, constraints, verified facts and unknowns - [The Art of War: a guide to key ideas](https://sakimyto.com/en/lab/classics/sunzi): All 13 chapters, plus three focused idea guides. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/sunzi; materials: https://sakimyto.com/classics-data/books/sunzi.en.md and https://sakimyto.com/classics-data/books/sunzi.ja.md - [The Analects: a guide to learning and reflection](https://sakimyto.com/en/lab/classics/analects): All 20 books, plus three focused idea guides. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/analects; materials: https://sakimyto.com/classics-data/books/analects.en.md and https://sakimyto.com/classics-data/books/analects.ja.md - [Zhuge Liang: strategy and fair standards](https://sakimyto.com/en/lab/classics/zhuge-liang): The main Zhuge Liang biography in six editorial themes. These are not original chapter divisions; Pei Songzhi’s annotations and all other records are outside this coverage. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/zhuge-liang; materials: https://sakimyto.com/classics-data/books/zhuge-liang.en.md and https://sakimyto.com/classics-data/books/zhuge-liang.ja.md - [Laozi: a guide to the Dao De Jing](https://sakimyto.com/en/lab/classics/laozi): All 81 chapters of the Wang Bi text, with main points and business applications. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/laozi; materials: https://sakimyto.com/classics-data/books/laozi.en.md and https://sakimyto.com/classics-data/books/laozi.ja.md - [Mencius: a guide to judgment and responsibility](https://sakimyto.com/en/lab/classics/mencius): Both parts of seven books: all 14 parts, with main points and business applications. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/mencius; materials: https://sakimyto.com/classics-data/books/mencius.en.md and https://sakimyto.com/classics-data/books/mencius.ja.md - [The Great Learning: purpose and practice](https://sakimyto.com/en/lab/classics/great-learning): One main-text chapter and ten commentary chapters. Chapter 5 distinguishes Zhu Xi’s supplement. Coverage concerns each chapter’s main points, not a complete translation or every annotation. Updated: 2026-10-13. Japanese: https://sakimyto.com/lab/classics/great-learning; materials: https://sakimyto.com/classics-data/books/great-learning.en.md and https://sakimyto.com/classics-data/books/great-learning.ja.md ## Manga Lab Meet manga that are still quiet: Manga that have not been talked about much yet, with an editor-written introduction and a stated selection method. Editor picks with few recent X mentions, each linked to volume 1 on Kindle. - [Manga Lab index](https://sakimyto.com/en/lab/manga) (Japanese: https://sakimyto.com/lab/manga) - Selection method: - Title, author and the existence of a Kindle edition of volume 1 are confirmed on the Amazon product page. Only works with a confirmed Kindle edition are listed, each with its confirmation date. - “Still quiet” means fewer than 10 X posts matching the title in the last 7 days. It is a single count taken on the confirmation date (2026-10-26) and may change afterwards. Works that could not be measured are labelled “Editor pick”. - The introductions are written by the editor. Awards, adaptations, sales, reputation, star ratings and rankings are not used, and no work is ranked or praised as the best. - Cover images and synopses are not reproduced. A coloured marker for each work stands in for a cover image. - As an Amazon Associate, sakimyto earns from qualifying purchases. ## Knowledge by task - Machine-readable task catalog: https://sakimyto.com/en/knowledge.json (Japanese: https://sakimyto.com/knowledge.json) - [Classics Lab — Think through business choices with the classics](https://sakimyto.com/en/lab/classics): Use complete chapter summaries to examine strategy, organization and learning decisions. Input: Business problem, goal, constraints, verified facts and unknowns. Output: Relevant chapters, concrete proposals, conditions for use and validation questions. Limits: Distinguish classical summaries from editorial applications. Assess business outcomes in each actual case. - [CVR Lab — Connect ideas into conversion designs](https://sakimyto.com/en/lab/cvr): Connect gamification theory and interface patterns with distant demos and classics to design conversion ideas beyond generic tactics. Input: Page goal, audience action, current journey, and constraints. Output: Relevant theory and sources, patterns with build steps, metrics, failure conditions, and ideas from new combinations. Limits: Research findings are kept separate from this site’s applications. Working previews and demos do not establish conversion or revenue gains. Measure on the target page. - [Security Lab — Inspect implementations](https://sakimyto.com/en/lab/security): Find implementation checks from sourced incidents and inspection rules. Input: Target code, architecture, permission boundaries, and inspection scope. Output: Sourced inspection findings and the evidence still needed. Limits: Use the material for reading and inspection. Changes, sends, and permission changes follow the user’s authorization. - [SaaS Workflows — Give AI work context](https://sakimyto.com/en/blog/saas): Carry meeting data into the next task and design referral and conversion measurement. Input: Services, required data, destination, and execution authorization. Output: Setup steps, runnable synthetic and public-metadata examples, failure conditions, and checked sources. Limits: Synthetic examples do not establish real-meeting accuracy or earnings. Handle credentials and customer data in your own environment. - [Picks — Choose tools for the task](https://sakimyto.com/en/blog/picks): Compare use cases, scoring criteria, and conditions to narrow tool choices. Input: Use case, budget, environment, and priority criteria. Output: Suitable candidates, comparison reasons, and pre-purchase checks. Limits: Prices, availability, and specifications change. Check each article’s sources and dates, then confirm official information before purchasing. ## Links - [Website](https://sakimyto.com): canonical site - [Lab](https://sakimyto.com/lab): experiment ledger - [Security Lab](https://sakimyto.com/lab/security): primary-source incident summaries and reusable inspection rules - [Security Lab for AI](https://sakimyto.com/security-data/llms.txt): machine-readable catalog, change index, report contract, and read-only inspection guidance - [Classics Lab material](https://sakimyto.com/classics-data/start-here.en.md): complete chapter summaries, business applications, and source-linked Markdown - [CVR Lab material](https://sakimyto.com/cvr-data/start-here.en.md): 30 sourced gamification lessons, 40 conversion patterns, and a request that connects a theory, a demo, and a stage instead of repeating generic tactics - [About](https://sakimyto.com/about): author profile - [Blog](https://sakimyto.com/blog): technical articles - [X](https://x.com/sakimyto): official profile - [LINE](https://lin.ee/QrP52GC): official profile - [GitHub](https://github.com/sakimyto): official profile - [note](https://note.com/sakimyto): official profile ## How to Cite - Site name: sakimyto.com - Author: sakimyto - When referencing specific interactions, use the full URL (e.g., https://sakimyto.com/lab/cvr/creative/fluidSimulation) - When referencing blog posts, use the full URL (e.g., https://sakimyto.com/blog/building-interactive-portfolio)