Yakumo Magazine

LEAD STORY

BUSINESS

TECH

SERIES

Series

SERIES

Bateson — General-Purpose Booking Engine

Design, implementation, and operations log of bateson, a general-purpose booking engine. Following the design process of keeping Calendar / Email / Storage / Scheduler swappable via Adapter pattern and pushing toward multi-tenancy through tenant abstraction.

SERIES

mcluhan — Owned Media Operations Engine

Design, implementation, and operations log of mcluhan, a general-purpose owned media engine. Structuring the editorial pipeline for the AI mass-production era with state machines, Gates, SSOT, and retrospective accumulation.

SERIES

Synapse — Cross-Functional Agent Organization

Design, implementation, and operations log of Synapse, a cross-functional agent organization built on Claude Code. Following the area-director pattern, skill delegation, .claude/agents structure, and the 3-stage business redesign approach.

SERIES

montage — AI Video Production Pipeline

Design, implementation, and operations log of montage, an AI video production pipeline combining Claude Code agents with Remotion. Following the agent division of labor, Block Schema, and type-definition-driven structure.

SERIES

laplace — Financial Data Auto-Collection Pipeline (formerly medallion)

Design, implementation, and operations log of laplace (formerly medallion), a Python-based data collection tool that auto-fetches earnings reports from JPX, TDnet, and IR sources every morning. Following XBRL/PDF disambiguation, ticker-specific YAML config, and daily launchd execution.

All Articles

CLUSTER
TAG
01
Three Layers of Pillar Design (Structure / Vocabulary / Prose Density)

How to diagnose pillar quality across three layers—structure, vocabulary, and prose density—and when to reclassify a cluster.

Engineering 2026-05-26
02
Business Portfolio Design on an AI-Native Foundation

Decision framework for outsourcing vs. productization on an AI-native org foundation, with bateson as a practical case study.

Business 2026-05-26
03
Phase Design to Keep bateson Single-Tenant from Blocking Multi-Tenancy

Three Phase A rules prevent breaking changes at Phase B: tenantId in all API args, adapter DI, and cancelToken HMAC hashing.

Engineering 2026-05-26
04
Constraints for Maintaining Pillar Prose Density — Banning Code Fragments and Foregrounding Business Decision Vocabulary

No inline code and business-decision subjects: two must_avoid constraints that preserve prose density in business-cluster pillars.

Engineering 2026-05-26
05
Representing Sister Pillar Relationships as First-Class Schema — A Brief Extension Proposal

Adding sister_pillar_slug to brief YAML separates sister pillars from spokes, aligning graph generation and cross-link skills.

Engineering 2026-05-26
06
Separating Cluster and Persona — Designing the Outer and Inner Axes

Cluster owns distribution/KPI; persona owns narrative and terminology. Separate both in SSOT and run through the pipeline.

Engineering 2026-05-25
07
Deploying Claude Code for Non-Engineers: CLAUDE.md and Permission Pitfalls

Practical guide for tech leads to design safe Claude Code environments via CLAUDE.md scoping, skill I/O, and permission models.

Engineering 2026-05-25
08
Implementing Cluster SEO — Passing Pillar Primary to Spoke Secondary

Implement cluster SEO by using pillar primary keywords as the cluster axis and passing them down to spokes as secondary keywords.

Business 2026-05-25
09
Designing Quality Gates to Fail on Missing Personas

Prevent writing without defining personas using blog-gate G11. Learn how machine detection ensures strategic quality assurance.

Business 2026-05-25
10
Narrowing audience.primary Clarifies Sister Pillar and Spoke Design

Narrowing a pillar's audience.primary to one reveals excluded personas as cluster design gaps, clarifying sister pillar and spoke roles.

Engineering 2026-05-25
11
Automating Brand Rule Checks — Context-Aware Detection of Self-Reference vs. External Reference

Prevent referring to Yakumo as a "company" with a context-aware gate. Learn to combine proximity analysis, allow-lists, and regex.

Engineering 2026-05-24
12
Bulk Video Production with Claude Code + Remotion — Full montage Pipeline Architecture

The montage design for bulk video production via 4-agent division and Remotion type definitions. Full disclosure of the pipeline DAG, Block Schema, and Zod validation.

Engineering 2026-05-24
13
Expanding blog-gate into a Strategic Gate — Moving from Cosmetic Detection to G-Rule Structuring

A pattern for extending blog-gate G-rules to structurally detect missing SEO, audience, and cluster information. This article outlines how to design systems that allow machines to catch architectural failures, such as missing pillar strategy layers, before content production begins.

Business 2026-05-24
14
Corporate Vocabulary Proximity Detection: Solo Practitioner Brand Consistency

A hybrid design for detecting corporate terms using forbiddenWords and proximity rules to protect the solo practitioner narrative.

Business 2026-05-24
15
Scaling Video with AI Agents — montage ROI and Operations Design

AI-agent video at scale: costs, quality gates, review design, and mid-term ROI — a no-code guide for execs and marketing leads.

Business 2026-05-24
16
Advancing Pre-publish Gates: From Plain Grep to Proximity Analysis

Fix false positives in quality gates using stripCodeContexts and proximity analysis to resolve self-contradictions.

Engineering 2026-05-23
17
Designing 'medallion' for Automated Daily Earnings Reports — XBRL/PDF Scraping and YAML Configuration

A deep dive into medallion's design for automated earnings collection. Covers XBRL/PDF reconciliation and YAML-driven pipelines.

Engineering 2026-05-23
18
Allow-list-driven Brand Check — SSOT Design for External Org Exceptions

How to centralize brand rule exception management in an SSOT. Defines allow-lists and reference patterns in brand.ts, with gate scripts referencing them.

Business 2026-05-23
19
Pre-publish Gate Design: Balancing False Positives and False Negatives

Learn how to design quality gates that balance strictness and flexibility using 3-level analysis and a two-stage fail/warn system.

Business 2026-05-23
20
Automating Financial Data Collection — medallion's ROI for Investment Decisions

What does it mean to automatically retrieve earnings data every morning at 5am? Using medallion as a case, this article examines labor cost comparisons, data quality, investment rationale, and paths to financial analysis for executives.

Business 2026-05-23

EDITOR'S NOTE

Let me be honest. In May 2026, Yakumo launched this publication with 48 articles. 37 of them were published on the same day. Every internal link was dead. Five days later, we pulled all of them. ---

Takumi Morimoto
all notes →