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Takafumi Endo | ROUTE06 profile picture

Takafumi Endo | ROUTE06

CEO @ ROUTE06, building AI-driven development services. Former EC founder, later acquired. MS in Information Science. Writing about AI-era software development, agents, and architecture.

Education

M.S., Graduate School of Information Sciences, Tohoku University

Pronouns

he/him

Work

CEO at ROUTE06,inc.

Where Agent Runtime Engineering Ends, Domain Runtime Engineering Begins

Where Agent Runtime Engineering Ends, Domain Runtime Engineering Begins

1
Comments
9 min read

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Why agent-browser and Playwright Work So Well Together

Why agent-browser and Playwright Work So Well Together

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Comments 5
8 min read
Codex Computer Use Changed the Agent Integration Boundary

Codex Computer Use Changed the Agent Integration Boundary

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8 min read
Agentic Software Will Have More Test Code Than Product Code

Agentic Software Will Have More Test Code Than Product Code

1
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8 min read
The Hard Part of Agent Evals Is Deciding What Counts as Green

The Hard Part of Agent Evals Is Deciding What Counts as Green

1
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7 min read
AIC: Packages Need an Interface for Coding Agents

AIC: Packages Need an Interface for Coding Agents

1
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11 min read
Installing OpenTelemetry Won't Close Your AI Agent's Feedback Loop

Installing OpenTelemetry Won't Close Your AI Agent's Feedback Loop

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Comments 2
10 min read
Why My Local Coding Agent Could Act but Couldn't Finish

Why My Local Coding Agent Could Act but Couldn't Finish

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11 min read
Why Legacy Rewrites Need a Judge, Not a Better Prompt

Why Legacy Rewrites Need a Judge, Not a Better Prompt

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10 min read
Why Athena/Iceberg Tends to Make Code the Spec

Why Athena/Iceberg Tends to Make Code the Spec

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9 min read
The Agent Runtime Got Heavy: Rethinking Sandboxes with Codex App Server

The Agent Runtime Got Heavy: Rethinking Sandboxes with Codex App Server

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13 min read
Designing Schema Boundaries for AI Agents

Designing Schema Boundaries for AI Agents

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12 min read
AWS Is Not Simpler. Agents Just Got Better at Reading It.

AWS Is Not Simpler. Agents Just Got Better at Reading It.

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6 min read
You Can't Review an Agent. You Can Review a Plan.

You Can't Review an Agent. You Can Review a Plan.

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12 min read
AI Agents Don't Need a Monorepo. They Need a Readable Codebase

AI Agents Don't Need a Monorepo. They Need a Readable Codebase

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7 min read
Let Aurora Sleep: Multi-Tenant SaaS Cost, Reconsidered with AI IaC

Let Aurora Sleep: Multi-Tenant SaaS Cost, Reconsidered with AI IaC

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9 min read
The Wrapper Got Heavy: Why ChatGPT Clones Are Runtime Problems Now

The Wrapper Got Heavy: Why ChatGPT Clones Are Runtime Problems Now

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10 min read
Your Fuzzer Is Only as Smart as Its Oracle

Your Fuzzer Is Only as Smart as Its Oracle

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8 min read
Every API Will Be Rebuilt for Agents

Every API Will Be Rebuilt for Agents

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8 min read
The Repo Is the Context: Why Agents Don’t Need History

The Repo Is the Context: Why Agents Don’t Need History

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7 min read
Rigor Compresses: Why AI Agents Need Graphs, Not More Context

Rigor Compresses: Why AI Agents Need Graphs, Not More Context

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8 min read
Why AI Agents Make Me Reach for SQLite

Why AI Agents Make Me Reach for SQLite

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10 min read
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