Reletter
Artwork for Taiyo's Substack

My personal Substack

Platform
Substack
PricingOnly free issuesPublishesDaily
Issues9Founded5 months agoLast Issue3 days ago
Active
Language
Japanese

Read this Newsletter

taiyoai.substack.com
Artwork for Taiyo's Substack

Latest Issues

AIが書いたテスト、バグを見逃していませんか? 条件式を変えて検知力を確かめる

AIに実装とテストを頼むと、どちらも短時間で揃います。でも、テストが全部通ったときに「このテストは、実装が間違っていても通るのでは」と感じたことはないでしょうか。

そこで使えるのが、実装へ小さな変更を加え、テストが異常を検知するか調べるミューテーションテストです。この記事では、利用上限の判定を例に、AIが書いたテストの弱点を見つける手順を説明します。

以下は公式資料に基づく説明と導入の提案です。コードは説明用で、この構成でStrykerを実行した検証結果や、実案件での成果...

3 days ago
3

Before Making AI Faster, Measure Where You Wait

AI agents often create a deceptively small delay: ask for a change, wait, review the answer, add context, and wait again. A single pause may be tolerable. Five or ten review loops can break concentration and slow the entire job.

I build AI...

a month ago
1

「Fable 5」は出ない。でも、新しいFableは大きな再出発になりそう

「Fable 5」は出ない。でも、新しい『Fable』はかなり大きな再出発になりそう

「Fable 5」という呼び方で探している人は多いはずです。ただ、2026年7月2日時点での公式タイトルはナンバリングではなく、シンプルに 『Fable』 です。実質的にはシリーズの再始動であり、Xboxの公式ページでも「beloved franchise」のリブートとして紹介されています。

発売日は、公式ページ上では 2027年2月23日。対応プラットフォームは Xbox Seri...

3 months ago
3

Claude Code から Substack に直接記事を投稿する — Substack MCP の作り方・仕組み・使い方

結論を先に置きます

Substack には公開された投稿用 API がありません。なので私が作っちゃいました。

X や note にあるような、サードパーティが投稿を作成・公開できる公式エンドポイントは存在しません。すべての記事公開は、基本的に Substack の Web エディタ経由でしかできません。

Taiyo's Substack をお読みいただきありがとうございます!新しいポストを受け取って私の活動を応援していただくために、無料で購読してください

これ...

4 months ago
58
1

Shipping to Substack from Claude: I Built Substack MCP

The problem

Substack doesn't have a public API.

That's a weird thing to say in 2026. Every other writing platform — Ghost, WordPress, Medium, Notion — exposes some kind of authenticated endpoint. Substack doesn't. If you want to draft a...

5 months ago
4

Key Facts

Contact Information
Newsletter Author
Number of Subscribers
Find out how many people subscribe to this newsletter.

Audience Metrics

Subscribers, engagement, traffic and sponsorship for Taiyo's Substack.

SubscribersEngagement77Monthly Web Visits
Accepts SponsorsEstimated Cost per Ad

Authors

The writers behind this newsletter.

  • Taiyo | サブスタ自動化ツール公開中

    「大阪万博登壇した大学生がサブスタに異世界転生したらClaude Codeで自動投稿の仕組みを作って無双した件」 ▶︎kirigami.appでARR700万 ▶︎100人規模の「AI PLAY GUILD」代表 ▶︎HTML2PPTX MCP展開中。 ▶︎X : フォロワー1.7万人\ud83d\udc47

  • Frequently Asked Questions

    How can I access the email archive for Taiyo's Substack?

    You can find recent issues that have been published by Taiyo's Substack on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.

    How many subscribers does Taiyo's Substack have?

    To see how many people subscribe to Taiyo's Substack, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.

    How can I advertise in Taiyo's Substack?

    Newsletter advertising can be extremely effective when it's done right. Before you pitch Taiyo's Substack as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.

    Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.

    How much does it cost to sponsor a publication like Taiyo's Substack?

    Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.

    To find out how much an ad will cost, contact Taiyo's Substack using the contact information provided and ask for a copy of their media kit.

    How can I find newsletters related to Taiyo's Substack?

    Scroll up to where it says Related Newsletters to see other publications like Taiyo's Substack. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.

    How do I contact Taiyo's Substack?

    Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.