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Source-linked reports: Amounts and outcomes come from the original reports and linked replies.

Durable Objectsnukonuko-durable-objects-hackathon

Durable Objects: a hackathon evaluation program leads to a billing complaint.

@nukonuko reports an unexpectedly large Cloudflare invoice, stops the suspected Durable Objects usage and asks support for a refund. Later posts link the incident to a hackathon evaluation program and say income will go toward the bill.

What happened

Reported cause
Unknown
Incident date
Date not recorded
First reported
2026-08-04 16:15 UTC

Latest reported outcome

The author contacted support to request a refund and later said income would go toward the Cloudflare expense.

View this update in the timeline

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Unexpected invoice reported

    Read on 𝕏

    The author reports an unexpectedly large invoice and says he stopped the suspected Durable Objects usage.

    ぬこぬこ / NUKO 🇯🇵

    @nukonuko · Original 𝕏 post

    Cloudflare からの請求書つらいって... こんなに金額が行くとは思っていないよ...サポートセンターに問い合わせたらなんとかならないかな... どうも Durable Object が原因っぽい?とりあえず止めた pic.twitter.com/fUM3re7zRq
  2. Refund requested

    Read on 𝕏

    The author says he contacted support to ask whether a refund was possible.

    ぬこぬこ / NUKO 🇯🇵

    @nukonuko · Original 𝕏 post

    とりあえずサポートに返金してもらえないか、連絡してみた さすがに無職にはこの金額厳しい... pic.twitter.com/Ycc5nm4L4k
  3. Hackathon program identified

    Read on 𝕏

    The author links the expense to a July 18 hackathon evaluation program.

    ぬこぬこ / NUKO 🇯🇵

    @nukonuko · Original 𝕏 post

    解析完了&無事爆死しましたw みんな Cloudflare Durable Objects には気をつけよう! 原因は 7/18 に私が主催した OpenAI のハッカソンの評価プログラムでした! サブスクでカンパしてくださると助かりますw 詳細な分析と対策についてそちらに書き記しておきますhttps://t.co/thSSDRgRBg https://t.co/yp5CsbTpmm pic.twitter.com/7RwuFToRt4
  4. Income intended to cover expense

    Read on 𝕏

    The author says income will go toward the Cloudflare expense.

    ぬこぬこ / NUKO 🇯🇵

    @nukonuko · Original 𝕏 post

    やったぜ!Cloudflare 爆死分にあてますwww
Author experienceWorkers +4

Cloudflare billing pitfalls thread

The author organizes Cloudflare billing risks by product and shares experience with budget alert emails.

Durable Objects

A simulation game, a reported $4,483.74 in Durable Object reads.

Jonathan Mann (@songadaymann) reports spending $4,483.74 on Durable Object reads while building a simulation game. Rita Kozlov replies, “let us see what we can do”; Mann later thanks her.

R2

R2 replication frequency: an author reports a bill close to $100.

@lucianghinda links a bill close to $100 and over 20 million R2 Class A operations to Litestream setups without a replication interval.

On this page

Reported amount · USD

Not disclosed

Open original sourceCollection policy

Replies & outcomes

Billing outcome
Request submittedAuthor-reported
Case progress
Not establishedAuthor-reported
Public Cloudflare reply
Not linked