Source-linked reports: Amounts and outcomes come from the original reports and linked replies.
An unexpected D1 read charge grew from $176.37 to $195.85 within the billing period.
Community user akelmithat1 reports an unexpected one-time D1 charge of $176.37 in the July 20 to August 20, 2026 period from a small test-only collector project and asks for a one-time courtesy credit. The same day they update that billable D1 rows read kept backfilling to $195.85 (195.85 billion billable rows) although the Worker showed no invocations, and ask for the adjustment to apply to the final amount.
What happened
- Reported cause
- Read volume
- Incident date
- Date not recorded
- First reported
- 2026-08-03
- Billing outcome
- Request submittedAuthor-reported
- Case progress
- Not established
- Public Cloudflare reply
- Not linked
Latest reported outcome
The author asks for a one-time courtesy credit through a support case and for it to apply to the final settled amount.
View this update in the timelineOriginal sources
Each entry links to the report or reply it describes.
Case timeline
Author reports $176.37
Open original sourceThe author reports an unexpected D1 rows-read charge of $176.37 and asks for a review.
Amount updated to $195.85
Open original sourceThe author says the charge has grown to $195.85; this replaces the earlier figure.
More to read
After a $10,000 loop bill: budget alerts and a cost-audit prompt for vibe-coded projects
铁柱AGI (@cgnot996) writes an X article that walks through creating a Cloudflare budget alert, explains why it is only a notice, lists cost-amplifying code patterns, and gives a read-only audit prompt and steps for when a bill has already spiked.
Lion Brain: a Durable Object alarm loop from an AI-coding bug wrote about 250 million rows, roughly $210.
Replying in another user's Community thread, bennygoldstein says a bug written by an AI coding tool made a Durable Object alarm in their Lion Brain app re-index the same data every few seconds on October 10 and 11, 2026, writing about 250 million rows and costing roughly $210 in overage on Workers Paid. He says he only found out from the budget alert email, which never pauses anything, and that he opened a billing case asking for a one-time courtesy credit and a real hard spending cap.
Cloudflare billing pitfalls thread
The author organizes Cloudflare billing risks by product and shares experience with budget alert emails.