billflare.

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

D1paithos-d1-migration-writes

A D1 migration burst far past a $10 budget; the author asks for a billing grace.

Community user maxsandrew, a hobbyist on Workers Paid whose previous cycles were under $30, says moving large tables between two D1 databases to stay under the 10 GB limit pushed the bill to 8,274% of a $10 budget alert that he missed; no dollar amount is stated. He says there is no hard per-cycle stop, that batch jobs are now gated and that a support ticket was opened, and asks whether a one-time billing grace is possible.

What happened

Reported cause
Write volume
Incident date
Date not recorded
First reported
2026-09-03
Billing outcome
Not recorded
Case progress
Not established
Public Cloudflare reply
Not linked

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports the migration writes

    Open original source

    The author reports migration writes far past a $10 budget and asks about a one-time billing grace.

Community resourceWorkers +3

Cloudflare Cost Guard: a read-only agent skill for runaway-billing audits

Layer Cache’s open-source agent skill, announced by Domenico (@purposelyblnk), audits a Cloudflare codebase from source alone for paths that can run up uncontrolled billable usage, and reports findings without changing code or calling Cloudflare.

D1

mcwangcn reports $1,300 in D1 charges after a bot attack.

@mcwangcn says D1 writes previously cost over a thousand dollars and separately mentions Workers CPU charges without giving an amount. He later shares a Cloudflare bill and says $1,300 of its $3,600 came from D1 after a bot attack.

Community resourceWorkers +8

Cloudflare Medivh: a self-hosted near-real-time bill estimator

An open-source, self-hosted monitor that adds today’s estimated usage cost to Cloudflare’s daily-updated billable usage, sends summaries, and calls a webhook when the current cycle crosses a budget.