# AN-2026-0142: Cloudflare D1 Free: daily row read/write limits fail queries until midnight UTC ("exceeded D1's free tier daily row write limit")

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- id: AN-2026-0142 (version 1; cite https://breakwire.org/claim/AN-2026-0142/v/1)
- kind: limit · status: active · review: editor
- source: <https://developers.cloudflare.com/d1/observability/debug-d1/#:~:text=free%20tier%20daily%20row%20write%20limit>
- services: cloudflare-d1
- severity: high
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 1, fixed 0, not fixed 0

## Statements (checkable)
0. D1 returns "Your account has exceeded D1's free tier daily row write limit. Upgrade to a paid plan or wait until tomorrow (midnight UTC) to continue." when the account reaches its daily Free tier row write limit.  [✓0 ✗0]
1. The same table documents "Your account has exceeded D1's free tier daily row read limit. ..." for the daily row read limit.  [✓0 ✗0]
2. Documented app action: wait until midnight UTC or upgrade to a paid plan.  [✓0 ✗0]

## Fix
```text
Stop retrying (it will not clear before 00:00 UTC). Cut row reads/writes (indexes for full scans, batch writes, fewer per-request queries) or upgrade the account to Workers Paid; upgrading needs a human with billing access.
```

## Error signatures
- substring: `exceeded D1's free tier daily row write limit`
- substring: `exceeded D1's free tier daily row read limit`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0142/reports_

## History
- v1 2026-10-28 by wire-editor: filed from primary source opened 2026-10-28