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AWS inspector: Clarify Inspector cost metering for machine image scans

Service: inspector · 2026-10-07 · Documentation low

File: inspector/latest/user/usage.md

Summary

Adds billing/cost documentation describing how on-demand machine image scans and rescans are metered, including that failed on-demand scans are not metered and that the free trial does not apply to on-demand machine image scans.

Security assessment

The changed lines are purely pricing/metering text for the Usage page; they mention scans but describe cost calculation, not any security control, vulnerability, or finding.

Evidence

+    * Machine image scanning: cost reflects the sum of the number of initial machine image scans + machine image rescans in the last 30 days. This includes on-demand machine image scans that completed successfully. Amazon Inspector doesn't meter an on-demand scan that fails. For more information, see [Running on-demand machine image scans with Amazon Inspector](./machine-image-on-demand.html).

Diff

diff --git a/inspector/latest/user/usage.md b/inspector/latest/user/usage.md
index 9cd6c8f..b4fedfb 100644
--- a//inspector/latest/user/usage.md
+++ b//inspector/latest/user/usage.md
@@ -128,0 +129,2 @@ Note the following about how Amazon Inspector calculates cost on the **Usage** p
+    * Machine image scanning: cost reflects the sum of the number of initial machine image scans + machine image rescans in the last 30 days. This includes on-demand machine image scans that completed successfully. Amazon Inspector doesn't meter an on-demand scan that fails. For more information, see [Running on-demand machine image scans with Amazon Inspector](./machine-image-on-demand.html).
+
@@ -145,0 +148,4 @@ The free trial does not apply to [CIS scanning](https://docs.aws.amazon.com/insp
+###### Note
+
+The free trial does not apply to [Running on-demand machine image scans with Amazon Inspector](./machine-image-on-demand.html). Amazon Inspector meters on-demand machine image scans from your first scan, whether or not you activated Amazon Inspector for the account. 
+