diff --git a/docs/AVAILABILITY_HISTORY_CONTRACT.md b/docs/AVAILABILITY_HISTORY_CONTRACT.md
index 31b95afa9e..b38e2df880 100644
--- a/docs/AVAILABILITY_HISTORY_CONTRACT.md
+++ b/docs/AVAILABILITY_HISTORY_CONTRACT.md
@@ -138,8 +138,9 @@ semantics and would lose the observation contract.
 Raw observations roll up into buckets that retain, at minimum, state durations,
 observation counts by outcome, unknown duration, and reachable-latency
 count/sum/min/max. Rollups must preserve totals across raw -> minute -> hourly
--> daily transitions. The existing history access limits apply: Community 7
-days, Relay 14 days, and Pro/eligible legacy plans 90 days. This capability
+-> daily transitions. The runtime's active `max_history_days` entitlement
+controls history access; do not hard-code a separate availability-history tier
+list. This capability
 does not introduce a new entitlement. Assigned execution continues to require
 the existing `external_probe` entitlement.