AWS Security ChangesHomeSearch

AWS bedrock documentation change

Service: bedrock · 2026-06-19 · Documentation low

File: bedrock/latest/userguide/claude-messages-mid-conversation-system.md

Summary

Reworded explanation of mid-conversation system message functionality and added specific use case examples

Security assessment

The changes only improve feature explanation clarity and provide implementation examples. No security vulnerabilities, fixes, or security-specific features are mentioned.

Diff

diff --git a/bedrock/latest/userguide/claude-messages-mid-conversation-system.md b/bedrock/latest/userguide/claude-messages-mid-conversation-system.md
index 59e05bf05..bb84f1ba7 100644
--- a//bedrock/latest/userguide/claude-messages-mid-conversation-system.md
+++ b//bedrock/latest/userguide/claude-messages-mid-conversation-system.md
@@ -11 +11 @@ Supported modelsMessage fieldsPlacement rulesContent rulesPrompt cachingResponse
-You can append `{"role": "system", ...}` messages to the `messages` array to add or update system instructions partway through a conversation without invalidating the cached prefix that came before them.
+You can append `{"role": "system", ...}` messages to the `messages` array. This adds or updates system instructions partway through a conversation without invalidating the cached prefix.
@@ -15 +15 @@ Previously, system instructions could only be supplied through the top-level `sy
-This is useful in agentic workflows where the model needs to adapt as a task progresses, such as introducing a new constraint mid-task, refreshing authoritative context, or changing tool guidance for later turns.
+This is useful in agentic workflows where the model needs to adapt as a task progresses. Examples include introducing a new constraint mid-task, refreshing authoritative context, or changing tool guidance for later turns.