From ebe192168c122adf696c3def3cdb83aa7df38f3a Mon Sep 17 00:00:00 2001
From: Cole Crawford <cole.crawford@reifyhealth.com>
Date: Fri, 4 Sep 2026 18:31:53 -0400
Subject: [PATCH] fix(llmobs): read the text of Bedrock Converse guardContent
 blocks

A guardContent block scopes a Bedrock guardrail to part of a Converse turn, usually the user question. The LLM Observability walker treated it as an unsupported block and recorded a placeholder, so the llm span kept the surrounding context and lost the question. Read guardContent.text.text like a plain text block. Input-only block, so response and stream extraction are unchanged.

Fixes #10172
---
 .../src/services/bedrockruntime/utils.js            |  2 ++
 .../test/bedrockruntime.util.spec.js                | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/packages/datadog-plugin-aws-sdk/src/services/bedrockruntime/utils.js b/packages/datadog-plugin-aws-sdk/src/services/bedrockruntime/utils.js
index cdbec6e0b6c..1becf101ca2 100644
--- a/packages/datadog-plugin-aws-sdk/src/services/bedrockruntime/utils.js
+++ b/packages/datadog-plugin-aws-sdk/src/services/bedrockruntime/utils.js
@@ -500,6 +500,8 @@ function extractMessagesFromConverseContent (role, contentBlocks) {
       if (block == null || typeof block !== 'object') continue
       if (typeof block.text === 'string') {
         content += block.text
+      } else if (typeof block.guardContent?.text?.text === 'string') {
+        content += block.guardContent.text.text
       } else if (block.toolUse) {
         toolCalls.push(buildToolCall(block.toolUse))
       } else if (block.toolResult) {
diff --git a/packages/datadog-plugin-aws-sdk/test/bedrockruntime.util.spec.js b/packages/datadog-plugin-aws-sdk/test/bedrockruntime.util.spec.js
index 77a58d9ca15..77a7f7dbe07 100644
--- a/packages/datadog-plugin-aws-sdk/test/bedrockruntime.util.spec.js
+++ b/packages/datadog-plugin-aws-sdk/test/bedrockruntime.util.spec.js
@@ -73,6 +73,19 @@ describe('bedrockruntime utils', () => {
     })
   })
 
+  it('reads the text of Converse guardContent blocks', () => {
+    const message = extractMessagesFromConverseContent('user', [
+      { text: 'Context: ' },
+      { guardContent: { text: { text: 'What is the dose?', qualifiers: ['guard_content'] } } },
+      { text: ' Cite sources.' },
+    ])
+
+    assert.deepStrictEqual(message, {
+      role: 'user',
+      content: 'Context: What is the dose? Cite sources.',
+    })
+  })
+
   describe('converse stream extractor', () => {
     it('returns an empty message when the stream fails before yielding a chunk', () => {
       const generation = extractTextAndResponseReasonConverseFromStream()