From 2832834367fec55b817774d475443faa1c02a597 Mon Sep 17 00:00:00 2001
From: lorenzejay <lorenzejaytech@gmail.com>
Date: Thu, 26 Mar 2026 15:40:27 -0700
Subject: [PATCH] feat: enhance system message handling with prompt caching in
 AnthropicCompletion

---
 .../crewai/llms/providers/anthropic/completion.py  | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/crewai/src/crewai/llms/providers/anthropic/completion.py b/lib/crewai/src/crewai/llms/providers/anthropic/completion.py
index 077c31589..32b6b53bd 100644
--- a/lib/crewai/src/crewai/llms/providers/anthropic/completion.py
+++ b/lib/crewai/src/crewai/llms/providers/anthropic/completion.py
@@ -469,9 +469,15 @@ class AnthropicCompletion(BaseLLM):
             "stream": self.stream,
         }
 
-        # Add system message if present
+        # Add system message if present, with prompt caching
         if system_message:
-            params["system"] = system_message
+            params["system"] = [
+                {
+                    "type": "text",
+                    "text": system_message,
+                    "cache_control": {"type": "ephemeral"},
+                }
+            ]
 
         # Add optional parameters if set
         if self.temperature is not None:
@@ -497,6 +503,10 @@ class AnthropicCompletion(BaseLLM):
             if self.tool_search is not None and len(regular_tools) >= 2:
                 converted_tools = self._apply_tool_search(converted_tools)
 
+
+            if converted_tools:
+                converted_tools[-1]["cache_control"] = {"type": "ephemeral"}
+
             params["tools"] = converted_tools
 
             if available_functions and len(regular_tools) == 1: