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fix(logging): handle Anthropic system prompt as list of content blocks (#36402)

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This commit is contained in:
Lavya Tandel 2026-08-10 23:40:38 +05:30
parent 254c2f6b3b
commit 2f52377777
1 changed files with 10 additions and 7 deletions
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17
litellm/litellm_core_utils/litellm_logging.py
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@ -5702,22 +5702,25 @@ class StandardLoggingPayloadSetup:
@staticmethod
def append_system_prompt_messages(kwargs: dict | None = None, messages: Any | None = None):
"""
Append system prompt messages to the messages
Append system prompt messages to the messages.
Handles both string and list-of-content-blocks forms of `system`.
"""
if kwargs is not None:
if kwargs.get("system") is not None and isinstance(kwargs.get("system"), str):
system = kwargs.get("system")
if system is not None:
if messages is None:
return [{"role": "system", "content": kwargs.get("system")}]
return [{"role": "system", "content": system}]
elif isinstance(messages, list):
if len(messages) == 0:
return [{"role": "system", "content": kwargs.get("system")}]
return [{"role": "system", "content": system}]
# check for duplicates
if messages[0].get("role") == "system" and messages[0].get("content") == kwargs.get("system"):
if messages[0].get("role") == "system" and messages[0].get("content") == system:
return messages
messages = [{"role": "system", "content": kwargs.get("system")}] + messages
messages = [{"role": "system", "content": system}] + messages
elif isinstance(messages, str):
messages = [
{"role": "system", "content": kwargs.get("system")},
{"role": "system", "content": system},
{"role": "user", "content": messages},
]
return messages