LiteLLM 1.108.3 LTS repairs Bedrock routing, MCP limits and guardrail duplication
LiteLLM 1.108.3 is a signed LTS release that repairs Bedrock requests when api_base is an empty string, allows MCP tool results larger than 1 MiB through the SSE path and prevents duplicate model-level post-call guardrail moderation. It follows the 1.108.2 credential and transcript-redaction fixes on the same retained release line.
Why it matters: These fixes sit on three production boundaries: where a Bedrock request is sent, whether a large tool result can complete and whether a moderation policy executes once or twice. Each can change reliability, cost or enforcement without changing application…