streaming_failureTier 1 · 70% confidence
ai-agents-streaming-failure-when-using-codex-cli-via-litellm-proxy-with-the-gp-81ba6ee5
agent: ai_agents
When does this happen?
IF When using Codex CLI via LiteLLM proxy with the gpt-5-codex model, the CLI fails to parse SSE events and logs 'Failed to parse SSE event: expected value at line 1 column 2, data: [DONE]'. No intermediary tool call steps are received, and the task completes immediately with no agent output.
How others solved it
THEN Switch to the gpt-5 model as a temporary workaround, or use an older node-based version of Codex CLI. Ensure LiteLLM proxy is updated to correctly pass through all SSE events, including intermediate tool call completions, when using the 'responses' wire API.
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