Problemsby GlyphTrouble with vLLM drops
2 posts from 2 people2d activeSteady, +1 this weekunverified
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The posts behind it
[Bug]: xLAM non-streaming tool parser drops single tool call object in <tool_call> tags
### Describe the bug In `xLAMToolParser.extract_tool_calls`, the JSON extracted by `preprocess_model_output` is strictly required to be a list: However, when a model produces a single tool call enclosed in ` ` XML tags: The streaming parser (`extract_tool_calls_streaming`)...
[Bug]: tool_choice="required"` streaming drops tool calls when one delta completes more than one call
### Your current environment The output of python collect_env.py ### 🐛 Describe the bug With `tool_choice="required"` the model writes a JSON array of tool calls, and the serving layer streams it through `extract_required_tool_call_streaming` (`vllm/tool_parsers/streaming.py`)....
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About this problem
Evidence
2 posts from 2 people in 1 place, about 1 a week over 31 days. Mostly on vllm-project/vllm.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts about vLLM with no known issue, sharing the word "drops". First post Oct 7, 2026, latest Nov 6, 2026. Unverified: fewer than 3 posts, or one person or place only. Method
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