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fix(adapters): ignore empty function_call from streaming deltas #1031

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Merged
dingyi222666 merged 1 commit into from
Aug 28, 2026
Merged

fix(adapters): ignore empty function_call from streaming deltas #1031

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9 changes: 8 additions & 1 deletion packages/shared-adapter/src/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -981,7 +981,14 @@ export function convertDeltaToMessageChunk(
function_call?: any
reasoning_content?: string
} = {}
if (delta.function_call) {
// Some proxies (e.g. DeepSeek V4 relays) emit an empty function_call
// object ({ arguments: '', name: '' }) on the final tool_calls chunk.
// Ignore it so the agent does not see a phantom empty tool call.
if (
delta.function_call &&
((delta.function_call.name?.length ?? 0) > 0 ||
(delta.function_call.arguments?.length ?? 0) > 0)
) {
additionalKwargs.function_call = delta.function_call
}

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