Detect a Tool Call Marker as It Streams In
Beginner
The problem, from first principles
A streaming model often signals a tool call with a special marker embedded in its output (e.g. <tool_call>), but that marker isn't guaranteed to land inside a single chunk -- streaming APIs split text at arbitrary byte or token boundaries, so the marker can easily be cut in half across two consecutive chunks.
The task
Write detect_early_tool_call(chunks, marker) that returns the index of the first chunk after which the accumulated text contains marker, or None if it never appears.
Keywords
production-systemsstreamingreal-time-agents
Python
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