fix(workflows): support chunked card number reading#6448
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…knowledgment Callers naturally read card numbers in groups and expect acknowledgment between them; GetCardNumberTask previously pushed them to read the whole number in one go. Teach the audio instructions grouped capture (brief, digit-free acknowledgments between groups; the agent never utters digits) and have update_card_number concatenate the groups into a single final call. Luhn validation and caller repeat-back confirmation remain the correctness backstop. Fixes AGT-3141 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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theomonnom
approved these changes
Jul 15, 2026
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Callers naturally read card numbers in groups and expect acknowledgment between them ("the first four are 4 5 3 9"); GetCardNumberTask previously pushed them to read the whole number in one utterance (
update_card_numberforbids incremental calls and the instructions had no grouped-capture guidance).Prompt-level fix: the audio instructions now describe group-wise collection with brief, digit-free acknowledgments (the agent never utters digits, per the existing PCI constraint in the base instructions), and the tool docstring instructs concatenating the groups in order into a single call. Verified via
lk agent daemonwith four distinct groups: correct in-order concatenation, Luhn pass, caller repeat-back confirmation, and a mid-flow restart. No stateful chunk-buffer tool needed.Stacked on #6447 (base branch
chenghao/fix/AGT-3139-credit-card-confirm-routing); will retarget to main once that merges.Fixes AGT-3141
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