Need Help with Warm Transfer Summary in VAPI

Hi, I recently switched from Retell to VAPI and I'm really enjoying the experience so far—great tool!

However, I ran into an issue with the warm transfer feature. In Retell, when I did a warm transfer, the new destination would receive a short 3–7 second summary of the call (including caller name, reason for the call, etc.). This was super helpful for context.

I noticed VAPI has a "warm transfer with summary" option as well, but it doesn’t seem to be working for me. The transfer happens, but there’s no summary played for the recipient.

Am I missing something in the setup? Would really appreciate any guidance or suggestions!

Thanks in advance!
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