This issue is happening only when the engine is set to 'agnes' and the summary_type is 'takeaway'.
Also confirmed on Postman.
curl --location 'https://kagi.com/api/v0/summarize' \
--header 'Authorization: Bot INSERT-KEY-HERE' \
--header 'Content-Type: application/json' \
--data '{
"url": "https://www.nytimes.com/2023/05/18/magazine/somatic-therapy.html",
"summary_type": "takeaway",
"engine": "agnes"
}'
