Download Venmo Transactions as CSV

venmo_csv.txt

Prerequisite
JQ: brew install jq
Chrome/Safari Inspector

Log in and open https://venmo.com/#yours
Open Chrome/Safari Inspector
Go to Network Tab and filter for 'feed'
Right click and Save "feed" as "venmo_feed.json"
Run in Terminal: 
cat venmo_feed.json | jq '.data[] | {actor: .actor.name, target: .transactions[0].target.name, type: .type, message: .message, date: .created_time, amount: .transactions[0].amount}' | jq -s -r '(map(keys) | add | unique) as $cols | map(. as $row | $cols | map($row[.])) as $rows | $cols, $rows[] | @csv' > venmo_feed.csv