Script to update some settings for all zones on a Cloudflare account. Default: disable TLS ECH(Encrypted Client Hello).

cf-update-all-zones-settings.sh

#!/bin/bash

ACCOUNT_EMAIL="$1"
GLOBAL_API_KEY="$2"
OPTION="${3:-ech}"
VALUE="${4:-off}"

if [ -z "${ACCOUNT_EMAIL}" ] || [ -z "${GLOBAL_API_KEY}" ]; then
        echo "Usage: $0 CLOUDFLARE_ACCOUNT_EMAIL CLOUDFLARE_GLOBAL_API_KEY [OPTION] [VALUE]"
        echo
        echo "Set specified setting for all zones for given account"
        echo "By default disable TLS ECH, that can not be done from web UI for free accounts"
        echo "To disable TLS 1.3 use this option: tls_1_3 off"
        echo
        echo "Docs: https://developers.cloudflare.com/api/operations/zone-settings-get-all-zone-settings"
        echo "Get all available zone settings: GET https://api.cloudflare.com/client/v4/zones/ID_ZONE/settings"
        exit 1
fi

type curl && type jq || exit 1

# https://developers.cloudflare.com/api/operations/zones-get
zones=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?per_page=50" \
     -H "X-Auth-Email: ${ACCOUNT_EMAIL}" \
     -H "X-Auth-Key: ${GLOBAL_API_KEY}")

num_pages=$(echo "$zones" | jq --exit-status -r ".result_info.total_pages") || { echo "Something went wrong"; exit 1; }

for page in $(seq 1 $num_pages); do
        curl -s -X GET "https://api.cloudflare.com/client/v4/zones?per_page=50&page=$page" \
        -H "X-Auth-Email: ${ACCOUNT_EMAIL}" \
        -H "X-Auth-Key: ${GLOBAL_API_KEY}" \
        | jq '.result' | jq '.[]' | jq -c '[.id,.name]' \
        | while read -r i; do
                ID_ZONE=$(echo "$i" | jq -r '.[0]')
                NAME_ZONE=$(echo "$i" | jq -r '.[1]')

                echo "Zone id: ${ID_ZONE}"
                echo "Name: ${NAME_ZONE}"
                echo "Changing ${OPTION} to ${VALUE} ..."

                curl -s -X PATCH "https://api.cloudflare.com/client/v4/zones/${ID_ZONE}/settings/${OPTION}" \
                -H "X-Auth-Email: ${ACCOUNT_EMAIL}" \
                -H "X-Auth-Key: ${GLOBAL_API_KEY}" \
                -H "Content-Type:application/json" --data "{\"id\":\"${OPTION}\",\"value\":\"${VALUE}\"}" | jq
        done
done

simple for specify zoneid

Windows: https://gist.github.com/FazziCLAY/38f56ab423a0e0a2f864985cf3ce21be
Linux: https://gist.github.com/FazziCLAY/75f72acc8b728530a637121fdee4dfb5