Hi @abcdef12345,
Thanks for the post! I can confirm the APIv1 does support 10 API calls per second per organization, however this limitation is strictly related to the API Call processing and not necessarily the time it would take for an MX to update its configuration.
Are you able to confirm when processing the API command to (1) single hub, that there is no delay experienced? Also if you could confirm the API endpoint you're referencing it would be greatly appreciated!
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