Have you looked at this documentation from Meraki yet? https://documentation.meraki.com/MX/Content_Filtering_and_Threat_Protection/Threat_Grid_Integration#:~:text=Threat%20Grid%20and%20Meraki%20MX%20Integration,-The%20AMP%20integration&text=Malicious%20files%20are%20blocked%20while,additional%20static%20and%20dynamic%20analysis.
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