Particle Health API

Create a service account in Particle's Management API or ask your Particle representative to generate one for you. The docs say Particle uses OAuth 2 client-credentials for server-to-server calls and that you can create a service account yourself via the Management API service account endpoints; the guide also says you can contact your Particle representative from Auth & Keys. Once created, use the issued client_id and client_secret to request an access token from the Authentication endpoint.