This is an AT Protocol Personal Data Server (an atproto PDS).

Host:     pds.staging.sharedcomputer.network
DID:      did:web:pds.staging.sharedcomputer.network
Software: atproto-pds 0.15.0-rc.4+711ee2db1a

Most API routes are under /xrpc/
Account portal:  /account
Health:          /xrpc/_health

Protocol: https://atproto.com