Unfortunately, Snowflake does not provide a direct feature to view the raw HTTP/cURL requests for general API usage, as this level of access is typically restricted and not available through standard administrative tooling.

The REST API history table in Snowflake does indeed seem to be limited to SCIM (System for Cross-domain Identity Management) endpoints and does not cover OAuth authorizations or token requests by custom clients or integrations

Given this, you might want to focus on the logs or trace features provided by the third-party tool itself. Often, third-party tools have logging options that can be enabled to view the raw requests they send. Additionally, using network sniffing tools (such as Wireshark) on the server where the requests are made could help capture these requests' raw data.