I am with you on the challenges with fine grain authorization needs, to me that part is real hard. In a theoretical world the IDP would know all the roles and permissions available for the different authorization servers (downstream services). However centralizing something like this would require some adoption of how permissions are managed by different resource servers, that is a different battle.
What this gives your employer is the allow list of AI agents that you can use (the ones that can use your employer's IDP to access downstream MCP servers) and filters out all the MCP servers that do not implement this protocol. Essentially the threshold to use any AI agent or any MCP server would be a lot higher.
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I am with you on the challenges with fine grain authorization needs, to me that part is real hard. In a theoretical world the IDP would know all the roles and permissions available for the different authorization servers (downstream services). However centralizing something like this would require some adoption of how permissions are managed by different resource servers, that is a different battle.
What this gives your employer is the allow list of AI agents that you can use (the ones that can use your employer's IDP to access downstream MCP servers) and filters out all the MCP servers that do not implement this protocol. Essentially the threshold to use any AI agent or any MCP server would be a lot higher.