Regarding authentication for Service MCP in Pega 26, does it support only the OAuth 2.0 Authorization Code grant type, or are other OAuth 2.0 grant types, such as Client Credentials, also supported?

Client Credentials are supported. I’ve built this demo with Client Credentials. Pega Infinity™ ’26 MCP Server and Pega 25.1.3 MCP Connect

Thanks for your reply. I went through the documentation, but my scenario is slightly different. It involves an external agent consuming the Service MCP exposed by Pega, rather than communication between two Pega applications or instances. I tested this using GitHub Copilot in VS Code and a few othe…

Yes, Pega supports both Client Credentials and Authorization Code grant types. My earlier response was specifically addressing your question about Client Credentials support. For external MCP clients such as GitHub Copilot, Claude, and similar tools, the determining factor is often which OAuth flows…

I have experienced , as @RameshSangili mentioned, it depends on the client calling the service.

Service MCP Authentication in Pega 26

RameshSangili (Ramesh Sangili) August 1, 2026, 6:44pm 2

Client Credentials are supported. I’ve built this demo with Client Credentials.

Pega Infinity™ ’26 MCP Server and Pega 25.1.3 MCP Connect

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Service MCP Authentication in Pega 26

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