Support Microsoft 365 Copilot Retrieval API

[isc-tleavitt]

See: https://learn.microsoft.com/en-us/microsoft-365-copilot/extensibility/api/ai-services/retrieval/copilotroot-retrieval?pivots=graph-v1

This would be extremely useful for semantic search vs. search-query which is very keyword sensitive.

[eirikb]

Interesting. Perhaps they are using ms-365-mcp-server on their end, and we go full circle.
I'll look into adding this endpoint 🙂

[isc-tleavitt]

@eirikb thanks for the quick response! Would you want a PR for this or prefer to just take it on yourself?

[eirikb]

Same for me, if you make a PR then that's fine. In theory I guess it should be enough to map it up in endpoints.json - at least until it's not

[isc-tleavitt]

This has ended up being trickier than expected.

https://raw.githubusercontent.com/microsoftgraph/msgraph-metadata/refs/heads/master/openapi/v1.0/openapi.yaml has the endpoint as deprecated (which I think is a lie, I can't find any other sources on this) so needed to update the generation process too, and the inputSchema is wrong for some reason (with an enclosing "body" key).

Put my work up in a branch but won't have bandwidth to get back to this until later next week most likely.

[eirikb]

This has ended up being trickier than expected.

https://raw.githubusercontent.com/microsoftgraph/msgraph-metadata/refs/heads/master/openapi/v1.0/openapi.yaml has the endpoint as deprecated (which I think is a lie, I can't find any other sources on this) so needed to update the generation process too, and the inputSchema is wrong for some reason (with an enclosing "body" key).

Put my work up in a branch but won't have bandwidth to get back to this until later next week most likely.

We could add whole overrides. Either in code or in other form, perhaps even in endpoints.json.
I mean an override that matches how the endpoint actually works.