We need a way to set traceId or RequestId on all requests.

[lesv]

It would be nice to know what request generated this API call. (RequestID) -- this s.b. for Cloud Trace

[lesv]

StackDriver Trace needs this -- @rakyll is interested in this as well.

[garrettjonesgoogle]

@lesv is this still needed, or is it being done at a lower level?

[lesv]

The claim was that we'll get this for free in our runtimes. (Std / Flex) Using gRPC interceptors. I don't know that it's really true for GAE Std.