The examples in the docs give 500 Internal Server error
The call to POST /graph/search returns 500 in the API testing console here: https://westus.dev.cognitive.microsoft.com/docs/services/56332331778daf02acc0a50b/operations/57e3569ddbe2d91158fa270e/console.
I've also mentioned this issue here: https://github.com/Microsoft/azure-docs/pull/1964
María Inés Parnisari commented
The API is still broken.
I think the service is very unstable. GraphSearch sometimes works, but I get a lot of 500/503 errors as well... using the same queries.