There appears to be a server-side problem with the insights/keywords/search API.
The documentation example returns a 500 error:
twurl -H ads-api.twitter.com "/1/insights/keywords/search?granularity=DAY&start_time=2015-11-16T07:59:00Z&end_time=2015-11-17T07:59:00Z&keywords=funny,cool&negative_keywords=sad"
{
"errors": [
{
"code": "INTERNAL_ERROR",
"message": "Internal Error"
}
],
"request": {
"params": {}
}
}
Thanks for your help,
Ryan