Do you have a specific error message or any information on the external API (e.g. link to documentation)?

Hi, Andrew. No worries, thanks for giving me the opportunity to clarify: URLExecute does work when calling in the cloud notebook, but cloud deployment with URLExecute in the body of APIFunction, such as the one above, fails. I've been trying to replicate the error result I got the first time, but now I'm just getting time out errors; the original error message said it was a configuration connection error. I don't really understand how Wolfram API is interacting with the database API to give you a more detailed answer.

Hi Joel, I don't have the specific error message from the Wolfram Cloud object on hand anymore, but here is some documentation for the external API.

Sure, here is the link to the database for you to try as the first argument for APIFunction (If you need to get to the actual Neo4j frontend, just delete everything after ~7474 in the URL). For the query, try this one as a test:

MATCH (VESSEL)-[:TRIGGERED]->(EVENT)
RETURN (EVENT)
LIMIT 10;

Also, I was able to get the original error message I encountered when I ran it thru my personal cloud account (which is different from the cloud account I was using before). Here it is:

"ERROR The requested URL could not be retrieved \n\n \n \nThe following error was encountered while trying to retrieve the URL: http://ec2-52-91-61-79.compute-1.amazonaws.com:7474/db/data/cypher \nAccess Denied. \nAccess control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect. \nYour cache administrator is urlfetchproxy@wolframcloud.com . \n \n\n \n \nGenerated Wed, 22 Jun 2016 14:50:23 GMT by urlfetchproxy.wolframcloud.com (squid/3.5.9)"