post
https://www.virustotal.com/api/v3/collections//
IoC scanning and dataset inclusionAny IoC submitted or queried via the API will be scanned and added to the VirusTotal dataset, making it accessible to the community. Do not submit or query indicators containing sensitive, confidential, or personally identifiable information (PII).
As explained in /collections, for the urls relationship you either use {"type": "url", "url": <a URL string>} or {"type": "url", "id": <a sha256 URL identifier>} as object descriptors.
