> For the complete documentation index, see [llms.txt](https://doc.opentact.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.opentact.org/opentact-api-documentation/tn-profile/add-blacklist-to-tn-profile/example-api-call.md).

# Example API Call