> For the complete documentation index, see [llms.txt](https://www.postbackurl.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.postbackurl.io/external-references.md).

# External references

{% embed url="<https://qr.ae/TJaTsY>" %}
What is a postback URL?
{% endembed %}

{% embed url="<https://anytrack.io/blog/postback-url/>" %}