Fetching Instagram Metadata
The Instagram official API only allows to retrieve your own content from the API.
What you can do is to embed the Instagram post into your web page similar to how Mention does it in its Web Application. Use the original_url
field to retrieve the short code for the post ID.
With this ID you can embed the post with the following code:
<iframe src="https://www.instagram.com/p/{POST_ID}/embed/captioned" width="440" height="859"></iframe>