What is the minimum implementation required to be considered to be STAC API compliant?

[philvarner]

What is the minimum implementation required to be considered to be STAC API compliant? We don't state explicitly one way or the other. For example, implementing /search is optional.

[m-mohr]

IMHO you should either implement OAFeat and return STAC compliant responses or have / and /search implemented.

[matthewhanson]

Agree it should implement OAFeat and meet all those requirements.
Then root catalog, collections, and items should all return valid STAC metadata.

Where should we add this?

[m-mohr]

This has been pretty much answered by #60 - you need to implement the landing page, all other is optional and you can figure out what is supported by the conformance classes published on the landing page.