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 invoking a bunch of CLI commands! It's meant to be used both as a
 serialization format and a configuration language, much like JSON, YAML, or
 XML.</p>
-<p>There's a living
-<a href="https://github.com/kdl-org/kdl/blob/main/SPEC.md">specification</a>, as well as
-various <a href="#implementations">implementations</a>. You can also check out the
-<a href="#faq">FAQ</a> to answer all your burning questions!</p>
+<p>There's a living <a href="https://github.com/kdl-org/kdl/blob/main/SPEC.md">specification</a>, as well as various
+<a href="#implementations">implementations</a>. You can also check out the <a href="#faq">FAQ</a> to
+answer all your burning questions!</p>
+<p>In addition to a spec for KDL itself, there are also standard specs for <a href="https://github.com/kdl-org/kdl/blob/main/QUERY-SPEC.md">a KDL
+Query Language</a> based
+on CSS selectors, and <a href="https://github.com/kdl-org/kdl/blob/main/SCHEMA-SPEC.md">a KDL Schema
+Language</a> loosely
+based on JSON Schema.</p>
 <p>The language is based on <a href="https://sdlang.org">SDLang</a>, with a number of
 modifications and clarifications on its syntax and behavior.</p>
 </section>