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Dev tools · March 12, 2026

RDX

Reactive Document eXpressions: Components as Data, not Code.

What it does

The Big Idea MDX changed the game for documentation, but it has a massive Achilles' heel: Security. Because MDX allows arbitrary JavaScript and import statements, you can’t safely let untrusted users author content. Enter RDX. RDX is a strictly typed, declarative document format built as a superset of CommonMark. It gives you the power of rich, interactive components () with the security of a pure data format. No eval(), no JavaScript runtime, and zero risk of XSS.

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