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## 5.67.1

**`(fix):`** Fix `--version AUTO` leaking the literal "AUTO" string into self-hosted generated
SDKs. Both the IR version field (which drives the User-Agent header and
X-Fern-SDK-Version) and the IR publishing config (which drives package.json and
version.ts) now use the language-mapped magic version placeholder
("0.0.0-fern-placeholder") instead of the raw "AUTO" version, so these fields are
stamped with the computed version after post-generation replacement rather than "AUTO".

## 5.67.0

**`(feat):`** Custom MDX components (`experimental.mdx-components`) can now import third-party
libraries. The CLI bundles component files with rolldown (via npx) at docs build
time, inlining dependencies resolved from the docs project's node\_modules.

## 5.66.1

**`(fix):`** Validate that a docs instance's `url` and `custom-domain` share the same basepath for all
sites, not just basepath-aware ones. Navigation links and redirects are generated relative to
the basepath, so the CLI now fails with a clear error when they differ.