
next-mdx-remote-client: Why Your MDX Attributes Vanished
The attribute is not undefined — it is deleted from the tree before compilation. What changed in v6, why the repo is archived, and the three ways out.
Aug 1111 min read
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The attribute is not undefined — it is deleted from the tree before compilation. What changed in v6, why the repo is archived, and the three ways out.

Your Next.js project already contains the code the MCP server wants. Importing it fails with an error about Client Components — and the fix is one CLI flag.

Next.js gives you the sitemap, the metadata and the schema. What it does not give you is a warning when your anchors, your lastModified or your internal links quietly break.

The workflow, the CLAUDE.md rules that prevent silent failures, and a real build error this exact setup hit and fixed.