diff --git a/scripts/check_curated_doc_vocabulary.jl b/scripts/check_curated_doc_vocabulary.jl
new file mode 100644
index 0000000..4a2f83e
--- /dev/null
+++ b/scripts/check_curated_doc_vocabulary.jl
@@ -0,0 +1,28 @@
+#!/usr/bin/env julia
+# Fail if obsolete API strings appear in curated website Markdown.
+# Run from repository root:
+#   julia --project=. scripts/check_curated_doc_vocabulary.jl
+
+const ROOT = dirname(@__DIR__)
+const NEEDLES = ["register_fields!", "count_field_dofs"]
+# User-facing guides only: developer pages (for example `dof-manager-guide.md`)
+# may mention removed APIs when contrasting with `DOFHandler`.
+const SCAN_DIRS = [joinpath(ROOT, "juliafem.github.io", "docs", "user-guide")]
+
+for dir in SCAN_DIRS
+    isdir(dir) || error("Missing directory: ", dir)
+    for (root, _, files) in walkdir(dir)
+        for fn in files
+            endswith(fn, ".md") || continue
+            path = joinpath(root, fn)
+            text = read(path, String)
+            for needle in NEEDLES
+                if occursin(needle, text)
+                    rel = relpath(path, ROOT)
+                    error("Curated doc vocabulary: found $(repr(needle)) in ", rel)
+                end
+            end
+        end
+    end
+end
+println("check_curated_doc_vocabulary.jl: OK")