diff --git a/keyserver/src/utils/segmenter.js b/keyserver/src/utils/segmenter.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/utils/segmenter.js
@@ -0,0 +1,52 @@
+// @flow
+
+type SegmenterOptions = {
+  localeMatcher?: 'best fit' | 'lookup',
+  granularity?: 'grapheme' | 'word' | 'sentence',
+};
+
+type ResolvedSegmenterOptions = {
+  locale: string,
+  granularity: 'grapheme' | 'word' | 'sentence',
+};
+
+declare class Segmenter {
+  constructor(
+    locales?: Intl$Locale | Intl$Locale[],
+    options?: SegmenterOptions,
+  ): Segmenter;
+
+  resolvedOptions(): ResolvedSegmenterOptions;
+
+  segment(input: string): Segments;
+}
+
+type SegmentData = {
+  segment: string,
+  index: number,
+  input: string,
+  isWordLike?: boolean,
+};
+
+declare class Segments {
+  containing(codeUnitIndex?: number): SegmentData;
+  @@iterator: () => Iterator<SegmentData>;
+}
+
+type OurIntlType = {
+  +Collator: Class<Intl$Collator>,
+  +DateTimeFormat: Class<Intl$DateTimeFormat>,
+  +NumberFormat: Class<Intl$NumberFormat>,
+  +PluralRules: ?Class<Intl$PluralRules>,
+  +getCanonicalLocales?: (locales?: Intl$Locales) => Intl$Locale[],
+  +Segmenter: Class<Segmenter>,
+};
+
+const OurIntl: OurIntlType = (Intl: any);
+const segmenter = new OurIntl.Segmenter('eng', { granularity: 'word' });
+
+function getSegmenter(): Segmenter {
+  return segmenter;
+}
+
+export { getSegmenter };