diff --git a/lib/buildGlossary.js b/lib/buildGlossary.js
new file mode 100644
index 0000000..ef5fc63
--- /dev/null
+++ b/lib/buildGlossary.js
@@ -0,0 +1,59 @@
+const fs = require("fs");
+const path = require("path");
+const matter = require("gray-matter");
+const toml = require("@iarna/toml");
+
+const options = {
+    engines: {
+        toml: toml.parse.bind(toml),
+    },
+    language: "toml",
+    delimiters: "+++",
+};
+
+const glossary = [];
+
+function buildGlossary(dir) {
+    const children = fs.readdirSync(dir, { withFileTypes: true });
+    const pages = children.filter((f) => f.isFile() && f.name !== "_index.md");
+    const subdirs = children.filter(
+        (f) => f.isDirectory()
+    );
+    pages.map((page) => {
+        const { data } = matter(fs.readFileSync(path.join(dir, page.name)), options);
+        const glossaryEntry = data.glossaryEntry
+            ? Object.values(data.glossaryEntry)
+                .map((e) => ({
+                    ...e, ...{
+                        url: "https://developers.urbit.org" + path.join(
+                            dir.substr(dir.indexOf("content") + 7),
+                            "/",
+                            page.name.replace(/.md$/, "")
+                        )
+                    }
+                }))
+            : [];
+        glossaryEntry.forEach((entry) => glossary.push(entry));
+    });
+
+    Object.fromEntries(
+        subdirs.map((subdir) => [
+            subdir.name,
+            buildGlossary(path.join(dir, subdir.name)),
+        ])
+    );
+}
+
+buildGlossary(path.join(process.cwd(), "content"));
+const fileContents = `export const index = ${JSON.stringify(glossary)}`;
+
+try {
+    fs.readdirSync("cache");
+} catch (err) {
+    fs.mkdirSync("cache");
+}
+
+fs.writeFile("cache/glossary.js", fileContents, function (err) {
+    if (err) return console.error(err);
+    console.log("Site glossary created.");
+});
diff --git a/package.json b/package.json
index 444d5e3..83d3f62 100644
--- a/package.json
+++ b/package.json
@@ -4,8 +4,9 @@
   "private": true,
   "scripts": {
     "dev": "npm run prebuild && next dev",
-    "prebuild": "npm run cache-posts && npm run guide && npm run overview && npm run reference",
+    "prebuild": "npm run cache-posts && npm run glossary && npm run guide && npm run overview && npm run reference",
     "cache-posts": "node lib/cache.js",
+    "glossary": "node lib/buildGlossary.js",
     "guide": "node lib/buildPageTree guides weight",
     "overview": "node lib/buildPageTree overview weight",
     "reference": "node lib/buildPageTree reference weight",