diff --git a/docgen/toc.ts b/docgen/toc.ts
new file mode 100644
index 000000000..d552a9cba
--- /dev/null
+++ b/docgen/toc.ts
@@ -0,0 +1,124 @@
+/**
+ * @license
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Forked of https://github.com/firebase/firebase-js-sdk/blob/5ce06766303b92fea969c58172a7c1ab8695e21e/repo-scripts/api-documenter/src/toc.ts.
+ */
+import { writeFileSync } from 'fs';
+import { resolve } from 'path';
+
+import yargs from 'yargs';
+import * as yaml from 'js-yaml';
+import { FileSystem } from '@rushstack/node-core-library';
+
+export interface TocGenerationOptions {
+  inputFolder: string;
+  outputFolder: string;
+  g3Path: string;
+}
+
+interface TocItem {
+  title: string;
+  path: string;
+  section?: TocItem[];
+  status?: 'experimental';
+}
+
+function fileExt(f: string) {
+  const parts = f.split('.');
+  if (parts.length < 2) {
+    return '';
+  }
+  return parts.pop();
+}
+
+export function generateToc({
+  inputFolder,
+  g3Path,
+  outputFolder,
+}: TocGenerationOptions) {
+  const asObj = FileSystem.readFolder(inputFolder)
+    .filter((f) => fileExt(f) === 'md')
+    .reduce((acc, f) => {
+      const parts = f.split('.');
+      parts.pop(); // Get rid of file extenion (.md)
+
+      let cursor = acc;
+      for (const p of parts) {
+        cursor[p] = cursor[p] || {};
+        cursor = cursor[p];
+      }
+      return acc;
+    }, {} as any);
+
+  function toToc(obj, prefix = ''): TocItem[] {
+    const toc: TocItem[] = [];
+    for (const key of Object.keys(obj)) {
+      const path = prefix?.length ? `${prefix}.${key}` : key;
+      const section = toToc(obj[key], path);
+      const tic: TocItem = {
+        title: key,
+        path: `${g3Path}/${path}.md`,
+      };
+      if (section.length > 0) {
+        tic.section = section;
+      }
+      toc.push(tic);
+    }
+    return toc;
+  }
+
+  const toc: TocItem[] = [
+    {
+      title: 'firebase-functions',
+      status: 'experimental',
+      path: `${g3Path}/firebase-functions.md`,
+    },
+    ...toToc(asObj['firebase-functions'], 'firebase-functions'),
+  ];
+
+  writeFileSync(
+    resolve(outputFolder, 'toc.yaml'),
+    yaml.dump(
+      { toc },
+      {
+        quotingType: '"',
+      }
+    )
+  );
+}
+
+const { input, output, path } = yargs(process.argv.slice(2))
+  .option('input', {
+    alias: 'i',
+    describe: 'input folder containing the *.api.json files to be processed.',
+    default: './input',
+  })
+  .option('output', {
+    alias: 'o',
+    describe: 'destination for the generated toc content.',
+    default: './toc',
+  })
+  .option('path', {
+    alias: 'p',
+    describe: 'specifies the path where the reference docs resides (e.g. g3)',
+    default: '/',
+  })
+  .help().argv;
+
+FileSystem.ensureFolder(output);
+generateToc({ inputFolder: input, g3Path: path, outputFolder: output });
diff --git a/package.json b/package.json
index 0b2911c92..aca2baeba 100644
--- a/package.json
+++ b/package.json
@@ -161,7 +161,8 @@
     "docgen:v1:gen": "api-documenter-fire markdown -i docgen/v1 -o docgen/v1/markdown && api-documenter-fire toc -i docgen/v1 -o docgen/v1/markdown/toc -p /docs/reference/functions",
     "docgen:v1": "npm run build && npm run docgen:v1:extract && npm run docgen:v1:gen",
     "docgen:v2:extract": "api-extractor run -c docgen/api-extractor.v2.json --local",
-    "docgen:v2:gen": "api-documenter-fire markdown -i docgen/v2 -o docgen/v2/markdown && api-documenter-fire toc -i docgen/v2 -o docgen/v2/markdown/toc -p /docs/reference/functions/v2",
+    "docgen:v2:toc": "ts-node docgen/toc.ts --input docgen/v2/markdown --output docgen/v2/markdown/toc --path /docs/functions/beta/reference",
+    "docgen:v2:gen": "api-documenter-fire markdown -i docgen/v2 -o docgen/v2/markdown && npm run docgen:v2:toc",
     "docgen:v2": "npm run build && npm run docgen:v2:extract && npm run docgen:v2:gen",
     "build:pack": "rm -rf lib && npm install && tsc -p tsconfig.release.json && npm pack",
     "build:release": "npm ci --production && npm install --no-save typescript firebase-admin && tsc -p tsconfig.release.json",
@@ -196,6 +197,7 @@
     "@types/node": "^8.10.50",
     "@types/node-fetch": "^3.0.3",
     "@types/sinon": "^7.0.13",
+    "api-extractor-model-me": "^0.1.1",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "child-process-promise": "^2.2.1",