diff --git a/.gitignore b/.gitignore
index 8ab36b8..70ebdd8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 # Dependency directory
 node_modules
+dist/
diff --git a/compat.js b/compat.js
new file mode 100644
index 0000000..ae13b20
--- /dev/null
+++ b/compat.js
@@ -0,0 +1,47 @@
+// @ts-check
+/* eslint-env node */
+/* eslint-disable @typescript-eslint/no-var-requires */
+const Geckoboard = require('.').default;
+import { version } from './package.json';
+
+/**
+ * @param {string} apiKey
+ */
+function gb(apiKey) {
+  const client = new Geckoboard(apiKey);
+  return {
+    ping(cb) {
+      client.ping().then(() => cb(), cb);
+    },
+    datasets: {
+      findOrCreate(datasetMeta, cb) {
+        const dataset = client.defineDataset(datasetMeta);
+        dataset.create().then(
+          () =>
+            cb(null, {
+              id: dataset.id,
+              put(data, cb) {
+                dataset.replace(data).then(() => cb(), cb);
+              },
+              post(data, options, cb) {
+                const deleteBy = options ? options.delete_by : undefined;
+                dataset.append(data, deleteBy).then(() => cb(), cb);
+              },
+              delete(cb) {
+                dataset.delete().then(() => cb(), cb);
+              },
+            }),
+          (err) => cb(err),
+        );
+      },
+      delete(id, cb) {
+        const dataset = client.defineDataset({ id, fields: {}, uniqueBy: [] });
+        dataset.delete().then(() => cb(), cb);
+      },
+    },
+  };
+}
+
+gb.VERSION = version;
+
+module.exports = gb;