diff --git a/bun.lockb b/bun.lockb
index 7ad9d07..11aa9b5 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index ab43b4d..e7df15a 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "files": [
     "dist"
   ],
-  "sideEffects": false,
+  "sideEffects": true,
   "engines": {
     "node": ">=21.0.0",
     "npm": ">=10.0.0"
@@ -67,6 +67,7 @@
   "dependencies": {
     "@laterpay/auth": "^1.1.3",
     "@laterpay/tapper-sdk": "^37.0.0",
+    "@sentry/browser": "^8.24.0",
     "zod": "^3.22.3"
   },
   "targets": {
diff --git a/src/capture-errors.ts b/src/capture-errors.ts
new file mode 100644
index 0000000..afab4c5
--- /dev/null
+++ b/src/capture-errors.ts
@@ -0,0 +1,16 @@
+import { SENTRY_DSN } from "./env";
+
+export const sendErrorToSentry = async (error: Error) => {
+  if (SENTRY_DSN) {
+    const { captureException } = await import("./sentry");
+    captureException(error);
+  }
+};
+
+window.addEventListener("error", (event) => {
+  sendErrorToSentry(event.error);
+});
+
+window.addEventListener("unhandledrejection", (event) => {
+  sendErrorToSentry(event.reason);
+});
diff --git a/src/env.ts b/src/env.ts
index e38f005..b65617a 100644
--- a/src/env.ts
+++ b/src/env.ts
@@ -6,6 +6,9 @@ const envSchema = z.object({
   SSO_BASE_URL: z.string(),
   TAPI_BASE_URL: z.string(),
   CHECKOUT_BASE_URL: z.string(),
+  SENTRY_DSN: z.string().optional(),
+  PACKAGE_NAME: z.string().optional(),
+  PACKAGE_VERSION: z.string().optional(),
 });
 
 export const {
@@ -14,10 +17,16 @@ export const {
   SSO_BASE_URL,
   TAPI_BASE_URL,
   CHECKOUT_BASE_URL,
+  SENTRY_DSN,
+  PACKAGE_NAME,
+  PACKAGE_VERSION,
 } = envSchema.parse({
   AUTH_URL: process.env.AUTH_URL,
   TOKEN_URL: process.env.TOKEN_URL,
   SSO_BASE_URL: process.env.SSO_BASE_URL,
   TAPI_BASE_URL: process.env.TAPI_BASE_URL,
   CHECKOUT_BASE_URL: process.env.CHECKOUT_BASE_URL,
+  SENTRY_DSN: process.env.SENTRY_DSN,
+  PACKAGE_NAME: process.env.PACKAGE_NAME,
+  PACKAGE_VERSION: process.env.PACKAGE_VERSION,
 });
diff --git a/src/index.ts b/src/index.ts
index 9b5fb7b..5ae06f8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -26,6 +26,7 @@ import { authFlow, getAuthStatus, getAccessToken, AuthStatus } from "./auth";
 import { DEFAULT_CURRENCY, formatPrice } from "./price";
 import { Authenticable, FormattedTab, ScreenHint, SystemUrls } from "./types";
 import { handleChildWindow, openBlankChildWindow } from "./window";
+import "./capture-errors";
 
 function authenticated(
   target: Authenticable,
diff --git a/src/sentry.ts b/src/sentry.ts
new file mode 100644
index 0000000..52d25fa
--- /dev/null
+++ b/src/sentry.ts
@@ -0,0 +1,33 @@
+import * as Sentry from "@sentry/browser";
+import {
+  PACKAGE_NAME,
+  PACKAGE_VERSION,
+  SENTRY_DSN,
+  TAPI_BASE_URL,
+} from "./env";
+
+Sentry.init({
+  dsn: SENTRY_DSN,
+  release: `${PACKAGE_NAME}@${PACKAGE_VERSION}`,
+  environment: TAPI_BASE_URL.includes("sbx")
+    ? "sbx"
+    : TAPI_BASE_URL.includes("stg")
+      ? "stg"
+      : "prod",
+  integrations: [Sentry.browserTracingIntegration()],
+  beforeSend: (event: Sentry.ErrorEvent) => {
+    const found = event.exception?.values?.some(
+      (value) =>
+        value.stacktrace?.frames?.some(
+          (frame) => frame.filename?.match(/dist\/(prod|sbx|stg)\/index\.js/),
+        ),
+    );
+
+    return found ? event : null;
+  },
+  tracesSampleRate: 1.0, //  Capture 100% of the transactions
+  // Set 'tracePropagationTargets' to control for which URLs distributed tracing should be enabled
+});
+
+export const captureException = (error: Error) =>
+  Sentry.captureException(error);
diff --git a/tsup.prod.config.ts b/tsup.prod.config.ts
index f77db4c..9ca67d5 100644
--- a/tsup.prod.config.ts
+++ b/tsup.prod.config.ts
@@ -1,4 +1,5 @@
 import { defineConfig } from "tsup";
+import { name, version } from "./package.json";
 
 export default defineConfig({
   entry: ["index.ts"],
@@ -16,6 +17,10 @@ export default defineConfig({
     SSO_BASE_URL: "https://signon.supertab.co",
     TAPI_BASE_URL: "https://tapi.laterpay.net",
     CHECKOUT_BASE_URL: "https://checkout.supertab.co",
+    SENTRY_DSN:
+      "https://52977a2775f03e0a17133cee24848baa@o23455.ingest.us.sentry.io/4507741231448064",
+    PACKAGE_NAME: JSON.stringify(name),
+    PACKAGE_VERSION: JSON.stringify(version),
   },
-  noExternal: ["zod", "@laterpay/tapper-sdk"],
+  noExternal: ["zod", "@laterpay/tapper-sdk", "@sentry/browser"],
 });
diff --git a/tsup.sbx.config.ts b/tsup.sbx.config.ts
index e010837..13ccb88 100644
--- a/tsup.sbx.config.ts
+++ b/tsup.sbx.config.ts
@@ -1,4 +1,5 @@
 import { defineConfig } from "tsup";
+import { name, version } from "./package.json";
 
 export default defineConfig({
   entry: ["index.ts"],
@@ -16,6 +17,10 @@ export default defineConfig({
     SSO_BASE_URL: "https://signon.sbx.supertab.co",
     TAPI_BASE_URL: "https://tapi.sbx.laterpay.net",
     CHECKOUT_BASE_URL: "https://checkout.sbx.supertab.co",
+    SENTRY_DSN:
+      "https://52977a2775f03e0a17133cee24848baa@o23455.ingest.us.sentry.io/4507741231448064",
+    PACKAGE_NAME: JSON.stringify(name),
+    PACKAGE_VERSION: JSON.stringify(version),
   },
-  noExternal: ["zod", "@laterpay/tapper-sdk"],
+  noExternal: ["zod", "@laterpay/tapper-sdk", "@sentry/browser"],
 });
diff --git a/tsup.stg.config.ts b/tsup.stg.config.ts
index f588429..d3f0c19 100644
--- a/tsup.stg.config.ts
+++ b/tsup.stg.config.ts
@@ -1,4 +1,5 @@
 import { defineConfig } from "tsup";
+import { name, version } from "./package.json";
 
 export default defineConfig({
   entry: ["index.ts"],
@@ -16,6 +17,10 @@ export default defineConfig({
     SSO_BASE_URL: "https://signon.stg.supertab.co",
     TAPI_BASE_URL: "https://tapi.stg.supertab.co",
     CHECKOUT_BASE_URL: "https://checkout.stg.supertab.co",
+    SENTRY_DSN:
+      "https://52977a2775f03e0a17133cee24848baa@o23455.ingest.us.sentry.io/4507741231448064",
+    PACKAGE_NAME: JSON.stringify(name),
+    PACKAGE_VERSION: JSON.stringify(version),
   },
-  noExternal: ["zod", "@laterpay/tapper-sdk"],
+  noExternal: ["zod", "@laterpay/tapper-sdk", "@sentry/browser"],
 });