diff --git a/docker-compose.macmini.yml b/docker-compose.macmini.yml
index edc3b87ae..3e74542b5 100644
--- a/docker-compose.macmini.yml
+++ b/docker-compose.macmini.yml
@@ -290,6 +290,10 @@ services:
       # returns 503 GRANT_NOT_CONFIGURED (graceful degrade).
       MANA_AI_PUBLIC_KEY_PEM: ${MANA_AI_PUBLIC_KEY_PEM:-}
       MANA_NOTIFY_URL: http://mana-notify:3013
+      # Glitchtip error reporting (Phase 2d, 2026-05-07). DSN is the
+      # mana-platform project on glitchtip.mana.how; per-service env so
+      # each service ends up tagged with its serverName.
+      GLITCHTIP_DSN: ${GLITCHTIP_DSN_MANA_PLATFORM:-}
       MAX_DAILY_SIGNUPS: ${MAX_DAILY_SIGNUPS:-0}
       # Must be a superset of TRUSTED_ORIGINS in
       # services/mana-auth/src/auth/better-auth.config.ts.
diff --git a/services/mana-auth/package.json b/services/mana-auth/package.json
index f2426eb2f..feec90949 100644
--- a/services/mana-auth/package.json
+++ b/services/mana-auth/package.json
@@ -14,6 +14,7 @@
 	"dependencies": {
 		"@better-auth/passkey": "^1.6.8",
 		"@mana/shared-ai": "workspace:*",
+		"@mana/shared-error-tracking": "workspace:*",
 		"@mana/shared-hono": "workspace:*",
 		"@mana/shared-types": "workspace:*",
 		"bcryptjs": "^3.0.2",
diff --git a/services/mana-auth/src/index.ts b/services/mana-auth/src/index.ts
index 2c525f67d..8b2981306 100644
--- a/services/mana-auth/src/index.ts
+++ b/services/mana-auth/src/index.ts
@@ -5,6 +5,17 @@
  * Uses Better Auth natively (fetch-based handler, no Express conversion).
  */
 
+// Sentry/Glitchtip — must run before the rest of the module loads so
+// uncaughtException + unhandledRejection get hooked. No-op when
+// GLITCHTIP_DSN is unset (e.g. local dev).
+import { initErrorTracking, captureException } from '@mana/shared-error-tracking';
+initErrorTracking({
+	serviceName: 'mana-auth',
+	dsn: process.env.GLITCHTIP_DSN,
+	environment: process.env.NODE_ENV,
+	release: process.env.GIT_SHA,
+});
+
 import { Hono } from 'hono';
 import { cors } from 'hono/cors';
 import { trimTrailingSlash } from 'hono/trailing-slash';
@@ -77,7 +88,19 @@ const missionGrantService = new MissionGrantService(
 
 const app = new Hono();
 
-app.onError(errorHandler);
+app.onError((err, c) => {
+	// Surface non-HTTPException errors to Glitchtip with request context.
+	// HTTPException is intentional 4xx/422 etc. — not an "error" worth alerting on.
+	const isHttpException = err.constructor.name === 'HTTPException';
+	if (!isHttpException) {
+		captureException(err, {
+			path: c.req.path,
+			method: c.req.method,
+			query: Object.fromEntries(new URL(c.req.url).searchParams),
+		});
+	}
+	return errorHandler(err, c);
+});
 app.use('*', requestLogger());
 // Defense-in-depth for clients that accidentally request the trailing-slash
 // form of a route (e.g. `/api/v1/me/onboarding/`). Hono's nested-router root