diff --git a/package-lock.json b/package-lock.json
index f4b27a73..c8c1ebbf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "@kenyip/backoff-strategies": "^1.0.4",
         "@keyv/valkey": "^1.0.8",
         "@lukehagar/plexjs": "^0.39.0",
-        "@minisylar/express-typed-router": "^1.9.3",
+        "@minisylar/express-typed-router": "^1.9.4",
         "@pierre/diffs": "^1.2.4",
         "@rocksky/sdk": "^0.3.0",
         "@supercharge/promise-pool": "^3.0.0",
@@ -3003,9 +3003,9 @@
       }
     },
     "node_modules/@minisylar/express-typed-router": {
-      "version": "1.9.3",
-      "resolved": "https://registry.npmjs.org/@minisylar/express-typed-router/-/express-typed-router-1.9.3.tgz",
-      "integrity": "sha512-Ek4pMAvQSMLoHftqJD5beNTL1dndPCrFUSE2i9WyLVltB4sZ+W6wD1yzgMm3AcjGSfTKTZzVfLaH0ziLh5ECYw==",
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/@minisylar/express-typed-router/-/express-typed-router-1.9.4.tgz",
+      "integrity": "sha512-Xm8rsXHfYp1Ubi17fGuLwk867pm18mOcu2fxf9XUbUKF0Um1Hds3kHx/Xtr27dkL08P8BkTk/UXPc4dJ2t1hwA==",
       "license": "MIT",
       "dependencies": {
         "@standard-schema/spec": "^1.1.0",
diff --git a/package.json b/package.json
index 98eddf94..34cbd668 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "@kenyip/backoff-strategies": "^1.0.4",
     "@keyv/valkey": "^1.0.8",
     "@lukehagar/plexjs": "^0.39.0",
-    "@minisylar/express-typed-router": "^1.9.3",
+    "@minisylar/express-typed-router": "^1.9.4",
     "@pierre/diffs": "^1.2.4",
     "@rocksky/sdk": "^0.3.0",
     "@supercharge/promise-pool": "^3.0.0",
diff --git a/patches/@minisylar+express-typed-router+1.9.3.patch b/patches/@minisylar+express-typed-router+1.9.3.patch
deleted file mode 100644
index 4d8bde3e..00000000
--- a/patches/@minisylar+express-typed-router+1.9.3.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-diff --git a/node_modules/@minisylar/express-typed-router/dist/schema-router.d.cts b/node_modules/@minisylar/express-typed-router/dist/schema-router.d.cts
-index 87de99b..228c288 100644
---- a/node_modules/@minisylar/express-typed-router/dist/schema-router.d.cts
-+++ b/node_modules/@minisylar/express-typed-router/dist/schema-router.d.cts
-@@ -319,13 +319,17 @@ declare class TypedRouter<Req extends Record<string, any> = AdditionalReqProps,
-    */
-   docs(options?: DocsOptions): express.Router & express.RequestHandler;
-   get<Path extends string>(path: Path, handler: SchemaRouteHandler<Path, unknown, unknown, Req, Locals>): TypedRouter<Req, Locals>;
--  get<Path extends string, BodySchema extends AnyStandardSchema | unknown, QuerySchema extends AnyStandardSchema | unknown>(path: Path, options: RouteOptions<BodySchema, QuerySchema>, handler: SchemaRouteHandler<Path, BodySchema, QuerySchema, Req, Locals>): TypedRouter<Req, Locals>;
--  get<Path extends string, Middleware extends readonly TypedMiddleware<any, any>[]>(path: Path, options: {
--    middleware: Middleware;
--  }, handler: SchemaRouteHandler<Path, unknown, unknown, Req & InferMiddlewareProps<Middleware>, Locals & InferMiddlewareLocals<Middleware>>): TypedRouter<Req, Locals>;
--  get<Path extends string, BodySchema extends AnyStandardSchema | unknown, QuerySchema extends AnyStandardSchema | unknown, M extends TypedMiddleware<any, any>[]>(path: Path, options: RouteOptions<BodySchema, QuerySchema> & {
--    middleware: [...M];
--  }, // Using tuple spread pattern
-+  get<Path extends string, BodySchema extends AnyStandardSchema | unknown = unknown, QuerySchema extends AnyStandardSchema | unknown = unknown, M extends TypedMiddleware<any, any>[] = []>(path: Path, options: {
-+    bodySchema?: BodySchema;
-+    querySchema?: QuerySchema;
-+    middleware?: [...M];
-+    tags?: string[];
-+    description?: string;
-+    summary?: string;
-+    deprecated?: boolean;
-+    responseSchema?: AnyStandardSchema;
-+    hidden?: boolean;
-+  }, // Using tuple spread pattern; kept as a flat object (not intersected with a generic RouteOptions<B,Q>) so TS can infer the M tuple and BodySchema/QuerySchema from the same object literal
-   handler: SchemaRouteHandler<Path, BodySchema, QuerySchema, Req & InferMiddlewareProps<readonly [...M]>, // Make it readonly for type inference
-   // Make it readonly for type inference
-   Locals & InferMiddlewareLocals<readonly [...M]>>): TypedRouter<Req, Locals>;
-diff --git a/node_modules/@minisylar/express-typed-router/dist/schema-router.d.mts b/node_modules/@minisylar/express-typed-router/dist/schema-router.d.mts
-index 87de99b..228c288 100644
---- a/node_modules/@minisylar/express-typed-router/dist/schema-router.d.mts
-+++ b/node_modules/@minisylar/express-typed-router/dist/schema-router.d.mts
-@@ -319,13 +319,17 @@ declare class TypedRouter<Req extends Record<string, any> = AdditionalReqProps,
-    */
-   docs(options?: DocsOptions): express.Router & express.RequestHandler;
-   get<Path extends string>(path: Path, handler: SchemaRouteHandler<Path, unknown, unknown, Req, Locals>): TypedRouter<Req, Locals>;
--  get<Path extends string, BodySchema extends AnyStandardSchema | unknown, QuerySchema extends AnyStandardSchema | unknown>(path: Path, options: RouteOptions<BodySchema, QuerySchema>, handler: SchemaRouteHandler<Path, BodySchema, QuerySchema, Req, Locals>): TypedRouter<Req, Locals>;
--  get<Path extends string, Middleware extends readonly TypedMiddleware<any, any>[]>(path: Path, options: {
--    middleware: Middleware;
--  }, handler: SchemaRouteHandler<Path, unknown, unknown, Req & InferMiddlewareProps<Middleware>, Locals & InferMiddlewareLocals<Middleware>>): TypedRouter<Req, Locals>;
--  get<Path extends string, BodySchema extends AnyStandardSchema | unknown, QuerySchema extends AnyStandardSchema | unknown, M extends TypedMiddleware<any, any>[]>(path: Path, options: RouteOptions<BodySchema, QuerySchema> & {
--    middleware: [...M];
--  }, // Using tuple spread pattern
-+  get<Path extends string, BodySchema extends AnyStandardSchema | unknown = unknown, QuerySchema extends AnyStandardSchema | unknown = unknown, M extends TypedMiddleware<any, any>[] = []>(path: Path, options: {
-+    bodySchema?: BodySchema;
-+    querySchema?: QuerySchema;
-+    middleware?: [...M];
-+    tags?: string[];
-+    description?: string;
-+    summary?: string;
-+    deprecated?: boolean;
-+    responseSchema?: AnyStandardSchema;
-+    hidden?: boolean;
-+  }, // Using tuple spread pattern; kept as a flat object (not intersected with a generic RouteOptions<B,Q>) so TS can infer the M tuple and BodySchema/QuerySchema from the same object literal
-   handler: SchemaRouteHandler<Path, BodySchema, QuerySchema, Req & InferMiddlewareProps<readonly [...M]>, // Make it readonly for type inference
-   // Make it readonly for type inference
-   Locals & InferMiddlewareLocals<readonly [...M]>>): TypedRouter<Req, Locals>;
diff --git a/src/backend/server/api.ts b/src/backend/server/api.ts
index ab1968b8..e07cb6ae 100644
--- a/src/backend/server/api.ts
+++ b/src/backend/server/api.ts
@@ -156,7 +156,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         return res.json({data: slicedLog, settings: logConfig});
     });
 
-    router.get('/events', async (req, res) => {
+    router.get('/events', {querySchema: z.object({next: z.string()}).optional()}, async (req, res) => {
         const {
             query: {
                 next: nextQs
@@ -632,7 +632,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         return res.json(result);
     });
 
-    router.get('/source/art', {middleware: [sourceMiddleFunc(false)]}, async (req, res, next) => {
+    router.get('/source/art', {middleware: [sourceMiddleFunc(false)], querySchema: z.object({data: z.number()}).optional()}, async (req, res, next) => {
         const {
             scrobbleSource,
             query: {
@@ -786,7 +786,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         return res.json(result);
     });
 
-    router.post('/source/init', {middleware: [sourceRequiredMiddle]}, async (req, res) => {
+    router.post('/source/init', {middleware: [sourceRequiredMiddle], querySchema: z.object({force: z.boolean()}).optional()}, async (req, res) => {
         const source = req.scrobbleSource as AbstractSource;
 
         const {
@@ -812,7 +812,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         }
     });
 
-    router.post('/source/listen', {middleware: [sourceRequiredMiddle]}, async (req, res) => {
+    router.post('/source/listen', {middleware: [sourceRequiredMiddle], querySchema: z.object({listening: z.boolean()}).optional()}, async (req, res) => {
         const source = req.scrobbleSource as AbstractSource;
 
         const {
@@ -832,7 +832,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         res.status(200).json({listening});
     });
 
-    router.post('/client/listen', {middleware: [clientRequiredMiddle]}, async (req, res) => {
+    router.post('/client/listen', {middleware: [clientRequiredMiddle], querySchema: z.object({listening: z.boolean()}).optional()}, async (req, res) => {
         const client = req.scrobbleClient as AbstractScrobbleClient;
 
         const {
@@ -852,7 +852,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
         res.status(200).json({listening});
     });
 
-    router.post('/client/init', {middleware: [clientRequiredMiddle]}, async (req, res) => {
+    router.post('/client/init', {middleware: [clientRequiredMiddle], querySchema: z.object({force: z.boolean()}).optional()}, async (req, res) => {
         const client = req.scrobbleClient as AbstractScrobbleClient;
 
         const {
@@ -888,7 +888,7 @@ export const setupApi = (app: Express, router: ReturnType<typeof createTypedRout
     });
 
     app.get('/health', async (req, res) => res.redirect(307, `/api/${req.url.slice(1)}`));
-    router.get('/health', async (req, res) => {
+    router.get('/health', {querySchema: z.object({type: z.string(), name: z.string()}).optional()}, async (req, res) => {
         const {
             type,
             name
diff --git a/src/backend/server/endpointListenbrainzRoutes.ts b/src/backend/server/endpointListenbrainzRoutes.ts
index 58a59a6c..ac94feed 100644
--- a/src/backend/server/endpointListenbrainzRoutes.ts
+++ b/src/backend/server/endpointListenbrainzRoutes.ts
@@ -88,7 +88,6 @@ export const setupLZEndpointRoutes = (app: Express, parentLogger: Logger, scrobb
         // but for now just stub out empty response so panoscrobbler doesn't complain
 
         const user = req.params.username;
-        let listens: PlayingNowPayload[];
 
         const sources = scrobbleSources.getByType('endpointlz') as EndpointListenbrainzSource[];
         if (sources.length === 0) {
@@ -101,7 +100,7 @@ export const setupLZEndpointRoutes = (app: Express, parentLogger: Logger, scrobb
         }
 
         const playObjs = scrobbleClients.getPlayingNow(matchedSource.name, matchedSource.clients);
-        listens = playObjs.map(x => ({playing_now: true, track_metadata: playToListenPayload(x).track_metadata}));
+        const listens: PlayingNowPayload[] = playObjs.map(x => ({playing_now: true, track_metadata: playToListenPayload(x).track_metadata}));
 
         return res.status(200).json({
             payload: {