diff --git a/src/__tests__/proxy-body-limit.test.ts b/src/__tests__/proxy-body-limit.test.ts
index 07bb01a09..f9fab8f7a 100644
--- a/src/__tests__/proxy-body-limit.test.ts
+++ b/src/__tests__/proxy-body-limit.test.ts
@@ -102,9 +102,18 @@ describe("proxy matcher", () => {
       "/api/import/csv/preview",
       // The composition PUT beside the label upload stays behind the proxy.
       "/api/medications/abc/ingredients",
+      // An API path ending in a static-file extension is still an API call:
+      // the last segment is the caller's choice.
+      "/api/mood/tags/custom/x.png",
+      "/api/documents/inbound/abc.txt",
+      "/api/measurements/x.svg",
     ]) {
       expect(re.test(path), path).toBe(true);
     }
+    // Static files outside the API still skip it.
+    for (const path of ["/icons/icon-192.png", "/og.jpg", "/robots.txt"]) {
+      expect(re.test(path), path).toBe(false);
+    }
   });
 });
 
diff --git a/src/proxy.ts b/src/proxy.ts
index 132e9c31a..d5227364c 100644
--- a/src/proxy.ts
+++ b/src/proxy.ts
@@ -857,14 +857,14 @@ export function proxy(request: NextRequest) {
 
 export const config = {
   matcher: [
-    // Apply to all routes except static files, Next.js internals, SW, and
-    // manifest — and except the large-upload API routes listed in
+    // Apply to all routes except static files outside `/api/`, Next.js
+    // internals, SW, and manifest — and except the large-upload API routes in
     // `src/lib/http/proxy-bypass-routes.ts`. Next reads a request body into
     // memory for the proxy before the route runs, so a route whose body may
     // exceed `proxyClientMaxBodySize` (1 MB, next.config.ts) is left out of
     // the matcher and `apiHandler` performs the proxy's duties for it. The
     // alternation must stay equal to that list; `proxy-body-limit.test.ts`
     // compiles this exactly as Next does and checks.
-    "/((?!_next/static|_next/image|favicon.ico|sw\\.js|manifest\\.json|robots\\.txt|sitemap\\.xml|api/(?:import(?:/csv|/labs-csv|/medications-csv|/apple-health-export|/health-connect-export)?|admin/import-apple-health-export|admin/backups/upload|documents/inbound|medications/intake/(?:dose-history-import|bulk)|labs/ocr/extract|medications/[^/]+/ingredients/extract|user/avatar|measurements/batch|workouts/batch|insights/ecg|mood-entries/bulk|cycle/day-logs/bulk)/?$|.*\\.(?:svg|png|jpg|jpeg|gif|webp|txt|xml)$).*)",
+    "/((?!_next/static|_next/image|favicon.ico|sw\\.js|manifest\\.json|robots\\.txt|sitemap\\.xml|api/(?:import(?:/csv|/labs-csv|/medications-csv|/apple-health-export|/health-connect-export)?|admin/import-apple-health-export|admin/backups/upload|documents/inbound|medications/intake/(?:dose-history-import|bulk)|labs/ocr/extract|medications/[^/]+/ingredients/extract|user/avatar|measurements/batch|workouts/batch|insights/ecg|mood-entries/bulk|cycle/day-logs/bulk)/?$|(?!api/).*\\.(?:svg|png|jpg|jpeg|gif|webp|txt|xml)$).*)",
   ],
 };