diff --git a/.changeset/v1-remote-binding-error-properties.md b/.changeset/v1-remote-binding-error-properties.md
new file mode 100644
index 00000000000..82478e037a1
--- /dev/null
+++ b/.changeset/v1-remote-binding-error-properties.md
@@ -0,0 +1,7 @@
+---
+"@cloudflare/vite-plugin": patch
+---
+
+Preserve machine-readable error properties from remote bindings
+
+Enable enhanced error serialization on the remote proxy Worker used by Vite plugin v1. Combined with Miniflare 5.20261023.1-beta, remote binding errors retain properties such as `code` and `numericCode` so Worker code can handle them without parsing error messages.
diff --git a/packages/remote-bindings/src/start-remote-proxy-session.ts b/packages/remote-bindings/src/start-remote-proxy-session.ts
index aa4d9d78daa..5f265a56101 100644
--- a/packages/remote-bindings/src/start-remote-proxy-session.ts
+++ b/packages/remote-bindings/src/start-remote-proxy-session.ts
@@ -122,7 +122,9 @@ export async function startRemoteProxySession(
 		cliDisplayName: options.cliDisplayName,
 		entrypointSource: remoteBindingsWorkerSource,
 		compatibilityDate: "2025-04-28",
-		compatibilityFlags: [],
+		// Keep custom error names and properties (for example Artifacts `code` and
+		// `numericCode`) when errors cross from the remote binding into this worker.
+		compatibilityFlags: ["enhanced_error_serialization"],
 		complianceRegion: options.complianceRegion,
 		bindings: rawBindings,
 		auth: getRemoteBindingsAuthHook(