diff --git a/src/application/native/EnhancedNativeInvestigation.test.ts b/src/application/native/EnhancedNativeInvestigation.test.ts
index 093e8d4825..2d86caedc9 100644
--- a/src/application/native/EnhancedNativeInvestigation.test.ts
+++ b/src/application/native/EnhancedNativeInvestigation.test.ts
@@ -308,6 +308,9 @@ describe("native UI action trace", () => {
       }),
     );
   });
+});
+
+describe("native UI action seed resolution", () => {
   it("accepts an explicit native seed without an authored UI connection", async () => {
     const result = await new EnhancedTools(
       testAnalysis({
@@ -324,6 +327,31 @@ describe("native UI action trace", () => {
       },
     });
   });
+  it.each(["", null, 0, { address: "0x1000" }])(
+    "rejects a malformed provider canonical seed address: %j",
+    async (address) => {
+      let traversed = false;
+      const result = await new EnhancedTools(
+        testAnalysis({
+          procedure_address: () => execution("procedure_address", address),
+          procedure_callees: () => {
+            traversed = true;
+            return execution("procedure_callees", []);
+          },
+        }),
+      ).execute("trace_native_ui_action", { action: "missing-selector" });
+
+      expect(result).toMatchObject({
+        ok: false,
+        error: {
+          _tag: "AnalysisOutputError",
+          operation: "procedure_address",
+          reason: "provider returned no canonical procedure address",
+        },
+      });
+      expect(traversed).toBe(false);
+    },
+  );
   it("builds the evidence path from provider names with declared symbol facts", async () => {
     const tools = new EnhancedTools(
       testAnalysis({
diff --git a/src/application/native/NativeUiActionTrace.ts b/src/application/native/NativeUiActionTrace.ts
index 350c2cd199..50e3d8e9f0 100644
--- a/src/application/native/NativeUiActionTrace.ts
+++ b/src/application/native/NativeUiActionTrace.ts
@@ -14,6 +14,7 @@ import {
 } from "../../domain/native/nativeInvestigationGraph.js";
 import { nativeDispatchMetadataResultSchema } from "../../domain/native/objcSwiftMetadata.js";
 import { inspectNativeDispatch } from "./NativeDispatchMetadataInspection.js";
+import { parseProcedureAddress } from "../ProcedureAddressResolution.js";
 import { jsonValueSchema } from "../../domain/jsonValue.js";
 import { readNativeCallRoutes } from "./NativeCallRoutes.js";
 import {
@@ -163,26 +164,27 @@ export const traceNativeUiAction = async (
     if (!native.ok && !permitsCapabilityFallback(native.error))
       return err(native.error);
     if (native.ok) {
-      const address = z.string().safeParse(native.value.result);
-      if (!address.success || native.value.subject?.sha256 !== targetSha256)
+      const address = parseProcedureAddress(native.value.result);
+      if (!address.ok) return address;
+      if (native.value.subject?.sha256 !== targetSha256)
         return err(
           new AnalysisOutputError(
             NATIVE_UI_ACTION_OPERATIONS.nativeSeed,
-            "Native seed lacks a validated address or matching target identity",
+            "Native seed lacks matching target identity",
           ),
         );
-      const id = `native:function:${address.data}`;
+      const id = `native:function:${address.value}`;
       graph.nodes.push({
         id,
         kind: "function",
         name: input.action,
-        location: { address: address.data, file_offset: null },
+        location: { address: address.value, file_offset: null },
         attributes: { resolved_by: native.value.provider.id },
         evidence: [
           {
             kind: "reference",
             description: `Provider resolved the explicit native seed ${input.action}`,
-            location: { address: address.data, file_offset: null },
+            location: { address: address.value, file_offset: null },
             artifact_path: null,
             artifact_sha256: targetSha256,
           },