diff --git a/tests/boundary/cli/adbUninstallScope.test.ts b/tests/boundary/cli/adbUninstallScope.test.ts
index ffa8683235..2ae0c295b3 100644
--- a/tests/boundary/cli/adbUninstallScope.test.ts
+++ b/tests/boundary/cli/adbUninstallScope.test.ts
@@ -60,10 +60,10 @@ if (args.length === 1 && args[0] === 'version') {
         harness.client,
         "uninstall_adb_package",
       );
-      const response = await harness.client.callTool({
-        name: schemas.name,
-        arguments: input,
-      });
+      const response = await harness.client.callTool(
+        { name: schemas.name, arguments: input },
+        { toolDefinition: schemas.toolDefinition },
+      );
       if (succeeds) {
         const evidence = parseEvidence(output.json);
         expect(evidence.normalized_result).toMatchObject({
diff --git a/tests/boundary/cli/adbWindowDisplays.test.ts b/tests/boundary/cli/adbWindowDisplays.test.ts
index 0aa4f5c724..6718ed93f3 100644
--- a/tests/boundary/cli/adbWindowDisplays.test.ts
+++ b/tests/boundary/cli/adbWindowDisplays.test.ts
@@ -56,10 +56,10 @@ if (args.length === 1 && args[0] === 'version') {
         harness.client,
         "inspect_adb_window",
       );
-      const response = await harness.client.callTool({
-        name: schemas.name,
-        arguments: { serial },
-      });
+      const response = await harness.client.callTool(
+        { name: schemas.name, arguments: { serial } },
+        { toolDefinition: schemas.toolDefinition },
+      );
       expect(response.isError).not.toBe(true);
       expect(
         schemas.ajv.validate(schemas.outputSchema, response.structuredContent),
diff --git a/tests/boundary/cli/adbWindowFocus.test.ts b/tests/boundary/cli/adbWindowFocus.test.ts
index d54163ceb7..4a0b89a44d 100644
--- a/tests/boundary/cli/adbWindowFocus.test.ts
+++ b/tests/boundary/cli/adbWindowFocus.test.ts
@@ -76,10 +76,10 @@ exit 1
       );
       const args = { serial };
       expect(schemas.ajv.validate(schemas.inputSchema, args)).toBe(true);
-      const response = await harness.client.callTool({
-        name: schemas.name,
-        arguments: args,
-      });
+      const response = await harness.client.callTool(
+        { name: schemas.name, arguments: args },
+        { toolDefinition: schemas.toolDefinition },
+      );
       expect(response.isError).not.toBe(true);
       expect(
         schemas.ajv.validate(schemas.outputSchema, response.structuredContent),
diff --git a/tests/fixtures/advertisedMcpTool.ts b/tests/fixtures/advertisedMcpTool.ts
index 854d272ba4..55521941de 100644
--- a/tests/fixtures/advertisedMcpTool.ts
+++ b/tests/fixtures/advertisedMcpTool.ts
@@ -20,7 +20,13 @@ export const advertisedMcpToolSchemas = async (
   const outputSchema: Record<string, unknown> = advertised.outputSchema;
   expect(ajv.validateSchema(inputSchema)).toBe(true);
   expect(ajv.validateSchema(outputSchema)).toBe(true);
-  return { name: advertised.name, ajv, inputSchema, outputSchema };
+  return {
+    name: advertised.name,
+    toolDefinition: advertised,
+    ajv,
+    inputSchema,
+    outputSchema,
+  };
 };
 
 /** Keep public output, provenance and session retention checks together. */