From 4c5d9e88b0a94a329fab6653fc09ef3cece65925 Mon Sep 17 00:00:00 2001
From: Dominik Kundel <dkundel@openai.com>
Date: Mon, 9 Jun 2025 09:49:07 -0700
Subject: [PATCH 1/2] feat(openai): pass through unknown hosted tools

---
 .../agents-openai/src/openaiResponsesModel.ts   |  5 +++++
 .../test/openaiResponsesModel.helpers.test.ts   | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/packages/agents-openai/src/openaiResponsesModel.ts b/packages/agents-openai/src/openaiResponsesModel.ts
index d6767618..c37a8756 100644
--- a/packages/agents-openai/src/openaiResponsesModel.ts
+++ b/packages/agents-openai/src/openaiResponsesModel.ts
@@ -175,6 +175,11 @@ function converTool<_TContext = unknown>(
         },
         include: undefined,
       };
+    } else if (tool.providerData) {
+      return {
+        tool: tool.providerData as unknown as OpenAI.Responses.Tool,
+        include: undefined,
+      };
     }
   }
 
diff --git a/packages/agents-openai/test/openaiResponsesModel.helpers.test.ts b/packages/agents-openai/test/openaiResponsesModel.helpers.test.ts
index a4accdf1..68f60c68 100644
--- a/packages/agents-openai/test/openaiResponsesModel.helpers.test.ts
+++ b/packages/agents-openai/test/openaiResponsesModel.helpers.test.ts
@@ -125,6 +125,23 @@ describe('converTool', () => {
       quality: undefined,
       size: undefined,
     });
+
+    const custom = converTool({
+      type: 'hosted_tool',
+      providerData: {
+        type: 'mcp',
+        server_label: 'deepwiki',
+        server_url: 'https://mcp.deepwiki.com/mcp',
+        require_approval: 'never',
+      },
+    } as any);
+
+    expect(custom.tool).toEqual({
+      type: 'mcp',
+      server_label: 'deepwiki',
+      server_url: 'https://mcp.deepwiki.com/mcp',
+      require_approval: 'never',
+    });
   });
 
   it('throws on unsupported tool', () => {

From 39e6b3efa6c441b74af06cc1a664191d75f2318e Mon Sep 17 00:00:00 2001
From: Dominik Kundel <dkundel@openai.com>
Date: Mon, 9 Jun 2025 12:54:57 -0700
Subject: [PATCH 2/2] Create rich-buses-marry.md

---
 .changeset/rich-buses-marry.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/rich-buses-marry.md

diff --git a/.changeset/rich-buses-marry.md b/.changeset/rich-buses-marry.md
new file mode 100644
index 00000000..2183dd1d
--- /dev/null
+++ b/.changeset/rich-buses-marry.md
@@ -0,0 +1,5 @@
+---
+"@openai/agents-openai": patch
+---
+
+feat: handle unknown hosted tools in responses model