Support multiple open api and mcp for toolset. (#42728)

* Support multiple open api def for toolset.

* add toolset to support multiple mcp tools

* Update sdk/ai/azure-ai-agents/azure/ai/agents/models/_patch.py

Co-authored-by: Copilot <[email protected]>

* update changelog

* Improve merge resource

* add get_tool_resource and get_tool_definitions

* Run black and added test

* code clean up

* fix lint

* fix lint

* fix lint

* update change log

* Support multiple open api def for toolset.

* add toolset to support multiple mcp tools

* Update sdk/ai/azure-ai-agents/azure/ai/agents/models/_patch.py

Co-authored-by: Copilot <[email protected]>

* update changelog

* Improve merge resource

* add get_tool_resource and get_tool_definitions

* Run black and added test

* code clean up

* fix lint

* fix lint

* fix lint

* update change log

* Support multiple open api def for toolset.

* add toolset to support multiple mcp tools

* Update sdk/ai/azure-ai-agents/azure/ai/agents/models/_patch.py

Co-authored-by: Copilot <[email protected]>

* update changelog

* Improve merge resource

* add get_tool_resource and get_tool_definitions

* Run black and added test

* code clean up

* fix lint

* fix lint

* fix lint

* update change log

* Resolve comment

* it pushResolved comments

* Resolve comments

* clean up

* Resolved comment

* resolved comment

* Remove None as default

* Resolved comment

* Resolved comment

---------

Co-authored-by: Copilot <[email protected]>
Co-authored-by: Glenn Harper <[email protected]>

Author: 3 people

sdk/ai/azure-ai-agents/CHANGELOG.md

@@ -2,14 +2,13 @@
 
 # Release History
 
-## 1.2.0b4 (Unreleased)
-
-### Breaking Changes
+## 1.2.0b4 (2025-09-12)
 
 ### Features Added
 
 - Added Computer Use Preview tool for use with the computer-use-preview model
-- Added static `merge_resources` method to `McpTool` with accompanying sample.
+- ToolSet now supports adding multiple McpTool instances and OpenApiTool instances.
+- Added static functions `get_tool_resources` and `get_tool_definitions` in `azure.ai.agents.models` to simplify extracting tool resources and definitions from collections of tools, making it easier to configure agents with multiple tool instances.
 
 ### Bugs Fixed
 
@@ -20,8 +19,11 @@
 
 ### Sample updates
 
-- Added Computer Use Preview tool sample demonstrating use with the computer-use-preview model
 - Added sample demonstrating multiple McpTool instance usage.
+- Added `sample_agents_mcp_stream_eventhandler.py` demonstrating how to use MCP tools with streaming and event handlers for real-time processing.
+- Added `sample_agents_mcp_stream_iteration.py` showing MCP tool usage with streaming iteration for step-by-step response handling.
+- Added `sample_agents_multiple_mcp.py` illustrating how to configure and use multiple MCP tool.
+
 
 ## 1.2.0b3 (2025-08-22)