Checks

• I have updated to the lastest minor and patch version of Strands
• I have checked the documentation and this is not expected behavior
• I have searched ./issues and there are no duplicates of my issue

Strands Version

1.0.1

Python Version

3.13.2

Operating System

macOS 15.5

Installation Method

other

Steps to Reproduce

1. Create or use an MCP tool that returns multiple content types, including EmbeddedResource.
2. Call the tool using MCPClient.
3. Observe that only MCPTextContent and MCPImageContent are mapped and returned; EmbeddedResource is dropped with a debug log entry.

Expected Behavior

All supported content types, including EmbeddedResource, should be mapped and returned in the tool result. The SDK should provide a mapping for EmbeddedResource similar to other content types.

Actual Behavior

MCPClient only maps MCPTextContent and MCPImageContent. EmbeddedResource is dropped, causing loss of resources and incomplete tool results for users relying on EmbeddedResource outputs.

Additional Context

This was discovered while trying to use the github MCP get_file_contents tool.

https://github.com/github/github-mcp-server/blob/efef8ae27a1d62c38c8f760ca38a65845efd3576/pkg/github/repositories.go#L449

Even if called directly:

agent.tool.get_file_contents(owner="example-org", repo="example-repo", path="README.md")

Result:

{'status': 'success', 'toolUseId': 'tooluse_get_file_contents_771272973', 'content': [{'text': 'successfully downloaded text file (SHA: abc123)'}]}

Log:

DEBUG | strands.tools.mcp.mcp_client | [Thread: ThreadPoolExecutor-1_0, Session: a4cad7a7-09f2-44be-8fc5-6c5a14d0c178] unhandled content type: EmbeddedResource - dropping content

Possible Solution

Extend _map_mcp_content_to_tool_result_content in src/strands/tools/mcp/mcp_client.py to add support for EmbeddedResource.

Related Issues

No response