Python: [Bug]: HTTP call to MCP loses tracing parent

[wdrone]

Description

When attempting to do distributed tracing with a ChatAgent and remote MCP server, the Httpx async client loses the appropriate parent span when transmitting to the MCP server. This causes the POST to have a higher-level parent span than the agent framework Execute Tool span. Note the POST to the "ping" tool in the following example trace.

Example Trace

Code Sample

Simple working example

https://github.com/wdrone/agent_framework_distributed_tracing

Error Messages / Stack Traces

Package Versions

agent-framework 1.0.0b260123

Python Version

3.13

Additional Context

No response