.Net: Input & output attributes in invoke_agent span #12928
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### Motivation and Context <!-- Thank you for your contribution to the semantic-kernel repo! Please help reviewers and future users, providing the following information: 1. Why is this change required? 2. What problem does it solve? 3. What scenario does it contribute to? 4. If it fixes an open issue, please link to the issue here. --> The OTel workgroup has been thinking about enhancing tracing for agents. This is a proposal from our tracing team: open-telemetry/semantic-conventions#2528. This PR implements part of the proposal so that when the proposal gets merged, we can quickly follow. This is a follow-up PR after the Python PR #12834 ### Description <!-- Describe your changes, the overall approach, the underlying design. These notes will help understanding how your code works. Thanks! --> Two new attributes are added to the invoke_agent span, namely the `gen_ai.agent.invocation_input` and `gen_ai.agent.invocation_output`. <img width="870" height="384" alt="image" src="https://github.com/user-attachments/assets/c2cf069a-af00-4ae2-8fed-745c166d9cbc" /> ### Contribution Checklist <!-- Before submitting this PR, please make sure: --> - [x] The code builds clean without any errors or warnings - [x] The PR follows the [SK Contribution Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md) and the [pre-submission formatting script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts) raises no violations - [x] All unit tests pass, and I have added new tests where possible - [x] I didn't break anyone 😄 --------- Co-authored-by: Chris <[email protected]>
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Motivation and Context
The OTel workgroup has been thinking about enhancing tracing for agents. This is a proposal from our tracing team: open-telemetry/semantic-conventions#2528. This PR implements part of the proposal so that when the proposal gets merged, we can quickly follow.
This is a follow-up PR after the Python PR #12834
Description
Two new attributes are added to the invoke_agent span, namely the
gen_ai.agent.invocation_inputandgen_ai.agent.invocation_output.Contribution Checklist