* .NET: Add A2A input-request content for human-in-the-loop scenarios
Adds first-class support for handling user input requests from A2A agents
when they return an `input-required` task state.
- Add `A2AInputRequestContent` (wraps the requested `AIContent`) and
`A2AInputResponseContent` (wraps the user's `AIContent` reply), with
`CreateResponse` helper overloads on the request type.
- Surface input requests on `AgentResponse` / `AgentResponseUpdate` via
`AgentTask` and `TaskStatusUpdateEvent` mappings.
- Link follow-up messages containing `A2AInputResponseContent` to the
existing task via `TaskId` instead of `ReferenceTaskIds`.
- Add `A2AAgent_HumanInTheLoop` sample and register it in the solution
and parent README.
- Add unit tests for the new types, extensions, and `A2AAgent` paths.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Remove unnecessary using directive flagged by CI format check
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* address feedback
* Guard against null TaskId when sending A2AInputResponseContent
Throw InvalidOperationException if TaskId is missing when the message
contains A2AInputResponseContent, preventing silent no-op responses.
Also adds tests for both RunAsync and RunStreamingAsync paths.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Leave Contents null for non-InputRequired status updates
Remove unnecessary '?? []' fallback so Contents stays null when there
are no input requests, matching the other update mapping patterns.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use consistent GUID format for request IDs
Use ToString("N") to match message ID format used elsewhere in
the A2A component.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Remove Debug build exclusion for the HumanInTheLoop sample so it participates in normal solution validation.
* Add missing using Microsoft.Extensions.AI to A2AAgent_HumanInTheLoop
The sample uses ChatMessage, TextContent, and ChatRole types from
Microsoft.Extensions.AI but was missing the using directive, causing
CS0246 build errors on all CI jobs.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* change the way user input requests are handled based on pr review comments
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* .NET: [BREAKING] Add session statebag to use for state storage instead of inside providers (#3737)
* Add a StateBag to AgentSession and pass Agent and AgentSession to AIContextProvider and ChatHistoryProviders
* Convert all AIContextProviders to use the statebag
* Update InMemoryChatHistoryProvider to use StateBag
* Update Comsos and Workflow ChatHistoryProviders
* Update 3rd party chat history storage sample.
* Remove serialize method from providers
* Replacing provider factories with properties
* Remove Providers from Session and flatten state bag serialization
* Update samples to use getservice on agent
* Updated additional session types to serialize statebag
* Fix regression
* Address PR comments
* Address PR comments.
* Fix formatting
* Fix unit tests
* Remove InMemoryAgentSession since it is not required anymore.
* Address PR comments
* Convert sessions for A2AAgent, ChatClientAgent, CopilotStudioAgent and GithubCopilotAgent to use regular json serialization.
* Fix durable agent session jso usgae
* Add jso to InMemory and Workflow ChatHistoryProviders
* Update InMemoryChatHistoryProvider to use an options class for it's many optional settings.
* Apply suggestions from code review
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Address PR feedback
* Fix verification bug.
* Improve state bag thread safety
* Address PR comments and fix unit tests
* Address PR comments
* Fix unit test
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Add a public StateKey property to providers (#3810)
* .NET: [BREAKING] Update providers in such a way that they can participate in a pipeline (#3846)
* Make providers pipeline capable
* Fix unit tests
* Move source stamping to providers from base class
* Also update samples.
* Address PR comments
* Rename AsAgentRequestMessageSourcedMessage to WithAgentRequestMessageSource
* .NET: [BREAKING] Add consistent message filtering to all providers. (#3851)
* Add consistent message filtering to all providers.
* Remove old chat history filtering classes
* Fix merge issues
* Fix unit test
* Enforce non-nullable property
* Fix merging bug and make troubleshooting source info easier by adding tostring implementation
* .NET: [BREAKING] Add support for multiple AIContextProviders on a ChatClientAgent (#3863)
* Add support for multiple AIContextProviders on a ChatClientAgent
* Address PR comments and fix tests
* Address PR comments.
* .NET: [BREAKING]Delay AIContext Materialization until the end of the pipeline is reached. (#3883)
* Delay AIContext Materialization until the end of the pipeline is reached.
* Address PR comments.
* Address PR comments
* Modify InvokedContext to be immutable (#3888)
* .NET: Address Feedback on StateBag feature branch PR (#3910)
* Address Feedback on statebag feature branch PR
* Update dotnet/src/Microsoft.Agents.AI.DurableTask/CHANGELOG.md
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Address PR comments
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Move AgentSession.Serialize to AIAgent
* Address PR comments.
* Improve code and fix unit test
* Update test agents to return a default json element instead of throwing where the the result of the serialization is never used.
* Update further tests to actually serialize the session
SergeyMenshykh ·
westey ·