52 Commits

• add AgentSession StateBag edge case coverage (#5838)

  Co-authored-by: Challa Ravindranath <chravin@microsoft.com>

  Challa Ravi · 2026-05-15 11:02:37 +00:00
  d81a8753d7
• .NET: BugFix #3433 ChatClientAgent streaming responses missing messageid (#4615)

  * Changes
  
  * Fix ChatClientAgent streaming responses missing MessageId
  
  Generate fallback MessageId in ChatClientAgent.RunCoreStreamingAsync when
  the underlying LLM provider does not set ChatResponseUpdate.MessageId.
  Without a MessageId the AGUI converter's null==null check silently drops
  all text content, causing CopilotKit Zod validation errors.
  
  Changes:
  - ChatClientAgent: generate msg_{Guid} fallback via ??= in streaming loop
  - AgentResponseExtensions: sync wrapper MessageId back to RawRepresentation
    in AsChatResponseUpdate() so downstream consumers see the value
  - Add unit tests for both fixes and AGUI streaming MessageId scenarios
  
  Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  
  * Address PR #4615 review comments
  
  - Fix MessageId seeding: use first-seen provider MessageId (or generate
    fallback) and apply consistently to all chunks in the stream, preventing
    message splitting when providers set MessageId only on the first chunk
  - Add test for mixed MessageId scenario (first chunk only)
  - Fix skipped TextStreaming test: assert Empty (not NotEmpty) to match
    actual null==null behavior
  - Fix skipped ToolCalls test: assert empty ParentMessageId to match
    actual empty-string passthrough behavior
  
  * Handle empty MessageId in AsChatResponseUpdate sync
  
  Treat empty/whitespace MessageId the same as null when syncing from
  the AgentResponseUpdate wrapper back to RawRepresentation. Providers
  that return empty string MessageId (e.g. tool call responses) now get
  the wrapper value recovered correctly.
  
  Add test for empty string MessageId recovery scenario.
  
  * Move MessageId fallback generation to AGUI layer
  
  Move fallback MessageId generation from ChatClientAgent to
  AsAGUIEventStreamAsync, addressing the architectural concern that
  MessageId is nullable in the AIAgent abstraction and the requirement
  for non-null values is specific to the AGUI protocol.
  
  The AGUI layer now generates a fallback MessageId for null or
  empty/whitespace values, covering all agent types (not just
  ChatClientAgent) including external implementations.
  
  Changes:
  - Revert MessageId generation from ChatClientAgent.RunCoreStreamingAsync
  - Add fallback MessageId generation in AsAGUIEventStreamAsync for
    null/empty MessageId values (handles both null and whitespace)
  - Unskip and update AGUI tests to verify fallback generation
  - Update ChatClientAgent tests to reflect passthrough behavior
  
  * Revert AsChatResponseUpdate MessageId sync-back
  
  Remove the MessageId sync-back logic from AsChatResponseUpdate() as it
  is no longer needed. With fallback generation moved to the AGUI layer,
  the abstraction layer should not mutate the RawRepresentation object.
  
  Revert to the original passthrough behavior for AsChatResponseUpdate()
  and update tests accordingly.
  
  ---------
  
  Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

  Roger Barreto · 2026-03-30 11:55:30 +00:00
  ca02146ee4
• .NET: Add FinishReason to AgentResponses (#4617)

  * Add FinishReason to AgentResponses
  
  * Address PR comments

  westey · 2026-03-11 14:22:56 +00:00
  2f8fd5f82f
• .NET: [BREAKING] Change *Provider StateKey to list of StateKeys (#4395)

  * Change *Provider StateKey to list of StateKeys
  
  * Add more statekey validation tests
  
  * Address PR comments

  westey · 2026-03-03 17:25:22 +00:00
  d5da6e05d8
• [BREAKING] Add response filter for store input in *Providers (#4327)

  * Add response filter for store input for *Providers
  
  * Apply suggestions from code review
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Address feedback
  
  * Apply suggestions from code review
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>

  westey · 2026-03-03 11:02:02 +00:00
  945933c351
• .NET: Add helpers to more easily access in-memory ChatHistory and make ChatHistoryProvider management more configurable. (#4224)

  * Add helpers to more easily access in-memory ChatHistory and make ChatHistoryProvider management more configurable.
  
  * Apply suggestion from @Copilot
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-02-26 14:16:21 +00:00
  822a3eb5ea
• .NET: Support a message only AIContextProvider as an AIAgent Decorator (#4009)

  * Support a message only AIContextProvider as an AIAgent Decorator
  
  * Fix formatting
  
  * Address PR comments.

  westey · 2026-02-19 19:03:56 +00:00
  40d3a0655c
• Replace Typed Base Providers with Composition (#3988)
  westey · 2026-02-17 15:06:43 +00:00
  cd4e36ebf7
• .NET: [BREAKING] Refactor providers to move common functionality to base (#3900)

  * Move common functionality to provider base classes
  
  Co-Authored-By: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Address PR comments.
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-02-16 19:02:47 +00:00
  54a67d96cd
• .NET: [Breaking] Structured Output improvements (#3761)

  * .NET: Delete AgentResponse.{Try}Deserialize<T> methods (#3518)
  
  * delete deserialize method of agent response
  
  * order usings
  
  * Update dotnet/samples/GettingStarted/FoundryAgents/FoundryAgents_Step05_StructuredOutput/Program.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/samples/GettingStarted/Workflows/_Foundational/08_WriterCriticWorkflow/Program.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/samples/GettingStarted/AGUI/Step05_StateManagement/Server/SharedStateAgent.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/samples/AGUIClientServer/AGUIDojoServer/SharedState/SharedStateAgent.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/samples/M365Agent/Agents/WeatherForecastAgent.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * .NET:[Breaking] Add support for structured output (#3658)
  
  * add support for so
  
  * restore lost xml comment part
  
  * fix using ordering
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AIAgentStructuredOutput.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AIAgentStructuredOutput.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/tests/Microsoft.Agents.AI.UnitTests/ChatClient/ChatClientAgent_SO_WithFormatResponseTests.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * addressw pr review comments
  
  * address pr review feedback
  
  * address pr review comments
  
  * fix compilation issues after the latest merge with main
  
  * remove unnecessry options
  
  * remove RunAsync<object> methods
  
  * address code review feedback
  
  * address pr review feedback
  
  * make copy constructor protected
  
  * address pr review feedback
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * .NET: Add decorator for structured output support (#3694)
  
  * add decorator that adds structured output support to agents that don't natively support it.
  
  * Update dotnet/src/Microsoft.Agents.AI/StructuredOutput/StructuredOutputAgentResponse.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * Update dotnet/samples/GettingStarted/Agents/Agent_Step05_StructuredOutput/Program.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * address pr review feedback
  
  ---------
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * .NET: Support primitives and arrays for SO (#3696)
  
  * wrap primitives and arrays
  
  * fix file encoding
  
  * address review comments
  
  * add adr
  
  * add missed change
  
  * fix compilation issue
  
  * address review comments
  
  * rename adr file name
  
  * reflect decision to have SO decorator as a reference implementation in samples
  
  * .NET: Move SO agent to samples (#3820)
  
  * move SO agent to samples
  
  * change file encoding
  
  * fix files encoding
  
  * .NET: Preserve caller context (#3803)
  
  * fix stuck orchestration
  
  * add previously removed RunAsync<T> method to DurableAIAgent
  
  * suppress IDE0005 warning
  
  * update changelog and remove unused constructor of AgentResponse<T>
  
  * updatge the changelog
  
  * address PR review feedback
  
  * .NET: Disable irrelevant integration test (#3913)
  
  * disable irrelevant integration test
  
  * Update dotnet/tests/AzureAI.IntegrationTests/AIProjectClientAgentStructuredOutputRunTests.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * forgotten change
  
  * address pr review feedback
  
  * disable intermittently failing integration test.
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>

  SergeyMenshykh · 2026-02-13 17:03:51 +00:00
  9506fb28f6
• .NET: [BREAKING] Add session StateBag for state storage and support multiple providers on the Agent (#3806)

  * .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
  
  ---------
  
  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
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-02-13 14:08:07 +00:00
  3168eb4870
• .NET: [BREAKING] Change SerializeSession to be Async (#3879)

  * Change SerializeSession to be Async
  
  * Update Changelog

  westey · 2026-02-12 11:56:42 +00:00
  6a88c7b1a1
• .NET: [BREAKING] Update message source code to match python. (#3805)

  * Update message source code to match python.
  
  * Apply suggestion from @Copilot
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Address PR comment
  
  * Move setting of source information to extension method
  
  * Add underscore for attribution key to indicate internal usage
  
  * Stick to version 102 of the SDK since 103 is causing issues.
  
  * Revert global.json change
  
  * Fix unit test
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-02-10 19:21:18 +00:00
  7dccf3a07b
• .NET: [BREAKING] Add ability to mark the source of Agent request messages and use that for filtering (#3540)

  * Add ability to mark the source of Agent request messages and use that for filtering
  
  * Add support for source, in addition to source type, and add unit tests for automatic stamping
  
  * Address PR comments.
  
  * Add merge fixes
  
  * Address PR comments

  westey · 2026-02-09 16:53:01 +00:00
  ad0dac3c86
• .NET: Introduce Core implementation methods for session methods on AIAgent (#3699)

  * Introduce Core implementation methods for session methods on AIAgent
  
  * Update changelog

  westey · 2026-02-06 13:25:20 +00:00
  ac17adb595
• .NET: [BREAKING] Provide agent and session to AIContextProvider & ChatHistoryProvider (#3695)

  * Add a StateBag to AgentSession and pass Agent and AgentSession to AIContextProvider and ChatHistoryProviders
  
  * Remove statebag code from this branch, to get the refactoring out of the way first
  
  * Apply suggestion from @rogerbarreto
  
  Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * Apply suggestion from @westey-m
  
  * Apply suggestion from @westey-m
  
  ---------
  
  Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>

  westey · 2026-02-05 15:58:41 +00:00
  ec82ed15d2
• .NET: [BREAKING] Remove UserInputRequests property (#3682)

  * Remove UserInputRequests property
  
  * Fix formatting issue.

  westey · 2026-02-05 12:07:07 +00:00
  aa88195dcd
• .NET: Adding AgentRunContext to allow accessing agent run info in external downstream components (#3476)

  * Add an AsyncLocal AgentRunContext
  
  * Update AgentRunContext session naming
  
  * Make AgentRunContext readonly and add ADR
  
  * Make session nullable and add unit tests
  
  * Add unit tests for setting the context in AIAgent
  
  * Apply suggestions from code review
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Fix sample in ADR
  
  * Fix broken unit test
  
  * Add unit test for checking if middleware can access AgentRunContext
  
  * Fix build error after merge.
  
  * Fix AgentRunContextTests after merge from main
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-02-05 09:45:24 +00:00
  de80543302
• .NET: [BREAKING] Rename session state json param (#3681)

  * Rename session state json param to ensure consistency
  
  * Fix merge failures and PR comments.

  westey · 2026-02-04 18:54:10 +00:00
  a2d1e69652
• .NET: Improve unit test coverage for Microsoft.Agents.AI.Abstractions (#3381)

  * Initial plan
  
  * Add unit tests to improve coverage for Microsoft.Agents.AI.Abstractions
  
  Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * Fix file encoding and naming rule violation in new test files
  
  Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * Remove ChatMessageStoreExtensionsTests.cs to avoid duplication with Wesley's work
  
  Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * Fix AgentThread to AgentSession rename in unit tests
  
  Update MockAgentWithName in AIAgentTests.cs and DelegatingAIAgentTests.cs
  to use the renamed AgentSession class and corresponding methods:
  - AgentThread -> AgentSession
  - GetNewThreadAsync -> GetNewSessionAsync
  - DeserializeThreadAsync -> DeserializeSessionAsync
  - thread parameter -> session parameter
  
  * Fix: Rename GetNewSessionAsync to CreateSessionAsync to match API changes
  
  * Fix: Add SerializeSession override and remove async from DeserializeSessionAsync
  
  ---------
  
  Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
  Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>

  Copilot · 2026-02-04 17:43:31 +00:00
  e8902c0d11
• .NET: [BREAKING] Move AgentSession.Serialize to AIAgent (#3650)

  * 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

  westey · 2026-02-04 15:52:15 +00:00
  6255abd687
• .NET: [BREAKING] Rename GetNewSession to CreateSession (#3501)

  * Rename GetNewSession to CreateSession
  
  * Address copilot feedback
  
  * Suppress warning
  
  * Suppress warning
  
  * Fix further warnings.

  westey · 2026-02-03 11:33:50 +00:00
  6fdf6111e6
• .NET: [BREAKING] Rename AgentThread to AgentSession (#3430)

  * Rename AgentThread to AgentSession
  
  * Add more renames
  
  * Update readme files
  
  * Revert nullable variable change and further fixes.
  
  * Revert change in header name
  
  * Fix some comments and tests
  
  * Update changelog.
  
  * Address PR feedback.
  
  * Fixing code review comments.
  
  * Fix new errors after merging latest code.

  westey · 2026-01-26 16:30:25 +00:00
  a3a9147e61
• .NET: Rename ChatMessageStore to ChatHistoryProvider (#3375)

  * Rename ChatMessageStore to ChatHistoryProvider
  
  * Fix merge issue
  
  * Fixed PR comments
  
  * Fix tests after property rename
  
  * Add unit tests and fix merge issues
  
  * Fix encoding

  westey · 2026-01-23 15:49:01 +00:00
  21e00c054b
• .NET: Allow overriding the ChatMessageStore to be used per agent run. (#3330)

  * Allow overriding the ChatMessageStore to be used per agent run.
  
  * Fix typos
  
  * Fix Add and add TryAdd, Contains and Remove

  westey · 2026-01-23 12:44:29 +00:00
  90164a6bc1
• .NET: Update Microsoft.Extensions.AI.* packages to 10.2.0 (#3211)

  * Initial plan
  
  * Update Microsoft.Extensions.AI.* to 10.2.0 and fix timestamp behavior tests
  
  Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
  Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

  Copilot · 2026-01-20 17:52:58 +00:00
  742937194a
• .NET: [Breaking] RenameAgentRunResponse and AgentRunResponseUpdate classes (#3197)

  * rename AgentRunResponse and AgentRunResponseUpdate classes - part1
  
  * rename varialbles, parameters, methods and tests
  
  * rollback unnecessary changes

  SergeyMenshykh · 2026-01-14 10:27:41 +00:00
  c70e594e6c
• .NET: [BREAKING] Change GetNewThread and DeserializeThread to async (#3152)

  * Change GetNewThread and DeserializeThread plus ChatMessageStore and AIContextProvider Factories to async
  
  * Merge fixes

  westey · 2026-01-12 11:25:51 +00:00
  bb6ecd9c71
• .NET: [Breaking] Prevent loss of input messages & streamed updates when resuming streaming (#2748)

  * save input messages and stream updates to the continuation token to be able to use them in the last successful stream resumption call.
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgentContinuationToken.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgentContinuationToken.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/tests/Microsoft.Agents.AI.UnitTests/ChatClient/ChatClientAgent_BackgroundResponsesTests.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgentContinuationToken.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgentContinuationToken.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * fix typo
  
  * init continuation token from chat response
  
  * remove unnecessary types for source generation
  
  * remove check for continuation token passed at initial run
  
  * remove check for continuation token pass at initial run
  
  * centralize continuation token parsing
  
  * update xml comments
  
  * use readonly collection instead of enumerable
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  SergeyMenshykh · 2026-01-08 17:31:13 +00:00
  7aa72f6fdb
• .NET: Seal factory contexts and add non JSO deserialize overloads (#3066)

  * Seal factory contexts and add non JSO deserialize overloads
  
  * Apply suggestions from code review
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

  westey · 2026-01-07 11:40:39 +00:00
  dd69cabc67
• .NET: [BREAKING] Refactor ChatMessageStore methods to be similar to AIContextProvider and add filtering support (#2604)

  * Refactor ChatMessageStore methods to be similar to AIContextProvider
  
  * Fix file encoding
  
  * Ensure that AIContextProvider messages area also persisted.
  
  * Update formatting and seal context classes
  
  * Improve formatting
  
  * Remove optional messages from constructor and add unit test
  
  * Add ChatMessageStore filtering via a decorator
  
  * Update sample and cosmos message store to store AIContextProvider messages in right order. Fix unit tests.
  
  * Update Workflowmessage store to use aicontext provider messages.
  
  * Apply suggestions from code review
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Apply suggestions from code review
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Improve xml docs messaging
  
  * Address code review comments.
  
  * Also notify message store on failure
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>

  westey · 2026-01-05 11:51:15 +00:00
  3ef67eff10
• .NET: [Breaking] Introduce RunCoreAsync/RunCoreStreamingAsync delegation pattern in AIAgent (#2749)

  * Initial plan
  
  * Refactor AIAgent: Make RunAsync and RunStreamingAsync non-abstract, add RunCoreAsync and RunCoreStreamingAsync
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Fix infinite recursion in test implementations
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Make RunAsync and RunStreamingAsync non-virtual as requested
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Fix DelegatingAIAgent subclasses to use RunCoreAsync/RunCoreStreamingAsync
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Fix XML documentation references in AnonymousDelegatingAIAgent
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Restore <see cref> tags with proper qualified signatures in AnonymousDelegatingAIAgent
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Rollback unnecessary XML documentation changes in AnonymousDelegatingAIAgent
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Remove pragma and update crefs to RunCoreAsync/RunCoreStreamingAsync
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * Fix EntityAgentWrapper to call base.RunCoreAsync/RunCoreStreamingAsync
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  
  * fix compilation issues
  
  * fix compilatio issue
  
  * fix tests
  
  * fix unit tests
  
  * fix unit test
  
  ---------
  
  Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
  Co-authored-by: SergeyMenshykh <sergemenshikh@gmail.com>
  Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>

  Copilot · 2025-12-30 12:24:09 +00:00
  8b4f7d5e29
• .NET: [BREAKING] Prevent nulls in AIAgent property (#2719)

  * prevent nulls in AIAgent property
  
  * address feedback

  SergeyMenshykh · 2025-12-11 09:50:25 +00:00
  989b6ebe71
• Remove unnecessary PackageReferences after .NET 10 update (#2394)

  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>

  Stephen Toub · 2025-12-04 00:09:51 +00:00
  9c2e800189
• [BREAKING] Remove NotifyThreadOfNewMessagesAsync AIAgent helper (#2450)

  * Remove NotifyThreadOfNewMessagesAsync helper from AIAgent
  
  * Fix bug
  
  * Update comment

  westey · 2025-11-25 11:59:26 +00:00
  b6c3b8d3f2
• .NET: Change type of props representing continuation token (#2430)

  * change type of props representing continuation token
  
  * use explict cast instead of the as operator

  SergeyMenshykh · 2025-11-25 09:59:43 +00:00
  a89c15d6e6
• Update to latest MEAI 10.0.1 and OpenAI 2.7.0 (#2392)
  Stephen Toub · 2025-11-24 13:51:27 +00:00
  a116edaf5a
• .NET: Upgrade to .NET 10 (#2128)

  * Upgrade to .NET 10
  
  - Require .NET 10 SDK
  - Include net10.0 assets in all assemblies
  - Move net9.0-only targets to net10.0
  - Update LangVersion to latest
  - Remove complicated distinctions between debug target TFMs and release target TFMs
  - Remove unnecessary package dependencies when built into netcoreapp
  - Clean up some ifdefs
  - Clean up some analyzer warnings
  
  * Fix CI

  Stephen Toub · 2025-11-22 04:14:15 +00:00
  dc2b109b50
• Fix InMemoryChatMessageStore serialization bug. (#2185)
  westey · 2025-11-13 15:43:01 +00:00
  f273ca7353
• .NET: Allow extending agent run options via additional properties (#1872)

  * Allow extending agent run options via additional properties
  
  This mirrors the M.E.AI model in ChatOptions.AdditionalProperties which is very useful when building functionality pipelines.
  
  Fixes https://github.com/microsoft/agent-framework/issues/1815
  
  * Expand XML documentation
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Add AdditionalProperties tests to AgentRunOptions
  
  Co-authored-by: kzu <169707+kzu@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
  Co-authored-by: kzu <169707+kzu@users.noreply.github.com>

  Daniel Cazzulino · 2025-11-11 20:00:59 +00:00
  180f82373b
• .NET: Fix the ordering of chained resolvers in JsonSerializerOptions (#1974)

  * Fix the ordering of chained resolvers in JsonSerializerOptions
  
  We want the resolvers from AIJsonUtilities to be used before the ones from the source generator, in case the source generator emits its own copy in that assembly for the M.E.AI types.
  
  * Apply suggestions from code review
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI/AgentJsonUtilities.cs
  
  * Update dotnet/src/Microsoft.Agents.AI.Mem0/Mem0JsonUtilities.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * Remove unused using directive in Mem0JsonUtilities
  
  Removed unused using directive for Microsoft.Extensions.AI.
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>

  Stephen Toub · 2025-11-06 22:23:37 +00:00
  820c6afe09
• .NET: [BREAKING] Fix issue where AIContextProvider messages were not added to MessageStores (#1788)

  * Fix issue where AIContextProvider messages were not added to MessageStores
  
  * Fix typos
  
  * Update XML docs to reduce ambiguity.
  
  * Update AIContext XML docs
  
  * Fix merge issue

  westey · 2025-10-30 11:55:48 +00:00
  fb7086b2e0
• .NET: Add support for background responses (#1501)

  * add support for background responses
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AgentRunResponseUpdate.cs
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  
  * fix broken link
  
  * fix xml comments and background responses properties override funcitonity
  
  * change ai model provider
  
  * use Run{Streaming}Async overloads that don't require messages
  
  * stop using m: prefix in cref attribute of <see/> element.
  
  * reject input messages provided with continuation token + don't extract messages from message store and context provide if continuation token is provided
  
  * use agent thread for background-responses sample
  
  * require agent thread for background responses
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgent.cs
  
  Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI/ChatClient/ChatClientAgent.cs
  
  Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  
  * remove CA1200
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AgentRunOptions.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AgentRunResponse.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * Update dotnet/src/Microsoft.Agents.AI.Abstractions/AgentRunResponse.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  * address pr review comments
  
  * Update dotnet/samples/GettingStarted/Agents/Agent_Step17_BackgroundResponses/Program.cs
  
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>
  
  ---------
  
  Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
  Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
  Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>

  SergeyMenshykh · 2025-10-22 17:43:57 +00:00
  1bf520a7c2
• Force source generation tests in .net core (#1298)
  westey · 2025-10-17 14:58:50 +00:00
  e7a9128138
• Update to M.E.AI 9.10 (#1461)

  And other System.*/Microsoft.Extensions.* updated today
  
  Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>

  Stephen Toub · 2025-10-15 08:33:33 +00:00
  ab450078ab
• Removing duplicating update coalescing logic in AgentRunResponseExtensions (#1169)
  Stephen Toub · 2025-10-07 13:42:01 +00:00
  959e5842c2
• Fix createdAt merging for agent run updates (#1161)
  westey · 2025-10-03 16:04:06 +00:00
  3ee7461b59
• Tweak AgentAbstractionsJsonUtilities to better match AIJsonUtilities (#1094)

  Functional change includes setting the encoder used by the options and employing JsonStringEnumConverter.

  Stephen Toub · 2025-10-02 05:19:27 +00:00
  3ae9065b6b
• .NET: Re-enable ImplicitUsings in samples and clean up NoWarns (#1060)

  * Re-enable ImplicitUsings in samples and clean up NoWarns
  
  * Fix dotnet format
  
  * More dotnet format
  
  * More dotnet format
  
  ---------
  
  Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>

  Stephen Toub · 2025-10-01 19:37:03 +00:00
  a414461570
• .NET: Make serialize methods sync and rename one to match others. (#946)

  * Make serialize methods sync and rename one to match others.
  
  * Remove unnecessary async postfixes.
  
  * Remove nullability of ChatMessageStore.Serialize return type, since the default JsonElement already represents an undefined json element.
  
  * Fix unit test

  westey · 2025-09-29 09:32:01 +00:00
  bf5931932e