agent-framework

.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: [Breaking] Restructure agent skills to use multi-source architecture (#4871 )

* initial commit

* address comments

* address comments

* address comments

* address  comments

* rename executor to runner to align naming with python implementation

* rename runner execute method to run method

* remove poc leftovers and fix compilation issues

* make script runner optional

* remove unnecessary pragmas

* make resources and scripts props virtual

* address comments

* update comment for name validation regex

* address comments

SergeyMenshykh · 2026-03-26 22:27:17 +00:00

0fcbe7e105

.NET: Fix bug with per-service-call persistence and approvals (#4933 )

* Fix bug with per-service-call persistence and approvals

* 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 · 2026-03-26 17:45:46 +00:00

3585581c7a

.NET: Fix ChatOptions mutation in AIContextProviderChatClient across calls (#4891 )

* Fix UseAIContextProviders tool accumulation across calls (#4864)

Clone ChatOptions before mutating it in InvokeProvidersAsync to prevent
context provider tools from accumulating when the same ChatOptions
instance is reused across multiple API calls.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: chetantoshniwal <chetantoshniwal@gmail.com>

* Apply suggestion from @westey-m

---------

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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chetantoshniwal · 2026-03-25 20:02:16 +00:00

0b2ccd6126

.NET: Persist messages during function call loop (#4762 )

* Persist messages during the Function Call Loop

* Revert version reset

* Fix bugs and improve sample

* Fix formatting issues

* Also updating conversation id during run

* Update based on ADR feedback

westey · 2026-03-25 11:53:45 +00:00

87962e53c5

.NET: Update AIContextProviders to use Microsoft.Extensions.Compliance.Redaction (#4854 )

* Update providers to use Microsoft.Extensions.Compliance.Redaction

* Fix formatting.

* Fix readme

westey · 2026-03-24 18:12:55 +00:00

2c000b032d

.NET: Update to OpenAI 2.9.1, Azure.AI.OpenAI 2.9.0-beta.1, Microsoft.Extensions.AI 10.4.0, and Azure.AI.Projects 2.0.0-beta.2 (#4613 )

* Initial plan

* Update code for Microsoft.Extensions.AI.Abstractions 10.4.0 breaking changes

- Rename FunctionApprovalRequestContent → ToolApprovalRequestContent
- Rename FunctionApprovalResponseContent → ToolApprovalResponseContent
- Rename UserInputRequestContent → ToolApprovalRequestContent
- Rename UserInputResponseContent → ToolApprovalResponseContent
- Update .FunctionCall property → .ToolCall with FunctionCallContent casts where needed
- Update .Id property → .RequestId on the renamed types
- Rename FunctionApprovalRequestEventGenerator → ToolApprovalRequestEventGenerator
- Rename FunctionApprovalResponseEventGenerator → ToolApprovalResponseEventGenerator

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Update OpenAI 2.9.1, ME.AI 10.4.0, fix breaking API changes

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Fix remaining ME.AI 10.4.0 breaking changes: MCP approval types, .Output→.Outputs

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Use pattern matching with `when` for ToolApprovalRequestContent/FunctionCallContent

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Update Azure.AI.OpenAI to 2.9.0-beta.1

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Fix remaining GetResponsesClient(model) build failures for Azure.AI.OpenAI 2.9.0-beta.1

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Address review feedback: remove redundant type checks in TestRequestAgent.cs and fix error message in AIAgentHostExecutor.cs

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Update Azure.AI.Projects to 2.0.0-beta.2 with namespace migration

- Azure.AI.Projects 2.0.0-beta.1 → 2.0.0-beta.2
- Azure.AI.Projects.OpenAI → Azure.AI.Extensions.OpenAI (transitive)
- Agent types moved to Azure.AI.Projects.Agents namespace
- AgentRecord.Versions.Latest → AgentRecord.GetLatestVersion()
- OpenAPIFunctionDefinition → OpenApiFunctionDefinition
- BingCustomSearchToolParameters → BingCustomSearchToolOptions
- MemorySearchPreviewTool.UpdateDelay → UpdateDelayInSecs
- Azure.Identity 1.17.1 → 1.19.0
- Microsoft.Identity.Client.Extensions.Msal 4.78.0 → 4.83.1

Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>

* Fix remaining type renames for Azure.AI.Projects 2.0.0-beta.2

- BrowserAutomationToolParameters → BrowserAutomationToolOptions
- MemoryUpdateOptions.UpdateDelay stays as UpdateDelay (not renamed)
- WaitForMemoriesUpdateAsync parameter order: pollingInterval before options
- AIProjectAgentsOperations → AgentsClient

Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>

* Fix format errors and OpenTelemetry test for ME.AI 10.4.0

- Remove unused 'using Azure.AI.Extensions.OpenAI' and fix import ordering
  in Agent_With_AzureAIProject/Program.cs
- Update OpenTelemetryAgentTests: gen_ai.tool.definitions is now always
  emitted regardless of EnableSensitiveData per ME.AI 10.4.0 change
  (dotnet/extensions#7346). Tool definitions are not considered sensitive.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix GetRepoFolder() to work in git worktrees

Use 'workflow-samples' directory as repo root marker instead of '.git',
which fails in worktrees (.git is a file) and also matches too early
when a '.github' folder exists in subdirectories.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix formatting: remove unused usings and fix import ordering

dotnet format applied across 59 impacted projects. Primarily removes
unnecessary 'using Azure.AI.Projects' where Azure.AI.Projects.Agents
provides all needed types, and fixes import ordering per editorconfig.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Disable AzureAIAgentsPersistent integration tests (#4769)

Azure.AI.Agents.Persistent 1.2.0-beta.9 references McpServerToolApprovalResponseContent
which was removed in ME.AI 10.4.0 (renamed to ToolApprovalResponseContent), causing
TypeLoadException at runtime. Mark all 6 test classes with IntegrationDisabled trait
until Persistent ships a version targeting ME.AI 10.4.0+.

Upstream fix: https://github.com/Azure/azure-sdk-for-net/pull/56929

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add README with compatibility note for AzureAI.Persistent (#4769)

Documents that Azure.AI.Agents.Persistent 1.2.0-beta.9 is only compatible
with ME.AI ≤10.3.0 and OpenAI ≤2.8.0 due to type renames in ME.AI 10.4.0.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix file encoding: restore UTF-8 BOM on Persistent test files

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Mark AzureAI.Persistent as IsPackable=false (#4769)

Prevent shipping until Azure.AI.Agents.Persistent targets ME.AI 10.4.0+.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Moving IsPackable after import

---------

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Copilot · 2026-03-20 14:29:29 +00:00

88ea9d08c7

.NET: Validate SkillsInstructionPrompt contains {0} placeholder in FileAgentSkillsProvider (#4642 )

* Fix FileAgentSkillsProvider accepting SkillsInstructionPrompt without {0} placeholder (#4638)

BuildSkillsInstructionPrompt validated only format-string syntax via
string.Format(template, ""), which silently accepted templates without a
{0} placeholder. The generated skills list was then dropped from the final
instructions.

Tighten validation to format with a sentinel string and verify it appears
in the output, rejecting templates that do not reference argument 0 with
an ArgumentException.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix netstandard2.0 compat and simplify prompt template validation (#4638)

- Replace string.Contains(string, StringComparison) with IndexOf for
  netstandard2.0/net472 compatibility
- Remove sentinel round-trip check; validate {0} directly on the raw
  template string using IndexOf
- Add positive test verifying custom SkillsInstructionPrompt with {0}
  is accepted and applied to output

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <copilot@github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Evan Mattson · 2026-03-19 00:18:39 +00:00

29dfcbb584

.NET Compaction - Allow developer to specify a custom formatter for ToolResultCompactionStrategy (#4667 )

* Initial plan

* Allow developer to specify custom formatter for ToolResultCompactionStrategy

Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>

* Refine shape

* Fix test expectation

* Potential fix for pull request finding

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

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
Co-authored-by: Chris Rickman <crickman@microsoft.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Copilot · 2026-03-18 19:24:43 +00:00

c9321b9028

.NET Compaction - Add AsChatReducer() extension to expose CompactionStrategy as IChatReducer (#4664 )

* Initial plan

* Add ChatStrategyExtensions.cs with AsChatReducer() extension method and tests

Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>

* Refactor message list creation in ReduceAsync method

* Remove unnecessary blank line in AsChatReducer method

* Potential fix for pull request finding

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

* Potential fix for pull request finding

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

* Fix test

---------

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Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Chris Rickman <crickman@microsoft.com>

Copilot · 2026-03-18 17:25:54 +00:00

d3d0100822

.NET Compaction - Introducing compaction strategies and pipeline (#4533 )

* Checkpoint

* Checkpoint

* Stable

* Strategies

* Updated

* Encoding

* Formatting

* Cleanup

* Formatting

* Tests

* Tuning

* Update tests

* Test update

* Remove working solution

* Add sample to solution

* Sample readyme

* Experimental

* Format

* Formatting

* Encoding

* Support IChatReducer

* Sample output formatting

* Initial plan

* Replace CompactingChatClient with MessageCompactionContextProvider

Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>

* Boundary condition

* Fix encoding

* Fix cast

* Test coverage

* Namespace

* Improvements

* Efficiency

* Cleanup

* Detect service managed conversation

* Fix namespace

* Fix merge

* Fix test expectation

* Update dotnet/src/Microsoft.Agents.AI.Abstractions/InMemoryChatHistoryProvider.cs

Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>

* Address PR comments (x1)

* Update comment

* Update comments

* Clean-up

* Format output

* Sync sample comment

* Fix condition

* Adjust data-flow

* Address comments (x2)

* Direct compaction

* Fix summarization content

* Argument check / fix count calculation

* Minor follow-up

* Diagnostics

* Minor updates

* Fix state test

* Fix sliding window perf

* Stable state keys

* Increase size computation

* Formatting

* Add README.md for Agent_Step18_CompactionPipeline sample (#4574)

* Sample comments

* Updated

* Update dotnet/src/Microsoft.Agents.AI/Compaction/MessageIndex.cs

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

* Update dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/CompactionProviderTests.cs

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

* Update dotnet/src/Microsoft.Agents.AI/Compaction/MessageIndex.cs

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

* Address copilot comments

* Fix namespace

* Comments / convensions

* Prefix `MessageGroup` and `MessageIndex`

* Fix sliding window

* Update dotnet/src/Microsoft.Agents.AI/Compaction/SummarizationCompactionStrategy.cs

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

* Update dotnet/src/Microsoft.Agents.AI.Abstractions/InMemoryChatHistoryProvider.cs

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

* Python alignment

* Fix merge

* Fix equality, readme, and sample

* Readme update and ToolResult fix

* Update dotnet/src/Microsoft.Agents.AI/Compaction/SummarizationCompactionStrategy.cs

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

* Update dotnet/samples/02-agents/Agents/Agent_Step18_CompactionPipeline/README.md

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

* Simplify readme

* Update dotnet/samples/02-agents/Agents/Agent_Step18_CompactionPipeline/README.md

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

* Remove example

* Remove unused

---------

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

Chris · 2026-03-11 00:41:39 +00:00

d3f0c33180

.NET: Improve skill name validation: reject consecutive hyphens and enforce directory name match (#4526 )

* improve skill validation

* address pr review comments

SergeyMenshykh · 2026-03-06 17:29:53 +00:00

394e9c1692

.NET: Fix filter combine logic for ChatHistoryMemoryProvider (#4501 )

* Fix filter combine logic for ChatHistoryMemoryProvider

* Replace var with explicit types in filter building code and test

Address PR review nit: use explicit types instead of var for better
readability in the filter-building logic and the new combined filter
compilation test.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix style issues

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

westey · 2026-03-06 11:59:50 +00:00

f7e4143c61

.NET: Discover skill resources from directory instead of markdown links (#4401 )

* discover resources in skills folder

* address pr review comments

* change type of AllowedResourceExtensions

* address pr review comment

SergeyMenshykh · 2026-03-04 18:37:11 +00:00

afdd1e539d

.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>

---------

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

westey · 2026-03-03 11:02:02 +00:00

945933c351

fix the issue (#4388 )

SergeyMenshykh · 2026-03-02 16:48:10 +00:00

8a18f39b36

Revert ".NET: Support hosted code interpreter for skill script execution (#4192 )" (#4385 )

This reverts commit c9cd067be6.

SergeyMenshykh · 2026-03-02 12:50:44 +00:00

26cef555ce

.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>

---------

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westey · 2026-02-26 14:16:21 +00:00

822a3eb5ea

.NET: Support hosted code interpreter for skill script execution (#4192 )

* support script execution by code interpretor

* improve the instruction prompt

* Add DefaultAzureCredential production warning to AgentSkills samples

Add the standard three-line WARNING comment about DefaultAzureCredential
production considerations to both AgentSkills sample Program.cs files,
matching the convention used in all other GettingStarted/Agents samples.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* address pr review comments

* address feedback

* rename Skill* types to FileAgentSkill* prefix for consistency

- Rename SkillFrontmatter -> FileAgentSkillFrontmatter
- Rename SkillScriptExecutor -> FileAgentSkillScriptExecutor
- Add FileAgentSkillScriptExecutionContext and FileAgentSkillScriptExecutionDetails
- Update sample, provider, loader, and tests accordingly

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* reorder usings

* use set for props initialization instead of init

* rename HostedCodeInterpreterSkillScriptExecutor

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

SergeyMenshykh · 2026-02-26 13:17:21 +00:00

c9cd067be6

.NET: Fix FunctionInvocationDelegatingAgent to preserve all AgentRunOptions properties (#4179 )

When converting base AgentRunOptions to ChatClientAgentRunOptions, the middleware
now preserves AllowBackgroundResponses, ContinuationToken, and AdditionalProperties
in addition to ResponseFormat.

Added unit test verifying all properties are preserved during the conversion.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

SergeyMenshykh · 2026-02-23 16:37:43 +00:00

892c177e93

.NET: [BREAKING] Add ChatClient decorator for calling AIContextProviders (#4097 )

* Add ChatClient decorator for calling AIContextProviders

* Format new files

* Address PR comments

* Revert problematic change

* Rename Use to UseAIContextProvider

westey · 2026-02-23 15:06:21 +00:00

e45e58108b

.NET: Support Agent Skills (#4122 )

* support agent skills

* make the new agent skill provider experimental

* Fix file encoding: add UTF-8 BOM to .cs files

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix final newline and simplify new expressions

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix broken links in Agent Skills sample README

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add null check for skillPaths parameter

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Normalize references

* normilize skill path

* address comments regarding symlink check

* address comments

* fix failing test + regex improvements

* small optimizations and improvments

* address pr review comments

* Update dotnet/src/Microsoft.Agents.AI/Skills/FileAgentSkillsProvider.cs

Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>

* address pr review comments

* address pr review comments

---------

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Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>

SergeyMenshykh · 2026-02-20 21:05:56 +00:00

7ba636d642

.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

.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.

---------

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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

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* Update dotnet/samples/GettingStarted/Workflows/_Foundational/08_WriterCriticWorkflow/Program.cs

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* Update dotnet/samples/GettingStarted/AGUI/Step05_StateManagement/Server/SharedStateAgent.cs

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* Update dotnet/samples/AGUIClientServer/AGUIDojoServer/SharedState/SharedStateAgent.cs

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* Update dotnet/samples/M365Agent/Agents/WeatherForecastAgent.cs

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---------

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* .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

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* 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

Update to M.E.AI 10.3.0 (#3822 )

Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>

Stephen Toub · 2026-02-11 17:02:07 +00:00

b52136952f

Fix streaming path to include chat history in messages sent to chat client (#3798 )

RunCoreStreamingAsync was passing inputMessagesForProviders (which lacks
chat history) to GetStreamingResponseAsync instead of
inputMessagesForChatClient (which includes chat history). This caused
streaming runs to lose conversation context on subsequent calls.

The non-streaming path (RunCoreAsync) already correctly used
inputMessagesForChatClient. This aligns the streaming path to match.

Also adds a unit test that validates chat history is included in
messages sent to the chat client during streaming on subsequent calls.

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: lokitoth <6936551+lokitoth@users.noreply.github.com>

Copilot · 2026-02-10 15:50:41 +00:00

6c37ce8450

.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: 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: [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: Pass AdditionalProperties from parent to child when exposing an agent as a FunctionTool (#3219 )

* Pass AdditionalProperties from parent to child when exposing an agent as a FunctionTool

* Rename variable to improve readability.

* 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 · 2026-01-20 18:20:08 +00:00

73761aa4a3

.NET: [BREAKING] Renamed CreateAIAgent/GetAIAgent to AsAIAgent (#3222 )

* Renamed chat client extension method

* Additional renaming

* Updated documentation

* Fixed tests

* Small fix

* Small fix

Dmytro Struk · 2026-01-15 16:01:15 +00:00

2ab859dd94

.NET: Merge AgentRunOptions.AdditionalProperties into ChatOptions.AdditionalProperties (#3184 )

* Merge AgentRunOptions.AdditionalProperties into ChatOptions.AdditionalProperties

* Fix namespace and typo.

westey · 2026-01-15 12:15:24 +00:00

3dbdecedda

.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: Add Run overloads to expose ChatClientAgentRunOptions in IntelliSense (#3115 )

* Initial plan

* Add ChatClientAgentExtensions for improved discoverability of ChatClientAgentRunOptions

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Address code review feedback - use collection expression syntax

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Apply suggestion from @westey-m

* Fix issues with Copilot implementation

* Add additional tests for structured output overloads.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

Copilot · 2026-01-08 19:25:47 +00:00

92435c6ab5

.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: Fix message ordering inconsistency when using AIContextProvider (#2659 )

* Initial plan

* Fix message ordering inconsistency when using AIContextProvider

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Revert to original message ordering: Input, AIContextProvider, Response

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Reorder messages to ChatClient to match MessageStore order: Existing, Input, AIContextProvider

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Remove redundant test methods as existing tests already verify the behavior

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>
Co-authored-by: Mark Wallace <127216156+markwallace-microsoft@users.noreply.github.com>
Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>

Copilot · 2026-01-06 15:39:42 +00:00

953fde69ac

.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

89 Commits