agent-framework

.NET: Fixing issue where OpenTelemetry span is never exported in .NET in-process workflow execution (#4196 )

* 1. Add reproduction test for issue #4155: workflow.run Activity never stopped in streaming OffThread path

The WorkflowRunActivity_IsStopped_Streaming_OffThread test demonstrates that
the workflow.run OpenTelemetry Activity created in StreamingRunEventStream.RunLoopAsync
is started but never stopped when using the OffThread/Default streaming execution.
The background run loop keeps running after event consumption completes, so the
using Activity? declaration never disposes until explicit StopAsync() is called.

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

2. Fix workflow.run Activity never stopped in streaming OffThread execution (#4155)

The workflow.run OpenTelemetry Activity in StreamingRunEventStream.RunLoopAsync
was scoped to the method lifetime via 'using'. Since the run loop only exits on
cancellation, the Activity was never stopped/exported until explicit disposal.

Fix: Remove 'using' and explicitly dispose the Activity when the workflow reaches
Idle status (all supersteps complete). A safety-net disposal in the finally block
handles cancellation and error paths.

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

* Add root-level workflow.session activity spanning run loop lifetime\n\nImplements two-level telemetry hierarchy per PR feedback from lokitoth:\n- workflow.session: spans the entire run loop / stream lifetime\n- workflow_invoke: per input-to-halt cycle, nested within the session\n\nThis ensures the session activity stays open across multiple turns,\nwhile individual run activities are created and disposed per cycle.\n\nAlso fixes linkedSource CancellationTokenSource disposal leak in\nStreamingRunEventStream (added using declaration)."

* Address Copilot review: fix Activity/CTS disposal, rename activity, add error tag\n\n1. LockstepRunEventStream: Remove 'using' from Activity in async iterator\n   and manually dispose in finally block (fixes #4155 pattern). Also dispose\n   linkedSource CTS in finally to prevent leak.\n2. Tags.cs: Add ErrorMessage (\"error.message\") tag for runtime errors,\n   distinct from BuildErrorMessage (\"build.error.message\").\n3. ActivityNames: Rename WorkflowRun from \"workflow_invoke\" to \"workflow.run\"\n   for cross-language consistency.\n4. WorkflowTelemetryContext: Fix XML doc to say \"outer/parent span\" instead\n   of \"root-level span\".\n5. ObservabilityTests: Assert WorkflowSession absence when DisableWorkflowRun\n   is true.\n6. WorkflowRunActivityStopTests: Fix streaming test race by disposing\n   StreamingRun before asserting activities are stopped.\n7. StreamingRunEventStream/LockstepRunEventStream: Use Tags.ErrorMessage\n   instead of Tags.BuildErrorMessage for runtime error events."

* Review fixes: revert workflow_invoke rename, use 'using' for linkedSource, move SessionStarted earlier\n\n- Revert ActivityNames.WorkflowRun back to \"workflow_invoke\" (OTEL semantic convention contract)\n- Use 'using' declaration for linkedSource CTS in LockstepRunEventStream (no timing sensitivity)\n- Move SessionStarted event before WaitForInputAsync in StreamingRunEventStream to match Lockstep behavior"

* Improve naming and comments in WorkflowRunActivityStopTests"

* Prevent session Activity.Current leak in lockstep mode, add nesting test

Save and restore Activity.Current in LockstepRunEventStream.Start() so the
session activity doesn't leak into caller code via AsyncLocal. Re-establish
Activity.Current = sessionActivity before creating the run activity in
TakeEventStreamAsync to preserve parent-child nesting.

Add test verifying app activities after RunAsync are not parented under the
session, and that the workflow_invoke activity nests under the session."

* Fix stale XML doc: WorkflowRun -> WorkflowInvoke in ObservabilityTests

---------

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

Ben Thomas · 2026-02-25 19:42:45 +00:00

425f27f989

.NET: Support InvokeMcpTool for declarative workflows (#4204 )

* Initial implementation of InvokeMcpTool in declarative workflow

* Cleaned up sample implementation

* Updated sample comments.

* Added missing executor routing attribute

* Fix PR comments.

* Updated based on PR comments.

* Updated based on PR comments.

* Removed unnecessary using statement.

Peter Ibekwe · 2026-02-25 19:21:36 +00:00

de9d886aba

[Purview] Mark responses as responses and fix epoch bug for python long overflow (#4225 )

Rishabh Chawla · 2026-02-25 18:40:36 +00:00

2e26bb9387

.NET: Add Microsoft Fabric sample #3674 (#4230 )

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

Roger Barreto · 2026-02-25 17:34:13 +00:00

e3a5b915a6

Update .NET package version to rc2 (#4257 )

- Bump RCNumber from 1 to 2
- Update GitTag to 1.0.0-rc2
- Update preview date stamps from 260219 to 260225

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

Dmytro Struk · 2026-02-25 16:53:19 +00:00

84849a24ca

.NET: Add SharePoint sample #3674 (#4227 )

Roger Barreto · 2026-02-25 16:40:18 +00:00

91675bde4f

.NET: Implement Task support for A2A Hosting package (#3732 )

* implement task support?

* some metadata + session store impl

* address PR comments x1

* API reivew

* llast changes

* More test

* remove unsued import

* fix moq override

* refactoring

* ontaskupdated

* adjust to delegate

* fix encoding

* address PR comments: rework

* init 1

* renaming

* fix tests

* fix comment

* runmode rename

* rename

* rename

* use exxperimental api, allow experimental on project level

* throw on refereceTaskIds

Korolev Dmitry · 2026-02-25 11:20:43 +00:00

2ba7ee9ce5

.NET: Fix JSON arrays of objects parsed as empty records when no schema is defined (#4199 )

* fix: use HasSchema check in DetermineElementType to prevent empty records

When parsing JSON arrays containing objects without a predefined schema,
`DetermineElementType()` was creating a `VariableType` with an empty
(non-null) schema via `targetType.Schema?.Select(...) ?? []`. This caused
`ParseRecord` to take the schema-based parsing path, iterating over zero
schema fields and silently discarding all JSON properties.

The fix checks `targetType.HasSchema` and falls back to
`VariableType.RecordType` (which has `Schema = null`) when no schema is
defined, ensuring `ParseRecord` takes the dynamic `ParseValues()` path
that preserves all JSON properties.

Closes #4195

* test: add regression tests for schema-less JSON array-of-objects parsing (#4195)

Add two regression tests to JsonDocumentExtensionsTests:

1. ParseRecord_ObjectWithArrayOfObjects_NoSchema_PreservesNestedProperties
   - Parses a JSON object containing an array of objects using
     VariableType.RecordType (no schema) and verifies that nested
     object properties (name, role) are preserved in each element.
   - This is the exact scenario from issue #4195 where objects in
     arrays were being returned as empty dictionaries.

2. ParseList_ArrayOfObjects_NoSchema_PreservesProperties
   - Parses a JSON array of objects directly via ParseList with
     VariableType.ListType (no schema) and verifies all properties
     are preserved.

Both tests follow the existing Arrange/Act/Assert pattern and would
have failed before the DetermineElementType() fix (empty dictionaries
instead of populated ones).

L. Elaine Dazzio · 2026-02-25 01:02:43 +00:00

2ad0caf069

.NET: Add Foundry Agents Tool Sample - Bing Custom Search (#3701 )

* .NET: Add Bing Custom Search sample #3674

* Apply format fixes

* .NET: Improve Bing Custom Search sample with dual MEAI/Native SDK options

- Add MEAI (Option 1) and Native SDK (Option 2) agent creation patterns
- Add DefaultAzureCredential with standard WARNING comment
- Add sample to solution file and FoundryAgents README index
- Improve README with connection ID/instance name guidance
- Fix missing newline at EOF in .csproj
- Suppress CS8321 for unused local function pattern

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

* Address PR review comments for Bing Custom Search sample

- Add Async suffix to CreateAgentWithMEAI and CreateAgentWithNativeSDK methods
- Clarify comment to reference ResponseTool instead of BingCustomSearchTool
- Update README Option 1 description to accurately reflect SDK usage

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

---------

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

Roger Barreto · 2026-02-24 14:57:16 +00:00

9a7d93909d

.NET: Fix case-sensitive property mismatch in CosmosChatHistoryProvider queries (#3485 )

* Initial plan

* Fix case-sensitivity bug in Cosmos queries and add tests

Co-authored-by: markwallace-microsoft <127216156+markwallace-microsoft@users.noreply.github.com>

* Fix style issues and update tests for new API

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: markwallace-microsoft <127216156+markwallace-microsoft@users.noreply.github.com>
Co-authored-by: westey <164392973+westey-m@users.noreply.github.com>

Copilot · 2026-02-23 18:27:21 +00:00

69eabcd1fc

.NET: Add Foundry Agents Tool Sample - Web Search (#4040 )

* .NET: Add Web Search sample #3674

* .NET: Fix WebSearch sample to use Responses API built-in web search

Remove incorrect Bing Grounding connection ID requirement from the
WebSearch sample. The web search tool uses the OpenAI Responses API
built-in capability and does not need a connection ID.

- Remove AZURE_FOUNDRY_BING_CONNECTION_ID env var requirement
- Use HostedWebSearchTool() without connectionId properties
- Refactor creation options into local functions (MEAI + NativeSDK)
- Switch from AzureCliCredential to DefaultAzureCredential
- Update README to reflect correct prerequisites

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

* Fix README to align DefaultAzureCredential docs with code

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

* Address review: add project to solution, README, simplify response text

- Add FoundryAgents_Step25_WebSearch to agent-framework-dotnet.slnx
- Add web search sample entry to parent FoundryAgents README.md
- Simplify text response extraction to use response.Text directly

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

* Fix merge conflict in slnx solution file

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

---------

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

Roger Barreto · 2026-02-23 17:15:02 +00:00

8b69c2ea12

Make Cosmos DB tests read COSMOSDB_ENDPOINT and COSMOSDB_KEY from environment variables (#4156 )

* Initial plan

* Make Cosmos DB tests read COSMOSDB_ENDPOINT and COSMOSDB_KEY from environment variables

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

* Rename EmulatorEndpoint/EmulatorKey static fields to use s_ prefix convention

Co-authored-by: crickman <66376200+crickman@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>

Copilot · 2026-02-23 16:44:31 +00:00

66dbef3e51

.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: Add Foundry Agents Tool Sample - Memory Search (#3700 )

* .NET: Add Memory Search sample #3674

* Apply format fixes

* Add MemorySearch sample to solution, FoundryAgents and AgentWithMemory READMEs

- Add FoundryAgents_Step26_MemorySearch.csproj to agent-framework-dotnet.slnx
- Add Memory Search entry to FoundryAgents/README.md samples table
- Add cross-reference from AgentWithMemory/README.md to MemorySearch sample

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

---------

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

Roger Barreto · 2026-02-23 14:54:05 +00:00

6e4562e354

.NET: Simplify store=false scenario for responses (#4124 )

* Simplify store=false scenario for responses

* Mark AsIChatClientWithStoredOutputDisabled as Experimental

westey · 2026-02-23 12:24:32 +00:00

060d8fcadd

.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

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>

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

7ba636d642

.NET: Fix failing vision integration tests by using local test files (#4128 )

* Initial plan

* Fix failing vision integration tests by using local test files

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

* Fix net472 build error: replace File.ReadAllBytesAsync with compatible helper using AppContext.BaseDirectory

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

* Simplify ReadLocalFile: return byte[] directly instead of Task<byte[]>

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>

Copilot · 2026-02-20 15:15:26 +00:00

06c6ec052e

Replace inline string literals with constants in ChatHistoryMemoryProvider (#4096 )

Extract 11 private const string fields for vector store property names
(Key, Role, MessageId, AuthorName, ApplicationId, AgentId, UserId,
SessionId, Content, CreatedAt, ContentEmbedding) and replace all inline
usages across the collection definition, store dictionary, search result
access, and filter expressions.

Fixes #3801

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

westey · 2026-02-20 12:00:21 +00:00

b3ac4777ba

.NET: Add Foundry Memory Context Provider (#3522 )

* Add Azure AI Foundry Memory Context Provider with unit tests

* Add FoundryMemory integration tests and sample application

* Fix ClearStoredMemoriesAsync to handle 404 gracefully and rename to EnsureStoredMemoriesDeletedAsync

* Refactor FoundryMemory: simplify architecture and add memory store creation

- Remove IFoundryMemoryOperations interface (was only for test mocking)
- Remove AIProjectClientMemoryOperations wrapper class
- Provider now directly uses AIProjectClient with internal extension methods
- Extension methods return actual response models instead of extracted values
- Remove WaitForUpdateCompletionAsync from provider (sample uses delay)
- Simplify EnsureMemoryStoreCreatedAsync to return Task instead of Task<bool>
- Add memory store creation with chat_model and embedding_model
- Add UpdateMemoriesResponse with SupersededBy and Error fields
- Simplify unit tests to focus on constructor validation and serialization
- Update sample to use simple delay for memory processing wait

* Add waiting operation for memory store updates

* Fix UTF-8 BOM encoding for FoundryMemory csproj files

* Update copilot instructions for UTF-8 BOM and fix sample API rename

* Fix UTF-8 BOM encoding for TestableAIProjectClient.cs

* Add missing response headers for TS

* Changing default embedding

* Using the SDK Models

* Program update

* Remove debugging code from sample

* Adapt FoundryMemoryProvider to new AIContextProvider API and add UTF-8 BOM instruction

- Override ProvideAIContextAsync/StoreAIContextAsync instead of removed virtual InvokingAsync/InvokedAsync
- Use ProviderSessionState<State> for session-scoped state management (matching Mem0Provider pattern)
- Replace constructor-based scope with stateInitializer delegate
- Remove Serialize method (no longer on base class)
- Add SearchInputMessageFilter, StorageInputMessageFilter, StateKey to options
- Update sample to use AIContextProviders list instead of AIContextProviderFactory
- Update unit and integration tests for new API
- Add UTF-8 BOM encoding and --tl:off instructions to dotnet/AGENTS.md

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

* Use DefaultAzureCredential in Foundry Memory sample

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

* Address PR review comments for FoundryMemoryProvider

- Move memoryStoreName from options to required constructor parameter
- Make FoundryMemoryProviderScope require non-null/whitespace scope in constructor
- Make Scope property read-only (getter only)
- Replace ConcurrentQueue with single last update ID to fix memory leak
- Only clear pending update ID after successful completion
- Add delete success logging
- Mark FoundryMemoryProvider with [Experimental] attribute
- Update unit tests for new API signatures

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

* Use Throw.IfNullOrWhitespace for scope and memoryStoreName validation

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

---------

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

Roger Barreto · 2026-02-20 11:25:06 +00:00

0e2fcb1c7f

.NET: [BREAKING] Workflows API Review Naming Changes (Part 1?) (#4090 )

* refactor: Normalize Run/RunStreaming with AIAgent

* refactor: Clarify Session vs. Run -level concepts

* Rename RunId to SessionId to better match Run/Session terminology in AIAgent
* [BREAKING]: Will break existing checkpointed sessions in CosmosDb due to field rename

* refactor: Rename and simplify interface around getting typed data out of ExternalRequest/Response

* Also adds hints around using value types in PortableValue

* refactor: Rename AddFanInEdge to AddFanInBarrierEdge

This will prevent a breaking change later when we introduce a programmable FanIn edge, analogous to the FanOut edge's EdgeSelector.

The goal, in the long run is to support a number of different FanIn scenarios, with naive FanIn (no barrier) by default, similar to FanOut.

* refactor: AsAgent(this Workflow, ...) => AsAIAgent(...)

* misc - part1: SwitchBuilder internal

---------

Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>

Jacob Alber · 2026-02-20 02:05:18 +00:00

0086d38f58

.NET: Small fixes in README (#4099 )

* Small fixes in README

* Disabled problematic test

* Disabled problematic test

Dmytro Struk · 2026-02-20 01:25:46 +00:00

5fd260e11d

.NET: Remove FunctionCalls and Tool Messages from Handoff passed messages (#3811 )

* Fix handoff orchestration not passing user message to handoff target agent (#3161)

Filter out internal handoff function call and tool result messages before
passing conversation history to the target agent's LLM. These messages
confused the model into ignoring the original user question.

* Add handoff tool call filtering behavior and enhance workflow builder

- Introduced HandoffToolCallFilteringBehavior enum to specify filtering behavior for tool call contents in handoff workflows.
- Updated HandoffsWorkflowBuilder to support customizable handoff instructions and tool call filtering behavior.
- Enhanced HandoffAgentExecutor to utilize new filtering options for improved message handling during agent handoffs.

* Enhance handoff message filtering logic and add unit tests for filtering behaviors

* Refactor HandoffMessagesFilter to remove unused handoff function names and enhance filtering logic for non-handoff function calls

* Refactor HandoffMessagesFilter to streamline FilterCandidateState initialization and improve clarity

* Refactor HandoffMessagesFilter to improve filtering logic and add integration tests for handoff workflows

* fix: HandoffAgentExecutor tests

Jacob Alber · 2026-02-19 19:55:12 +00:00

2cb4137501

.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: Add tweaks to .net agent skills (#4081 )

* Add tweaks to .net agent skills

* Address PR feedback

westey · 2026-02-19 17:57:49 +00:00

7f606a2e3a

.NET: Updated package versions for RC release (#4067 )

* Updated package versions for RC release

* Resolved comment

* Resolved comments

Dmytro Struk · 2026-02-19 17:18:01 +00:00

6c32e869dd

[BREAKING] .NET: Decouple Checkpointing from Run/StreamAsync APIs (#4037 )

* [BREAKING] refactor: Decouple Checkpointing and Execution APIs

With this change, Checkpointing becomes an property of an IWorkflowExecutionEnvironment. This lets environments that are tightly-coupled to their CheckpointManager avoid needing to present APIs that would not work (e.g. taking in an InMemory CheckpointManager for Durable Tasks, for example)

* refactor: Normalize IsCheckpointingEnabled naming

Jacob Alber · 2026-02-19 16:41:35 +00:00

c73bd87503

.NET: Add Foundry Agents Tool Sample - OpenAPI Tools (#3702 )

* .NET: Add OpenAPI Tools sample #3674

* Apply format fixes

* Add MEAI and Native SDK creation options for OpenAPI Tools sample

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

* Address PR review: DefaultAzureCredential and CS8321 in NoWarn

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

* Add project to slnx

---------

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

Roger Barreto · 2026-02-19 15:49:04 +00:00

a54afd5e6c

Update AdditionalAIContext sample with simplified implementation (#4039 )

westey · 2026-02-19 14:41:25 +00:00

93bcc4a9c2

Fix CheckpointInfo.Parent always null in InProcessRunner (#3796 ) (#3812 )

Track the last CheckpointInfo in InProcessRunner so that newly created
checkpoints reference their parent. When resuming from a checkpoint,
the resumed-from checkpoint becomes the parent of the next checkpoint.

Adds tests verifying:
- First checkpoint has null parent
- Subsequent checkpoints chain parents correctly
- Checkpoint after resume references the resumed-from checkpoint

Jacob Alber · 2026-02-19 14:34:58 +00:00

3507b2c532

.NET: [BREAKING] Implement Polymorphic Routing (#3792 )

* feat: Implement Polymorphic Routing

* feat: Add support for Send/Yield annotations with basic Executor

* Adds annotations to Declarative workflow executors

* fix: Address PR Comments

* Implicit filter in collection loops
* Remove debug / usused / superfluous code
* Fix ProtocolBuilder implicit output registrations
* Fix logic error in ExecuteRouteGeneratorTests.ClassWithManualConfigureProtocol_DoesNotGenerate

* fix: Solidify type checks and send/yield type registrations

* fix: Suppress generation of TurnTokens out of AggregateTurnMessagesExecutor

* Fixes an issue where ConcurrentEndExecutor is not expecting TurnTokens.

* fix: Add ProtocolBuilder support for chained-delegation

* Updates Declarative pacakge to rely on chained-delegation Send/Yield registration
* Renames DeclarativeActionExectuor's new ExecuteAsync to ExecuteActionAsync to avoid colliding with Executor.ExecutoeAsync

* fix: Address PR Comments

* Fixes type mapping in FanInEdgeRunner
* Fixes and expalins send/yield type registration in FunctionExecutor

* fixup: build-break

* fix: Add missing SendsMesage declaration to InvokeAzureAgentExecutor

Jacob Alber · 2026-02-19 14:09:03 +00:00

6a3d22598f

.NET: Fixes AgentWithHostedMCP chat fails: ErrorHTTP 404 (: 404) Resource not found (#3856 )

* Update packages

* Fix run-request.http format

Roger Barreto · 2026-02-19 10:40:27 +00:00

3ea9c5fa5d

.NET: Add File Search Sample for Foundry Agents. (#3990 )

* .NET: Add File Search sample #3674

* Add FileSearch sample to solution and parent README

- Add FoundryAgents_Step18_FileSearch to agent-framework-dotnet.slnx
- Add FileSearch entry to FoundryAgents samples table in README.md
- Fix README inaccuracy: sample creates one agent, not two

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

* Refactor FileSearch sample: local functions + DefaultAzureCredential

- Refactor agent creation into switchable local functions
- Use DefaultAzureCredential with WARNING comment (matching other samples)
- Update README to reference DefaultAzureCredential

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

* Fix orphaned temp file in FileSearch sample

Use Path.Combine + Path.GetRandomFileName instead of Path.GetTempFileName
to avoid leaving an orphaned temp file on disk.

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

---------

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

Roger Barreto · 2026-02-19 10:36:43 +00:00

5aa05ebe29

.NET: Fix FoundryAgents_Step15_ComputerUse sample for Azure Agents API (#3989 )

* Fix FoundryAgents_Step15_ComputerUse sample for Azure Agents API

The Azure Agents API rejects previous_response_id alongside computer_call_output
items, unlike the vanilla OpenAI Responses API. This fix:

- Send all prior response output items (reasoning, computer_call, etc.) as input
  items in follow-up calls so the API has full conversation context
- Create a fresh session per call to avoid ConversationId/previous_response_id
- Use currentCallId instead of initialCallId for computer_call_output
- Clear ContinuationToken after polling to prevent stale tokens
- Remove unused initialCallId tracking variable

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

* Address comments

---------

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

Roger Barreto · 2026-02-19 08:28:00 +00:00

c3eca2567a

.NET: Support InvokeFunctionTool for declarative workflows (#4014 )

* Initial Implementation of InvokeFunctionTool

* Added unit test for InvokeFunctionTool executor.

* Implemented unit and integration tests for InvokeFunctionTool.

* Add sample for InvokeFunctionTool in declarative workflows.

* Remove unused sample and updated comments.

* Updating to official OM release with InvokeFunctionTool

* Fix formatting issues.

* Updated PowerFx version

* Update test fixture

* Cleanup - Removed unused method in InvokeFunctionToolExecutor

* Update test based on PR feedback.

* Update based on PR comments

Peter Ibekwe · 2026-02-18 23:15:36 +00:00

988ef6a50e

.NET: BREAKING: Unify AgentResponse[Update] events as WorkflowOutputEvents (#3441 )

* Rename WorkflowOutputEvent.SourceId to ExecutorId for Python consistency

- Rename SourceId property to ExecutorId in WorkflowOutputEvent
- Add [Obsolete] SourceId property for backward compatibility
- Update all test usages to use ExecutorId

Resolves part of #2938

* Unify AgentResponse events with WorkflowOutputEvent (#2938)

- Change AgentResponseEvent and AgentResponseUpdateEvent to inherit from
  WorkflowOutputEvent instead of ExecutorEvent
- Update AIAgentHostExecutor and HandoffAgentExecutor to use YieldOutputAsync()
  instead of AddEventAsync() for agent outputs
- Add special-casing in InProcessRunnerContext.YieldOutputAsync() to create
  specific event types for AgentResponse and AgentResponseUpdate, bypassing
  OutputFilter for backwards compatibility
- Update TestRunContext and TestWorkflowContext with same special-casing
- Add regression tests in AgentEventsTests

* refactor: Seal AgentResponse events

Jacob Alber · 2026-02-18 18:55:26 +00:00

6a39d5a652

Fix MCP samples: update MCP SDK to 0.8.0-preview.1 and fix README references (#3959 )

- Update ModelContextProtocol NuGet package from 0.4.0-preview.3 to 0.8.0-preview.1
- Update System.Net.ServerSentEvents from 10.0.1 to 10.0.3
- Fix OAuth config to use DynamicClientRegistration in Agent_MCP_Server_Auth
- Fix incorrect sample name references in README files

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

SergeyMenshykh · 2026-02-18 13:53:44 +00:00

f9f630829a

.NET: Add Foundry Evaluation samples (Safety + Quality) (#3697 )

* Initial plan

* Add Foundry evaluation samples for Red Teaming and Self-Reflection

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

* Refactor evaluation samples with real implementations in local functions

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

* Uncomment function signatures and bodies, keep only invocations commented

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

* Update Foundry evaluation samples with observability support

* Restructure evaluation samples to follow FoundryAgents naming convention

- Rename Evaluation/Evaluation_StepXX to FoundryAgents_Evaluations_StepXX
- Add evaluation projects to slnx
- Fix var usage, apply dotnet format, use DefaultAzureCredential
- Add try/finally for agent cleanup
- Fix evaluator deployment name separation in Step02
- Update README references

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

* Rewrite Step01 to use Azure.AI.Projects RedTeam API and address review comments

- Replace safety evaluator sample with actual Red Teaming using AIProjectClient.RedTeams
- Use AttackStrategy (Easy, Moderate, Jailbreak) and RiskCategory from Azure.AI.Projects
- Remove Microsoft.Extensions.AI.Evaluation.Safety dependency from Step01
- Add DefaultAzureCredential warning comments to Step02
- Remove unused bestResponse variable in Step02
- Add session isolation comments in self-reflection loop
- Fix stale directory references in READMEs
- Fix misleading evaluation overview link in main README

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

* Add note about agent-targeted red teaming limitations in README

The .NET RedTeam API currently only supports model deployment targets
via AzureOpenAIModelConfiguration. Agent-targeted red teaming with
AzureAIAgentTarget is documented in concept docs but not yet available
in the SDK's RedTeam constructor. Results appear in classic portal view.

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

* Add classic Foundry disclaimer to red teaming sample README

Clarify that this sample uses the classic Azure AI Foundry red teaming
API (/redTeams/runs). The new Foundry portal uses a separate evaluation-
based API not yet available in the .NET SDK. AzureAIAgentTarget exists
in the SDK but is consumed by the Evaluation Taxonomy API, not RedTeam.

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

* Address PR review comments on Step02 SelfReflection

- Pass full prompt (with context) to evaluator messages instead of just
  the question, so evaluator input matches what the agent received
- Include previous response text in self-reflection refinement prompt
  so the LLM can meaningfully improve its answer across iterations
- Inline CreateKnowledgeAgent helper (single use, single statement)
- Add comment clarifying why RunCombinedQualityAndSafetyEvaluation
  intentionally passes only the question (no context)

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

---------

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Copilot · 2026-02-18 13:52:26 +00:00

4b3df9ad89

.NET: Inline private RunCoreAsync into the protected one (#3928 )

* inline private RunCoreAsync into the protected one

* minor improvement

SergeyMenshykh · 2026-02-18 12:43:01 +00:00

a97e42a989

.NET: Disable intermittently failing AzureAIAgentsPersistent integration tests (#3997 )

* Disable intermittently failing AzureAIAgentsPersistent integration tests

Skip three StructuredOutputRunTests tests that fail intermittently:
- RunWithGenericTypeReturnsExpectedResultAsync
- RunWithPrimitiveTypeReturnsExpectedResultAsync
- RunWithResponseFormatReturnsExpectedResultAsync

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

* Update dotnet/tests/AzureAIAgentsPersistent.IntegrationTests/AzureAIAgentsPersistentStructuredOutputRunTests.cs

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

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

SergeyMenshykh · 2026-02-18 12:41:40 +00:00

9511c414f4

.NET: Update Microsoft.Agents.ObjectModel packages to 2026.2.2.1 (#4003 )

* Initial plan

* Update Microsoft.Agents.ObjectModel packages to version 2026.2.2.1

Co-authored-by: peibekwe <109177538+peibekwe@users.noreply.github.com>

---------

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Copilot · 2026-02-17 19:20:36 +00:00

09b219c009

.NET: Add additional build, test and project structure skills (#3987 )

* Add additional build, test and project structure skills

* 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 · 2026-02-17 18:27:53 +00:00

a5f948c215

.NET Workflows - Add unit tests for QuestionExecutor (#3892 )

* Initial plan

* Add comprehensive unit tests for QuestionExecutor

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

* Address code review feedback and add additional test for default value logic

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

* Checkpoint

* Polished

---------

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Copilot · 2026-02-17 18:23:12 +00:00

79b4680cec

Add dotnet.automaticallySyncWithActiveItem to VS Code settings (#3992 )

Enable automatic synchronization with the active item in VS Code for better
developer experience when working with .NET projects.

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

SergeyMenshykh · 2026-02-17 17:00:29 +00:00

6fa912decf

.NET Workflows - Add unit tests for ConditionGroupExecutor (#3893 )

* Initial plan

* Add ConditionGroupExecutorTest with comprehensive test coverage

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

* Address code review feedback - extract reflection helper and improve comments

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

* Ready

* Namespace

* Cleanup

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: crickman <66376200+crickman@users.noreply.github.com>
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Copilot · 2026-02-17 16:35:23 +00:00

349d645cfc

.NET Workflows - Add unit tests for RequestExternalInputExecutor (#3891 )

* Initial plan

* Add unit tests for RequestExternalInputExecutor

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

* Add CaptureResponseAsync tests - achieve 100% coverage

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

* Polish

* Review

* Update dotnet/tests/Microsoft.Agents.AI.Workflows.Declarative.UnitTests/ObjectModel/RequestExternalInputExecutorTest.cs

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

* Cleanup

---------

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

Copilot · 2026-02-17 16:34:01 +00:00

e633f208d9

.NET: Improve session cast error message quality and consistency (#3973 )

* Improve session cast error messge consistency

* Update changelog

westey · 2026-02-17 15:51:30 +00:00

08275f657b

Add bugbash fixes. (#3961 )

westey · 2026-02-17 15:10:53 +00:00

bf7056a131

Fix sample resource path resolution (#3952 )

westey · 2026-02-17 15:10:47 +00:00

dc6d0bc58b

Replace Typed Base Providers with Composition (#3988 )

westey · 2026-02-17 15:06:43 +00:00

cd4e36ebf7

713 Commits