Abstractions forremote MCP servers; response/approval flow support via new experimental types
Function approvals via new experimental types (e.g.,ApprovalRequiredAIFunction, user input/approval request & response content).
Reasoning text streaming for OpenAI Responses ChatClient streaming.
AIFunction split into a base class to improve extensibility.
IChatReducer moved toMicrosoft.Extensions.AI.Abstractions.
Updated toOpenAI 2.4.0 andgenai standard convention 1.37.
Coalescing logic now treatsChatMessage.Role changes as new messages.
GetResponseAsync<T> now reads only thelast message (bug fix).
OpenTelemetry ChatClient/EmbeddingGenerator logsraw additional properties (no key mangling).
Fixedempty annotated text chunk handling in streaming with OpenAI Assistants.

Telemetry & Diagnostics

HTTP diagnostics logquery string params with proper redaction (emitted onurl.query).
server.address telemetry emitshost only (per OpenTelemetry semantic conventions).
Heuristics added to detectwell-known model hosts.
Resource monitoring can considerEnvironment.CpuUsage.

New Contributors

@ykumashev made their first contribution inConsider using Environment.CpuUsage in ResourceMonitoring dotnet/extensions#6696

Full Changelog:dotnet/extensions@v9.8.0...v9.9.0

9.8.0 What's Changed

Align EventId generation with M.E.Logging source-gen by @xakep139 inAlign EventId generation with M.E.Logging source-gen dotnet/extensions#6566
Add resiliency mechanism to CPU and memory utilization checks by @amadeuszl inAdd resiliency mechanism to CPU and memory utilization checks dotnet/extensions#6528
Suppress flaky test until fixed by @joelverhagen inSuppress flaky test until fixed dotnet/extensions#6568
Create a project template for an MCP server by @joelverhagen inCreate a project template for an MCP server dotnet/extensions#6547
Use dnx instead of dotnet tool exec in MCP server template README by @joelverhagen inUse dnx instead of dotnet tool exec in MCP server template README dotnet/extensions#6571
Add reporting tests that show NLP results. by @peterwald inAdd reporting tests that show NLP results. dotnet/extensions#6574
Branding updates for 9.8.0 by @joperezr inBranding updates for 9.8.0 dotnet/extensions#6573
FixConfigureEvaluationTests.ps1 script when$ConfigRoot is not supplied by @peterwald inFixConfigureEvaluationTests.ps1 script when$ConfigRoot is not supplied dotnet/extensions#6575
Refactor Resource Monitoring by @evgenyfedorov2 inRefactor Resource Monitoring dotnet/extensions#6554
Update McpServer template for 0.3.0-preview.2 by @stephentoub inUpdate McpServer template for 0.3.0-preview.2 dotnet/extensions#6578
Add container.cpu.time metric by @evgenyfedorov2 inAdd container.cpu.time metric dotnet/extensions#5806
Add netstandard2.0 compatibility to Microsoft.Extensions.Diagnostics.Testing and dependencies by @bdovaz inAdd netstandard2.0 compatibility to Microsoft.Extensions.Diagnostics.Testing and dependencies dotnet/extensions#6219
Add netstandard2.0 compatibility to Microsoft.Extensions.Telemetry and dependencies by @bdovaz inAdd netstandard2.0 compatibility to Microsoft.Extensions.Telemetry and dependencies dotnet/extensions#6218
Simplify Http.Diagnostics by @pentp inSimplify Http.Diagnostics dotnet/extensions#6174
Add netstandard2.0 compatibility to Microsoft.Extensions.Http.Resilience and dependencies by @bdovaz inAdd netstandard2.0 compatibility to Microsoft.Extensions.Http.Resilience and dependencies dotnet/extensions#6582
Ingore null loggers returned by LogProviders in ELoggerFactory by @petrroll inIngore null loggers returned by LogProviders in ELoggerFactory dotnet/extensions#6585
Merging changes from internal by @joperezr inMerging changes from internal dotnet/extensions#6588
[Logging] Fixes LogProperties and LogPropertyIgnore attributes to work if an object being logged resides in a different assembly than the logging method by @iliar-turdushev in[Logging] Fixes LogProperties and LogPropertyIgnore attributes to work if an object being logged resides in a different assembly than the logging method dotnet/extensions#6600
Add memory usage metric by @evgenyfedorov2 inAdd memory usage metric dotnet/extensions#6586
Add schema version to server.json in MCP template by @joelverhagen inAdd schema version to server.json in MCP template dotnet/extensions#6606
Merge release/9.7 into main by @joperezr inMerge release/9.7 into main dotnet/extensions#6589
Update MCP server template readme to show both VS Code and Visual Studio notes by @Copilot inUpdate MCP server template readme to show both VS Code and Visual Studio notes dotnet/extensions#6591
Update Azure Open AI package referenced by eval integration tests by @shyamnamboodiripad inUpdate Azure Open AI package referenced by eval integration tests dotnet/extensions#6609
Target .NET 8 for more stable runtime requirement by @joelverhagen inTarget .NET 8 for more stable runtime requirement dotnet/extensions#6617
Add support for new Azure AI Foundry project type for Safety evals by @shyamnamboodiripad inAdd support for new Azure AI Foundry project type for Safety evals dotnet/extensions#6621
M.E.AI.AzureAIInference - Azure.AI.Inference Package Bump by @rogerbarreto inM.E.AI.AzureAIInference - Azure.AI.Inference Package Bump dotnet/extensions#6624
Add DataContent.Name property by @stephentoub inAdd DataContent.Name property dotnet/extensions#6616
Fix handling of multiple responses messages by @stephentoub inFix handling of multiple responses messages dotnet/extensions#6627
Expose additional chat model conversion helpers by @stephentoub inExpose additional chat model conversion helpers dotnet/extensions#6629
[main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in[main] Update dependencies from dotnet/arcade dotnet/extensions#6633
[Http.Resilience] The DisableFor method should try to retrieve the request object from the resilience context by @iliar-turdushev in[Http.Resilience] The DisableFor method should try to retrieve the request object from the resilience context dotnet/extensions#6618
Bump Package validation baseline version to 9.7.0 by @Copilot inBump Package validation baseline version to 9.7.0 dotnet/extensions#6650
Fix internal package version detection for project templates by @MackinnonBuck inFix internal package version detection for project templates dotnet/extensions#6651
RemoveMicrosoft.Extensions.AI.Ollama by @MackinnonBuck inRemoveMicrosoft.Extensions.AI.Ollama dotnet/extensions#6655
Fix M.E.AI package refs by @stephentoub inFix M.E.AI package refs dotnet/extensions#6654
Add [Description] to DataContent.Uri by @stephentoub inAdd [Description] to DataContent.Uri dotnet/extensions#6615
Fix duplicate solution file when creating an AI Chat Web app from VS by @MackinnonBuck inFix duplicate solution file when creating an AI Chat Web app from VS dotnet/extensions#6653
Add ChatMessage.CreatedAt by @stephentoub inAdd ChatMessage.CreatedAt dotnet/extensions#6657
Add TextContent.Annotations by @stephentoub inAdd TextContent.Annotations dotnet/extensions#6619
Add FunctionInvokingChatClient.AdditionalTools by @stephentoub inAdd FunctionInvokingChatClient.AdditionalTools dotnet/extensions#6661
Fix unintentional test env var change by @stephentoub inFix unintentional test env var change dotnet/extensions#6660
Add more openai conversion helpers by @stephentoub inAdd more openai conversion helpers dotnet/extensions#6662
Add OriginalRepoCommitHash to assemblies by @BrennanConroy inAdd OriginalRepoCommitHash to assemblies dotnet/extensions#6667
Include a trivial items keyword if missing. by @eiriktsarpalis inInclude a trivial items keyword if missing. dotnet/extensions#6669
Add resolution of function parameter level data annotation attributes. by @eiriktsarpalis inAdd resolution of function parameter level data annotation attributes. dotnet/extensions#6671
Fix issue with NetSourceIndexStage1 for dependency conflict versions by @joperezr inFix issue with NetSourceIndexStage1 for dependency conflict versions dotnet/extensions#6672
Expose streaming conversion utility methods by @stephentoub inExpose streaming conversion utility methods dotnet/extensions#6636
Couple of fixes for MEAI.Evaluation by @shyamnamboodiripad inCouple of fixes for MEAI.Evaluation dotnet/extensions#6673
Fix one more version conflict on the docs transport package by @joperezr inFix one more version conflict on the docs transport package dotnet/extensions#6675
... (truncated)

9.7.2 Packages Released

Microsoft.Extensions.AI.Templates 9.7.2-preview.3.25366.2

What's Changed

Target .NET 8 for more stable runtime requirement by @joelverhagen in #6617

Full Changelog:dotnet/extensions@v9.7.1...v9.7.2

9.7.1 Packages Released

What's Changed

Merging changes from internal by @joperezr in #6588
Bump FunctionInvokingChatClient.MaximumIterationsPerRequest from 10 to 40 by @stephentoub in #6599
Expose M.E.AI.OpenAI input message conversions by @stephentoub in #6601
Add schema version to server.json in MCP template by @joelverhagen in #6606
Update MCP server template readme to show both VS Code and Visual Studio notes by @jeffhandley in #6591
Fix schema generation for Nullable function parameters. by @eiriktsarpalis in #6596
Branding updates for 9.7.1 by @joperezr inBranding updates for 9.7.1 dotnet/extensions#6611
Add DelegatingAIFunction by @stephentoub inAdd DelegatingAIFunction dotnet/extensions#6565
Add FunctionInvokingChatClient.FunctionInvoker delegate by @stephentoub inAdd FunctionInvokingChatClient.FunctionInvoker delegate dotnet/extensions#6564
Enable specifying "strict" for OpenAI clients via ChatOptions by @stephentoub inEnable specifying "strict" for OpenAI clients via ChatOptions dotnet/extensions#6552
AIFunctionFactory: tolerate JSON string function parameters. by @eiriktsarpalis inAIFunctionFactory: tolerate JSON string function parameters. dotnet/extensions#6572
AIFunctionFactory: add test coverage for JSON comments. by @eiriktsarpalis inAIFunctionFactory: add test coverage for JSON comments. dotnet/extensions#6576
Update M.E.AI.OpenAI for latest OpenAI release by @stephentoub inUpdate M.E.AI.OpenAI for latest OpenAI release dotnet/extensions#6577
Update OpenTelemetry semantic conventions version from 1.35 to 1.36 by @Copilot inUpdate OpenTelemetry semantic conventions version from 1.35 to 1.36 dotnet/extensions#6579
AIFunctionFactory: add a flag for disabling return schema generation. by @eiriktsarpalis inAIFunctionFactory: add a flag for disabling return schema generation. dotnet/extensions#6551
Bump FunctionInvokingChatClient.MaximumIterationsPerRequest from 10 to 40 by @stephentoub inBump FunctionInvokingChatClient.MaximumIterationsPerRequest from 10 to 40 dotnet/extensions#6599
Expose M.E.AI.OpenAI input message conversions by @stephentoub inExpose M.E.AI.OpenAI input message conversions dotnet/extensions#6601
Fix schema generation for Nullable function parameters. by @eiriktsarpalis inFix schema generation for Nullable<T> function parameters. dotnet/extensions#6596

Full Changelog:dotnet/extensions@v9.7.0...v9.7.1

9.7.0 What's Changed

Branding updates for 9.7 by @joperezr inBranding updates for 9.7 dotnet/extensions#6495
Fix name of genai input/output tokens tag by @stephentoub inFix name of genai input/output tokens tag dotnet/extensions#6494
[main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in[main] Update dependencies from dotnet/arcade dotnet/extensions#6503
Improve handling of RawRepresentation in OpenAI{Response}ChatClient by @stephentoub inImprove handling of RawRepresentation in OpenAI{Response}ChatClient dotnet/extensions#6500
Bring back AsIChatClient for OpenAI AssistantClient by @stephentoub inBring back AsIChatClient for OpenAI AssistantClient dotnet/extensions#6501
Add resiliency to Resource Monitoring in Linux by @amadeuszl inAdd resiliency to Resource Monitoring in Linux dotnet/extensions#6489
Merging changes from the internal fork by @joperezr inMerging changes from the internal fork dotnet/extensions#6508
Workaround OpenAI assistant's RunCreationOption's tools override by @stephentoub inWorkaround OpenAI assistant's RunCreationOption's tools override dotnet/extensions#6512
Add ChatOptions.Instructions by @stephentoub inAdd ChatOptions.Instructions dotnet/extensions#6505
Introduce evaluators for agentic workflows by @shyamnamboodiripad inIntroduce evaluators for agentic workflows dotnet/extensions#6514
Allow a CachingChatClient to control per-request caching by @stephentoub inAllow a CachingChatClient to control per-request caching dotnet/extensions#6524
Tweak OpenAI JSON schema transforms by @stephentoub inTweak OpenAI JSON schema transforms dotnet/extensions#6523
Merging changes from release/9.6 branch by @joperezr inMerging changes from release/9.6 branch dotnet/extensions#6516
Augment AIJsonUtilities.CreateJsonSchema for more types and annotations by @stephentoub inAugment AIJsonUtilities.CreateJsonSchema for more types and annotations dotnet/extensions#6540
Added conversions from AIFunction to various OpenAI tools by @KrzysztofCwalina inAdded conversions from AIFunction to various OpenAI tools dotnet/extensions#6539
Add SpeechToTextResponse.Usage by @stephentoub inAdd SpeechToTextResponse.Usage dotnet/extensions#6546
Implement BLEU score evaluation for NLP tests by @peterwald inImplement BLEU score evaluation for NLP tests dotnet/extensions#6537
[main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in[main] Update dependencies from dotnet/arcade dotnet/extensions#6553
#5962 Change to early return of OS instead of throwing by @juliankock in#5962 Change to early return of OS instead of throwing dotnet/extensions#5963
Mark log sampling & buffering API as stable by @evgenyfedorov2 inMark log sampling & buffering API as stable dotnet/extensions#6534
Update GenAI otel impl for v1.35 by @stephentoub inUpdate GenAI otel impl for v1.35 dotnet/extensions#6557
Implement GLEU and F1 NLP evaluators by @peterwald inImplement GLEU and F1 NLP evaluators dotnet/extensions#6555
Update tokenizer algorithm to use is [..] by @peterwald inUpdate tokenizer algorithm to use is [..] dotnet/extensions#6561
Rename some constants to match convention by @shyamnamboodiripad inRename some constants to match convention dotnet/extensions#6562
Add DistributedCachingChatClient/EmbeddingGenerator.AdditionalCacheKeyValues by @stephentoub inAdd DistributedCachingChatClient/EmbeddingGenerator.AdditionalCacheKeyValues dotnet/extensions#6558

New Contributors

@KrzysztofCwalina made their first contribution inAdded conversions from AIFunction to various OpenAI tools dotnet/extensions#6539
@juliankock made their first contribution in#5962 Change to early return of OS instead of throwing dotnet/extensions#5963

Full Changelog:dotnet/extensions@v9.6.0...v9.7.0

9.6.0 What's Changed

Branding updates for 9.6.0 by @joperezr inBranding updates for 9.6.0 dotnet/extensions#6399
Add log buffering info to README.md by @evgenyfedorov2 inAdd log buffering info to README.md dotnet/extensions#6403
Fix dynamic config update for log buffering by @evgenyfedorov2 inFix dynamic config update for log buffering dotnet/extensions#6435
Remove unused select param from CreateRecordsForDocumentAsync by @jongalloway inRemove unused select param from CreateRecordsForDocumentAsync dotnet/extensions#6341
Merge internal changes by @joperezr inMerge internal changes dotnet/extensions#6437
Reduce per-lookup overhead from key validation in HybridCache by @MihaZupan inReduce per-lookup overhead from key validation in HybridCache dotnet/extensions#6441
[main] Update dependencies from dotnet/arcade by @dotnet-maestro in[main] Update dependencies from dotnet/arcade dotnet/extensions#6443
Merge release/9.5 into main by @joperezr inMerge release/9.5 into main dotnet/extensions#6448
Fix up comments in eval API json files by @shyamnamboodiripad inFix up comments in eval API json files dotnet/extensions#6452
Remove preview tag on Azure DevOps extension by @peterwald inRemove preview tag on Azure DevOps extension dotnet/extensions#6456
Bump PackageValidation against 9.5.0 and enable for stable MEAI packages by @joperezr inBump PackageValidation against 9.5.0 and enable for stable MEAI packages dotnet/extensions#6458
Fix paramref tag by @gewarren inFix paramref tag dotnet/extensions#6459
[main] Update dependencies from dotnet/arcade by @dotnet-maestro in[main] Update dependencies from dotnet/arcade dotnet/extensions#6462
Add a script to diff the contents of folders that match a specific pattern across two branches by @shyamnamboodiripad inAdd a script to diff the contents of folders that match a specific pattern across two branches dotnet/extensions#6453
Removetitle anddescription keywords from root-level schemas in AIFunctionFactory. by @eiriktsarpalis inRemovetitle anddescription keywords from root-level schemas in AIFunctionFactory. dotnet/extensions#6465
Replace JSON vector store with SQLite by @MackinnonBuck inReplace JSON vector store with SQLite dotnet/extensions#6438
Update chat templateMicrosoft.SemanticKernel dependency to 1.53.0 by @MackinnonBuck inUpdate chat templateMicrosoft.SemanticKernel dependency to 1.53.0 dotnet/extensions#6470
Update chat template external dependencies by @MackinnonBuck inUpdate chat template external dependencies dotnet/extensions#6471
Exclude provider URI from cache key computation by default by @shyamnamboodiripad inExclude provider URI from cache key computation by default dotnet/extensions#6473
Make hashing stable w.r.t. indentation settings and property ordering. by @eiriktsarpalis inMake hashing stable w.r.t. indentation settings and property ordering. dotnet/extensions#6476
[main] Update dependencies from dotnet/arcade by @dotnet-maestro in[main] Update dependencies from dotnet/arcade dotnet/extensions#6481
Add default value for namedArg in Microsoft.Gen.Metrics.parser by @BowenYang666 inAdd default value for namedArg in Microsoft.Gen.Metrics.parser dotnet/extensions#6238
Update OpenTelemetryChatClient to 1.34 by @stephentoub inUpdate OpenTelemetryChatClient to 1.34 dotnet/extensions#6466
Delete M.E.AI changelog files by @stephentoub inDelete M.E.AI changelog files dotnet/extensions#6467
Add comma to remarks by @gewarren inAdd comma to remarks dotnet/extensions#6485
Implement disk io metrics for linux by @makazeu inImplement disk io metrics for linux dotnet/extensions#6374
AddAIFunction.ReturnJsonSchema by @eiriktsarpalis inAddAIFunction.ReturnJsonSchema dotnet/extensions#6447

New Contributors

@MihaZupan made their first contribution inReduce per-lookup overhead from key validation in HybridCache dotnet/extensions#6441
@BowenYang666 made their first contribution inAdd default value for namedArg in Microsoft.Gen.Metrics.parser dotnet/extensions#6238

Full Changelog:dotnet/extensions@v9.5.0...v9.6.0

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Bump Microsoft.Extensions.ServiceDiscovery from 9.5.2 to 10.0.0

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---updated-dependencies:- dependency-name: Microsoft.Extensions.ServiceDiscovery  dependency-version: 10.0.0  dependency-type: direct:production  update-type: version-update:semver-major...Signed-off-by: dependabot[bot] <support@github.com>

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Nov 12, 2025