microsoft/agent-framework dotnet-1.2.0

dotnet-1.2.0

Repository: microsoft/agent-framework

Tag: dotnet-1.2.0

Published: 2026-04-21T21:23:14Z

Prerelease: no

Release notes:

Changes:

• f2b215a2f6d4767fd37b17dd33195100ea2e498f .NET [WIP] Foundry Hosted Agents Support (#5312) [ #5091, #5287, #5278, #5281, #5316, #5336, #5341, #5367, #5368, #5371, #5374, #5406, #5408 ]
• 57fa8ea9022ac9ec39fb5ececb020aa042599c8f Python: Fix OpenAIEmbeddingClient to use AsyncOpenAI for /openai/v1 endpoints (#5137) [ #5068 ]
• aa582d021d69dd3b047d7664ced090dcc08b56f2 Python: feat(evals): add ground_truth support for similarity evaluator (#5234)
• 8f17067383154e87e3a3c8ae673c7b5f1cf71add .NET: Update .NET package version 1.2.0 (#5364)
• 267351b7607595cfcb2d64c739587bc50a476e2f .NET: Expand Workflow Unit Test Coverage (#5390)
• adcd2d33f5e32be85ea141fc8cc6fbe590aa0981 .NET: Declarative workflows - Gracefully handle agent scenarios when no response is returned (#5376)
• d5777bc546ba48652d85cec6093b445965533a4a fix: Duplicate CallIds cause Handoff Message Filtering to fail (#5359)
• b6b191ad9c2ddaaa8a647419135f01a2d3fce73a Python: Add second approval-required tool (set_stop_loss) to concurrent_builder_tool_approval sample (#4875) [ #4874 ]
• 2c8036779c20e5fa2feb6304c01e28c594e801a9 Python: Bump versions for a release. Update CHANGELOG (#5385)
• ce8b6305d8e7280ac9d22226a17e2e4f0828ef97 Python: Foundry hosted agent V2 (#5379) [ #5177, #5215, #5235, #5261, #5281, #5284, #5298, #5372, #5378 ]

See More

• 07f4c8a8d66d2fba40bdd086f16cc6dca059d054 Python: Expose forwardedProps to agents and tools via session metadata (#5264) [ #5239 ]
• 04aaf0c1fe6023a579a334f9d2afe5b79ca497f0 Python: Add support for Foundry Toolboxes (#5346)
• 3e54a689fc96d681a072fe7e7cfc445909dac74b Python: Add search tool content for OpenAI responses (#5302)
• 60af59ba8b3c871065d0a288f21bfd7f0d6be3c1 .NET: Features/3768-devui-aspire-integration (#3771)
• 69894eded89d6e8ebf7bdb75cd0d9da54ade8b21 Python: Flatten hyperlight execute_code output (#5333)
• 495e1dad6bf3c62b14929805cfd5f0409c897876 Python: Fix CopilotStudioAgent to reuse conversation ID from existing session (#5299) [ #5285 ]
• 5777ed26e62e721375f78c404b8df1dfbc322560 .NET: fix: Add session support for Handoff-hosted Agents (#5280)
• 52303a8d07e8f9f2c3f056d969d99a9062c06219 .NET: Add Code Interpreter container file download samples (#5014) [ #3081 ]
• c85d24da440ebe5266852f6356aecdadc41379c6 .NET: Fix declarative resume edge predicates to recognize both direct and PortableValue-wrapped forms after checkpoint restore (#5323)
• b03cb324d5cc5e91a55b5eb9045b8ead244aaf11 Python: Add Hyperlight CodeAct package and docs (#5185)
• dbf935b4e30cf9ae2553cad54f6bc09668f7eb62 .NET: fix: Foundry Agents without description in Handoff (#5311)
• ca580a8316a904e947e48aaba8f3c00eb738ae36 .NET: Add error checking to workflow samples (#5175)
• 101e07b0610e2a73e0c369be7e81907a44fb243f .NET: Add Handoff sample (#5245)
• aee1acbf8baeb9fb3b3f196975aae9e7f7481096 .NET: Foundry Evals integration for .NET (#4914) [ #5269 ]
• 91e34358eb4f2643b13537b470d8ea0aeaec7307 Python: Feat: Add finish_reason support to AgentResponse and AgentResponseUpdate (#5211) [ #4622 ]
• 90a633967ca60601fc696d335d770f9f05e236e2 Python: Fix Gemini client support for Gemini API and Vertex AI (#5258)
• c14beedb3af8bdee168e3a06a245a5b9d8fa5f75 test: Add Handoff composability test (#5208)
• 43d98974d3994486a35602467efcffb85839ce66 fix: propagate A2A metadata with namespaced key in additional_properties (#5240) (#5256)
• 60da0ffb4803e0db18d3d3bde8e008eb4277882c .NET: Improve local release build perf by only formatting for one build target framework (#5266)
• a2044829b13659ac40f7f4112f74efcce15397cc .NET: Update Microsoft.Extensions.AI to 10.5.0 and OpenAI to 2.10.0 and remove unused refs (#5269)
• 435c66e9c9f215fdea4b041da35e6ca774b63094 Python: Handle url_citation annotations in FoundryChatClient streaming responses (#5071) [ #5029 ]
• 52d50be9e06456aa8dc4adb2525b0bbd4f60d4d3 Bump Anthropic SDK to 12.13.0 and Anthropic.Foundry to 0.5.0 (#5279)
• d20f9b5f973b0b8f693f530a8e3c0f9d9c99bb94 Add AgentExecutorResponse.with_text() to preserve conversation history through custom executors (#5255) [ #5246 ]
• 87a8fa2a9d0ffd3d0b4b31882e70c4f60462bb29 .NET: Fix intermittent checkpoint-restore race in in-process workflow runs (#5134)
• 8f7fd9525d1bf24f9606779ba7f8d41b66ce2ff1 Python: Add OpenAI types to default checkpoint encoding allow list (#5297)
• 69697065ab78502c5e58a7e6bc90ae14fdc46c20 Python: Add context_providers and description to workflow.as_agent() (#4651)
• fe4cd3cddc99f157710296dad892bec427cae991 Revert to public MCP server and skip on transient upstream errors (#5296)
• 611230cc8ebde031d6c15dbc15d7053ddf56b40c Python: improve misc-integration test robustness (#5295)
• f112150cfbc4d514b21b60a81bbe5239b4b2c81f Python: bump misc-integration retry delay to 30s (#5293)
• ff05c22c5853a51b83c05b6fdb3b8e982bbf3b31 Python: add experimental file history provider (#5248)
• eab7f09d03387a2b393f9785963353c1a09e8b6b Forward provider config to SessionConfig in GitHubCopilotAgent (fixes #5190) (#5195)
• 68b93641b6802abd2d00a5191cb16c6074d39fe1 Python: Bump agent-framework-devui to 1.0.0b260414 for release (#5259)
• 2b251d904f1cb045ec3b7e13411cac3c1aa1e019 Python: Fix reasoning replay when store=False (#5250)
• 485af07b8c21896b7f24a0313b5a226b3bd711f8 Python: Add GeminiChatClient (#4847)
• 64c68ca8576ccfde295d0cf1db51bd5c2b9bed82 Python: Skip get_final_response in OTel _finalize_stream when stream errored (#5232) [ #5231 ]
• 98e17764a47141739d1a1b24eae9f3c6649f9626 Python: Fix DevUI streaming memory growth and add cross-platform regression coverage (#5221)
• 7bb0feca591d63722d520dbc94af76d70b206129 Python: Move InMemory history provider injection to the first invocation (#5236)
• f183f888a344031e348f966110498eeb468fe0eb Python: AG-UI deterministic state updates from tool results (#5201)
• 3c31ac28b53562b1db91f2c42a86d083b8d7dd14 Python: Fix HandoffBuilder dropping function-level middleware when cloning agents (#5220) [ #5173 ]
• 1b95e8585d7e892c42c62313908664b8d7c7e1a8 Python: Add allowed_checkpoint_types support to CosmosCheckpointStorage for parity with FileCheckpointStorage (#5202) [ #5200, #3 ]
• b89adb280b45a41ab0f0ff28d7947a73d3adbd4c Python: skill name validation improvements (#4530)
• 913397492fd9a4d42c46d7d874c409549686827d Bump pygments from 2.19.2 to 2.20.0 in /python (#4978)
• 952e685e176d9499aff484224e7133885f16d4cf Python: Fix python-feature-lifecycle skill...