Microsoft Agent Framework

From the release notes

What's Changed .NET: Replace deprecated AWSSDK.Extensions.Bedrock.MEAI with AWS.Bedrock.MEAI by Ben Thompson (@BenGearset) in #7983 .NET: Remove Azure.AI.OpenAI dependency by Roger Barreto (@rogerbarreto) in #7986 .NET: Track and update A2A task state by SergeyMenshykh in #7998 .NET: Update Azure AI Projects to 3.0.0 beta 1 by Roger Barreto (@rogerbarreto) in #7995 .NET: Bump Aspire.Hosting from 13.5.2 to 13.5.3 by Dependabot (@dependabot)[bot] in #8029 .NET: [BREAKING] Add file_access_read_lines and move the line-numbering contract onto AgentFileStore by Anton Sokolovskyi (@antsok) in #7671 Bump Anthropic from 12.42.0 to 12.43.0 by Dependabot (@dependabot)[bot] in #8028 .NET: Bump AgentMemory.AgentFramework from 1.4.1 to 1.5.0 by Dependabot (@dependabot)[bot] in #8027 .NET: [BREAKING] Clarify A2A agent run modes by SergeyMenshykh in #8032 .NET: Clarify declarative workflow input serialization by 宇宙的山峰 (@UniversePeak) in #8046 .NET: Preserve streamed annotations in Foundry hosted responses by Roger Barreto (@rogerbarreto) in #7984 .NET: Improve Hosted Agent LRA Resilient Recovery Sample by Roger Barreto (@rogerbarreto) in #8082 .NET: Include workflow outputs in hosted agent responses by 宇宙的山峰 (@UniversePeak) in #8020 .NET: Improve inline skill argument error guidance by SergeyMenshykh in #8118 .NET: Bump Azure.Monitor.OpenTelemetry.Exporter from 1.5.0 to 1.8.3 by Dependabot (@dependabot)[bot] in #7887 [BREAKING] .NET: Isolate LocalCodeAct subprocess environment by Eduard van Valkenburg (@eavanvalkenburg) in #8159 .NET: Scope OpenAI hosting storage by isolation key by SergeyMenshykh in #8146 .NET: chore: updates source link dependency due to transitive vulnerability by Vincent Biret (@baywet) in #8179 .NET: chore: updates Microsoft owned testing dependencies by Vincent Biret (@baywet) in #8167 .NET: ci: update Microsoft.CodeAnalysis.NetAnalyzers and Microsoft.VisualStudio.Threading.Analyzers versions by Vincent Biret (@baywet) in #8166 .NET: chore: updates microsoft extensions and related packages to their latest version, as well as global.json dotnet sdk version to align by Vincent Biret (@baywet) in #8190 .NET: Bump Azure.AI.Projects to 3.0.0-beta.2 by Roger Barreto (@rogerbarreto) in #8165 .NET: fix: revalidate file skill paths before use by SergeyMenshykh in #8151 .NET: Opt in to client function forwarding for Responses hosting by Roger Barreto (@rogerbarreto) with @Copilot in #7844 .NET: chore: updates additional analyzers packages by Vincent Biret (@baywet) in #8198 .NET: Harden LocalCodeAct OS validation by Eduard van Valkenburg (@eavanvalkenburg) in #8239 .NET: upgrades xunit and other dependencies by Vincent Biret (@baywet) in #8202 .NET: ci/promote removed apis by Vincent Biret (@baywet) in #8229 .NET: fix: do not forward headers on redirect by Vincent Biret (@baywet) in #8164 .NET: updates open telemetry deps by Vincent Biret (@baywet) in #8253 .NET: Dotnet: reset $LASTEXITCODE per command in persistent Po

From the release notes

[1.18.0] - 2026-09-10 Added samples: Add Magentic custom-manager prompts and MLflow observability examples (#7876, #8085) agent-framework-core: Add shared vector-store abstractions, portable filters, and an in-memory vector store (#8014, #8115) agent-framework-core: Add a maximum-duration bound and stop-reason signal to the tool invocation loop (#7772) agent-framework-core: Support mixed workflow invocation keyword arguments (#7963) agent-framework-ag-ui: Add emit_messages_snapshot configuration for suppressing the terminal message snapshot (#7808) agent-framework-ag-ui, agent-framework-core: Add supported MCP Host-history conversion for persisted AG-UI conversations (#8130) agent-framework-azure-ai-search, agent-framework-core: Add an Azure AI Search implementation of the shared vector-store APIs (#8153) agent-framework-redis, agent-framework-core: Add Redis HASH and JSON vector stores (#8156) agent-framework-qdrant: Add the alpha Qdrant vector-store connector (#8154) agent-framework-postgres: Add the alpha PostgreSQL/pgvector connector (#8155) Changed agent-framework, agent-framework-core, agent-framework-foundry, agent-framework-lab: [BREAKING] Isolate Lab dependency resolution, remove Lab from core[all], and support Azure AI Projects through 2.6 with OpenAI 3.x (#8188) agent-framework-core: [BREAKING - experimental] Add ranged file reads and move the line-numbering contract onto AgentFileStore (#7669) agent-framework-core: [BREAKING - experimental] Centralize file, memory, session, and skill path normalization (#8123) agent-framework-anthropic, agent-framework-azure-ai-search, agent-framework-azure-cosmos, agent-framework-bedrock, agent-framework-copilotstudio, agent-framework-core, agent-framework-foundry, agent-framework-gemini, agent-framework-mem0, agent-framework-openai: [BREAKING] Make SecretString a masked value wrapper rather than a str subclass and align provider credential handling (#8127) agent-framework-github-copilot: [BREAKING] Make workspace file hooks opt-in and document enable_file_hooks migration (#7517) agent-framework-foundry-hosting: [BREAKING - beta] Restrict checkpoint deserialization by default and allow applications to register additional checkpoint types (#8045) agent-framework-core, agent-framework-foundry: Move Foundry evaluation serialization into the Foundry integration (#8031) agent-framework-github-copilot: Update the GitHub Copilot SDK dependency to 1.0.11 and align file-operation behavior (#8002) agent-framework-ag-ui, agent-framework-devui: Expand compatibility through FastAPI 0.141 (#8052) agent-framework-core, agent-framework-hyperlight: Update Hyperlight Sandbox to 0.6 and enable supported Python 3.14 installations (#8174) agent-framework-foundry, agent-framework-foundry-hosting, agent-framework-openai: Lazily load Foundry and OpenAI integrations to avoid unnecessary import-time dependencies (#8219) agent-framework-devui: Update frontend transitive dependencies (#8019, #8009, #8175