microsoft/agent-framework python-1.15.0 on GitHub

[1.15.0] - 2026-08-21

agent-framework-ag-ui, agent-framework-openai: Add optional A2UI support for agent-generated interfaces and preserve streaming tool-call indices for A2UI consumers (#7423)
agent-framework-core: Add MiddlewareFailure as a first-class fatal signal for function middleware (#7562)
agent-framework-core, agent-framework-azure-cosmos: Add a process-wide workflow checkpoint type registry, register Cosmos checkpoint state types, and declare the compatibility dependency required by the supported Cosmos SDK floor (#7636)
agent-framework-core, agent-framework-foundry-hosting: Add steering, retry, and recovery support for resilient Foundry Hosted Agents, with long-running workflow samples (#7670)
samples: Add the production-ready installment of the build-your-own-claw harness sample (#7698)

agent-framework-ag-ui, agent-framework-core: [BREAKING] Consolidate OpenTelemetry GenAI semantic-convention support around stable and experimental modes with explicit message-event controls (#7673)
agent-framework-ag-ui: Align run continuity and avoid emitting unchanged predictive state snapshots (#7662, #7766)
agent-framework-core: Defer turn-scoped after_run context providers to the agent-loop boundary (#7289)
agent-framework-ag-ui, agent-framework-core, agent-framework-declarative: Persist approval state and distinguish absent values from falsey approval data (#7631)
agent-framework-devui: Forward function_invocation_kwargs through DevUI agent runs (#7779)
agent-framework-core, samples: Clarify skill script arguments and MCP tool argument-filtering behavior (#7695, #7801)
tests: Update uv, Ruff, mypy, ty, Flit, and the root build-system dependency range (#7644, #7645, #7780, #7781, #7782, #7783, #7784)
docs: Clarify PR review resolution and pin the Agent Lightning installation documentation link (#7746, #7693)

agent-framework-a2a, agent-framework-core, agent-framework-orchestrations: Preserve and normalize A2A inputs when used through orchestrations (#7761)
agent-framework-ag-ui: Preserve tool-message IDs, URL-source attachments, and JSON workflow resume payloads (#7510, #7655, #7684)
agent-framework-anthropic, agent-framework-core: Preserve structured instructions when merging chat options (#7730)
agent-framework-core: Preserve all fan-in trace contexts and restrict workflow type deserialization (#7557, #7500)
agent-framework-core: Avoid remote MCP tool-name shadowing while retaining the documented argument allowlist (#7799)
agent-framework-core: Always emit an arguments field for zero-argument tool calls in Foundry evaluations (#7734)
agent-framework-core, agent-framework-github-copilot: Forward telemetry configuration to the GitHub Copilot client (#7625)
agent-framework-core, agent-framework-redis: Prevent superlinear history growth by deduplicating saved messages (#7242)
agent-framework-devui: Deduplicate streamed tool calls (#7652)
agent-framework-foundry-hosting: Surface A2A preview consent URLs and prevent duplicate streamed function calls (#7606, #7486)
agent-framework-orchestrations: Preserve agent additional_properties in handoff clones (#7755)