microsoft/agent-framework python-1.0.0rc5 on GitHub

[1.0.0rc5] - 2026-03-19

Important

For any breaking changes & updates, please view this migration guide.

Added

samples: Add foundry hosted agents samples for python (#4648)
repo: Add automated stale issue and PR follow-up ping workflow (#4776)
agent-framework-ag-ui: Emit AG-UI events for MCP tool calls, results, and text reasoning (#4760)
agent-framework-ag-ui: Emit TOOL_CALL_RESULT events when resuming after tool approval (#4758)

Changed

agent-framework-devui: Bump minimatch from 3.1.2 to 3.1.5 in frontend (#4337)
agent-framework-devui: Bump rollup from 4.47.1 to 4.59.0 in frontend (#4338)
agent-framework-core: Unify tool results as Content items with rich content support (#4331)
agent-framework-a2a: Default A2AAgent name and description from AgentCard (#4661)
agent-framework-core: [BREAKING] Clean up kwargs across agents, chat clients, tools, and sessions (#4581)
agent-framework-devui: Bump tar from 7.5.9 to 7.5.11 (#4688)
repo: Improve Python dependency range automation (#4343)
agent-framework-core: Normalize empty MCP tool output to null (#4683)
agent-framework-core: Remove bad dependency (#4696)
agent-framework-core: Keep MCP cleanup on the owner task (#4687)
agent-framework-a2a: Preserve A2A message context_id (#4686)
repo: Bump danielpalme/ReportGenerator-GitHub-Action from 5.5.1 to 5.5.3 (#4542)
repo: Bump MishaKav/pytest-coverage-comment from 1.2.0 to 1.6.0 (#4543)
agent-framework-core: Bump pyjwt from 2.11.0 to 2.12.0 (#4699)
agent-framework-azure-ai: Reduce Azure chat client import overhead (#4744)
repo: Simplify Python Poe tasks and unify package selectors (#4722)
agent-framework-core: Aggregate token usage across tool-call loop iterations in invoke_agent span (#4739)
agent-framework-core: Support detail field in OpenAI Chat API image_url payload (#4756)
agent-framework-anthropic: [BREAKING] Refactor middleware layering and split Anthropic raw client (#4746)
agent-framework-github-copilot: Emit tool call events in GitHubCopilotAgent streaming (4711)

Fixed

agent-framework-core: Validate approval responses against the server-side pending request registry (#4548)
agent-framework-devui: Validate function approval responses in the DevUI executor (#4598)
agent-framework-azurefunctions: Use deepcopy for state snapshots so nested mutations are detected in durable workflow activities (#4518)
agent-framework-bedrock: Fix BedrockChatClient sending invalid toolChoice "none" to the Bedrock API (#4535)
agent-framework-core: Fix type hint for Case and Default (#3985)
agent-framework-core: Fix duplicate tool names between supplied tools and MCP servers (#4649)
agent-framework-core: Fix _deduplicate_messages catch-all branch dropping valid repeated messages (#4716)
samples: Fix Azure Redis sample missing session for history persistence (#4692)
agent-framework-core: Fix thread serialization for multi-turn tool calls (#4684)
agent-framework-core: Fix RUN_FINISHED.interrupt to accumulate all interrupts when multiple tools need approval (#4717)
agent-framework-azurefunctions: Fix missing methods on the Content class in durable tasks (#4738)
agent-framework-core: Fix ENABLE_SENSITIVE_DATA being ignored when set after module import (#4743)
agent-framework-a2a: Fix A2AAgent to invoke context providers before and after run (#4757)
agent-framework-core: Fix MCP tool schema normalization for zero-argument tools missing the properties key (#4771)

Full Changelog: python-1.0.0rc4...python-1.0.0rc5