python-1.4.0

[1.4.0] - 2026-05-14

Added

• agent-framework-core: Forward MCP tool call metadata (#5815)
• agent-framework-core: Support list[str] arguments for file-based skill scripts (#5850)
• agent-framework-core: Strip server-issued response item IDs under storage (#5690)
• agent-framework-ag-ui: Add tool result display channel (#5762)
• agent-framework-ag-ui: Promote to release candidate stage (#5844)
• agent-framework-devui: Improvements for DevUI (#5840)

Changed

• agent-framework-core: [BREAKING] — experimental skills API] Align file skill folder discovery with agentskills.io spec (#5807)
• agent-framework-core: [BREAKING] — experimental skills API] Extract skill spec metadata into SkillFrontmatter (#5775)
• agent-framework-devui: [BREAKING] Tighten default access controls and CORS posture (#5740)
• agent-framework-a2a: [BREAKING] Migrate to a2a-sdk v1.0 (#5752)

Fixed

• agent-framework-a2a: Fix A2A v1.0 non-streaming response and sample runtime issues (#5849)
• agent-framework-foundry-hosting: Reject path-traversal context IDs in checkpoint storage (#5851)
• agent-framework-core: Prevent MCP message_handler deadlock on notification reload (#4866)