agent-framework

vpython-1.6.0 scope: python Breaking

This release includes 1 breaking change for platform teams planning a safe upgrade.

Published 12d AI Agents & Assistants

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Topics

agent-framework agentic-ai agents ai .net multi-agent

+4 more

orchestration python sdk workflows

Affected surfaces

breaking_upgrade auth

ReleasePort's take

Light signal

editorial:auto 12d

Version python-1.6.0 now enables instrumentation by default in agent‑framework‑core and agent‑framework‑foundry, altering behavior for existing deployments.

Why it matters: If your system relies on the previous opt‑in instrumentation model, update configuration or code before upgrading to avoid unexpected metrics collection; plan a migration test before production rollout.

Summary

AI summary

Enable instrumentation by default in agent‑framework‑core and agent‑framework‑foundry (breaking change).

Changes in this release

Type	Severity	Summary	CVE
Breaking	Medium	Enable instrumentation by default in agent-framework-core and agent-framework-foundry. Enable instrumentation by default in agent-framework-core and agent-framework-foundry. Source: llm_adapter@2026-05-22 Confidence: low	—
Feature
Feature	Medium	Added agent-framework-core Shell tool supporting local and Docker execution. Added agent-framework-core Shell tool supporting local and Docker execution. Source: llm_adapter@2026-05-22 Confidence: high	—
Feature	Medium	Introduced agent-framework-monty CodeAct provider package. Introduced agent-framework-monty CodeAct provider package. Source: llm_adapter@2026-05-22 Confidence: high	—
Feature	Medium	Added experimental hosted tool factories on FoundryChatClient. Added experimental hosted tool factories on FoundryChatClient. Source: llm_adapter@2026-05-22 Confidence: high	—
Feature	Medium	Included tool definitions for Foundry agent evaluations. Included tool definitions for Foundry agent evaluations. Source: llm_adapter@2026-05-22 Confidence: high	—
Feature	Medium	Use non-streaming transport and `return_immediately` for background operations in agent-framework-a2a. Use non-streaming transport and `return_immediately` for background operations in agent-framework-a2a. Source: llm_adapter@2026-05-22 Confidence: high	—
Feature	Medium	Show more authentication methods in Foundry Toolbox MCP. Show more authentication methods in Foundry Toolbox MCP. Source: llm_adapter@2026-05-22 Confidence: low	—
Bugfix	Medium	Skip MCP prompt loading when unsupported in agent-framework-core. Skip MCP prompt loading when unsupported in agent-framework-core. Source: llm_adapter@2026-05-22 Confidence: high	—

Full changelog

[1.6.0] - 2026-05-21

Added

agent-framework-core: Shell tool with support for local and Docker execution (#5664)
agent-framework-monty: New Monty-backed CodeAct provider package (#5915)
agent-framework-foundry: Add experimental hosted tool factories on FoundryChatClient (#5958)
agent-framework-foundry: Include tool definitions for Foundry agent evals (#5974)
agent-framework-a2a: Use non-streaming transport and return_immediately for background ops (#5963)

Changed

agent-framework-core, agent-framework-foundry: [BREAKING] Enable instrumentation by default (#5865)
agent-framework-foundry: Show more authentication methods in Foundry Toolbox MCP (#5719)

Fixed

agent-framework-core: Skip MCP prompt loading when unsupported (#5370)

Breaking Changes

Enable instrumentation by default in **agent-framework-core** and **agent-framework-foundry**.

View diff on GitHub

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About agent-framework

A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

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Related context

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Earlier breaking changes

vdotnet-1.9.0 Removes [Experimental] tag from .NET Orchestrations, marking them stable.
vpython-1.7.0 Remove Python-only declarative actions and rename alias kinds to C# canonical names in agent-framework-declarative.
vpython-1.4.0 Migrate to a2a-sdk v1.0 in agent-framework-a2a
vpython-1.4.0 Tighten default access controls and CORS posture in agent-framework-devui
vpython-1.4.0 Extract skill spec metadata into SkillFrontmatter in agent-framework-core