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[Agent Engine] Deploy broken: base image has pydantic==2.13.4 + pydantic_core==2.47.0 simultaneously — incompatible versions cause SystemError at runtime

agent engine[Component] This issue is related to Vertex AI Agent Engine[Component] This issue is related to Vertex AI Agent Engine

Status: Open.

Bug

#6041 In google/adk-python;

· balakrishna-kudikala opened on Jun 9, 2026

allow dispatching of subagents

Status: Open.

#6039 In google/adk-python;

· lambda72453 opened on Jun 9, 2026

Bump starlette in v1 to fix CVE-2026-48710

web[Component] This issue will be transferred to adk-web[Component] This issue will be transferred to adk-web

Status: Open.

Bug

#6038 In google/adk-python;

· lucasoshiro opened on Jun 9, 2026

ValueError when querying hosted ADK agent from Gemini Enterprise via Google Cloud Agent Engine

services[Component] This issue is related to runtime services, e.g. sessions, memory, artifacts, etc[Component] This issue is related to runtime services, e.g. sessions, memory, artifacts, etc

Status: Open.

Bug

#6036 In google/adk-python;

· KenTandrian opened on Jun 9, 2026

[Feature] Enforce Agent output_schema for OpenAI-compatible / third-party BaseLlm providers (DeepSeek, NVIDIA NIM, etc.)

models[Component] Issues related to model support[Component] Issues related to model support

Status: Open.

Feature

#6021 In google/adk-python;

· majsterkovic opened on Jun 8, 2026

AgentTool: option to propagate parent conversation history to child session

core[Component] This issue is related to the core interface and implementation[Component] This issue is related to the core interface and implementation

needs review[Status] The PR/issue is awaiting review from the maintainer[Status] The PR/issue is awaiting review from the maintainer

Status: Open.

Feature

#6019 In google/adk-python;

· GiulioCMSanto opened on Jun 8, 2026

LlmAgent._run_async_impl resume path unconditionally sets end_of_agent=True

core[Component] This issue is related to the core interface and implementation[Component] This issue is related to the core interface and implementation

Status: Open.

Bug

#6017 In google/adk-python;

· anmol0e opened on Jun 8, 2026

A2A + VertexAiSessionService: part_metadata in event content rejected by Agent Engine Sessions appendEvent (400 INVALID_ARGUMENT) — regression in 2.2.0

request clarification[Status] The maintainer need clarification or more information from the author[Status] The maintainer need clarification or more information from the author

services[Component] This issue is related to runtime services, e.g. sessions, memory, artifacts, etc[Component] This issue is related to runtime services, e.g. sessions, memory, artifacts, etc

v2Affects only 2.0 versionAffects only 2.0 version

Status: Open.

Bug

#6014 In google/adk-python;

· rynecheow opened on Jun 8, 2026

ADK 2.0 ignores before_run callback for Workflow

v2Affects only 2.0 versionAffects only 2.0 version

workflow[Component] This issue is related to ADKworkflow[Component] This issue is related to ADKworkflow

Status: Open.

Bug

#6013 In google/adk-python;

· mfojtak opened on Jun 8, 2026

Deprecated model alias (gemini-flash-latest) causes confusing 404 NOT_FOUND with no actionable guidance

core[Component] This issue is related to the core interface and implementation[Component] This issue is related to the core interface and implementation

request clarification[Status] The maintainer need clarification or more information from the author[Status] The maintainer need clarification or more information from the author

v2Affects only 2.0 versionAffects only 2.0 version

Status: Open.

Bug

#6010 In google/adk-python;

· pj0201 opened on Jun 8, 2026

adk_request_credential FunctionCall args contain non-JSON-serializable SecuritySchemeType enum

auth[Component] This issue is related to authorization[Component] This issue is related to authorization

request clarification[Status] The maintainer need clarification or more information from the author[Status] The maintainer need clarification or more information from the author

v2Affects only 2.0 versionAffects only 2.0 version

Status: Open.

Bug

#6006 In google/adk-python;

· doughayden opened on Jun 7, 2026

GEPA optimizer crashes with KeyError on failed eval cases

eval[Component] This issue is related to evaluation[Component] This issue is related to evaluation

request clarification[Status] The maintainer need clarification or more information from the author[Status] The maintainer need clarification or more information from the author

Status: Open.

Bug

#6004 In google/adk-python;

· thoang3 opened on Jun 7, 2026