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Gemma 4 not registered in LLMRegistry — Gemma.supported_models() only matches gemma-3.*

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

Status: Open.

Bug

#5156 In google/adk-python;

· epicwhale opened on Apr 4, 2026

can_use_output_schema_with_tools with tools using LiteLLM

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

Status: Open.

Bug

#5130 In google/adk-python;

· condorcet opened on Apr 3, 2026

adk deploy agent_engine does not fail when provided with invalid argument to --agent_engine_config_file

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

#5127 In google/adk-python;

· rei-arifi opened on Apr 3, 2026

Support transfer_to_agent from after_model_callback without synthetic FunctionCall

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.

Feature

#5125 In google/adk-python;

· pattabhia opened on Apr 3, 2026

Add MLflow evaluation scorer documentation for ADK evaluators

documentation[Component] This issue is related to documentation, it will be transferred to adk-docs[Component] This issue is related to documentation, it will be transferred to adk-docs

Status: Open.

Feature

#5123 In google/adk-python;

· debu-sinha opened on Apr 2, 2026

ADK_SUPPRESS_EXPERIMENTAL_FEATURE_WARNINGS not working

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

#5114 In google/adk-python;

· lovervoorde opened on Apr 2, 2026

[Live/bidi_stream_query] Session state silently dropped — first queue message 'state' field never read, async_create_session called without state=

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

live[Component] This issue is related to live, voice and video chat[Component] This issue is related to live, voice and video chat

Status: Open.

Bug

#5113 In google/adk-python;

· smwitkowski opened on Apr 2, 2026

"Secret" session state scope

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.

Feature

#5112 In google/adk-python;

· guillaumeblaquiere opened on Apr 2, 2026

FileArtifactService: user_id and session_id not validated for path traversal

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

#5110 In google/adk-python;

· vnykmshr opened on Apr 2, 2026

Support sub-agent escalation event in ParallelAgent

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

#5104 In google/adk-python;

· jinnigu opened on Apr 2, 2026

Allow user to define credential_key for MCPToolset

mcp[Component] Issues about MCP support[Component] Issues about MCP support

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

tools[Component] This issue is related to tools[Component] This issue is related to tools

Status: Open.

Feature

#5103 In google/adk-python;

· abehsu-mu opened on Apr 2, 2026

[Bug] Resume can populate BaseAgentState for SequentialAgent and fail with ValidationError

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

Status: Open.

Bug

#5102 In google/adk-python;

· kazuki1213 opened on Apr 2, 2026