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Feature Request: Native AFC & Multi-Tool Combination Support (Built-in Grounding + Custom Python Callables) on Vertex AI

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

Status: Open.

Feature

#5772 In google/adk-python;

· avadlapatla opened on May 20, 2026

Bug: run_live() forces session_resumption.transparent=True on reconnect, breaking Gemini Developer API session resumption

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

#5771 In google/adk-python;

· smetanokr opened on May 20, 2026

UnboundLocalError on ApiServer in cli/fast_api.py when running adk web --reload_agents on 2.0.0

v2Affects only 2.0 versionAffects only 2.0 version

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

Status: Open.

Bug

#5765 In google/adk-python;

· eliasecchig opened on May 20, 2026

ADK 2.0.0 GA: task-mode LlmAgents disabled as workflow graph nodes (regression from 2.0.0b1)

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

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

#5764 In google/adk-python;

· markns opened on May 20, 2026

state_delta passed to /run endpoint is silently ignored in Workflow (NodeRunner) path

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

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

Status: Open.

Bug

#5763 In google/adk-python;

· trongthanht3 opened on May 20, 2026

DatabaseSessionService.append_event raises MissingGreenlet with asyncpg after client disconnect (regression from da73e718ef)

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

Status: Open.

Bug

#5761 In google/adk-python;

· KrishnaVemu opened on May 20, 2026

GcpAuthProvider: iamconnectorcredentials.credentials:retrieve returns 404 NOT_FOUND with empty details[] for SPIFFE-bound agents despite correct IAM + Agent Registry binding

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

Status: Open.

Bug

#5753 In google/adk-python;

· allentong opened on May 19, 2026

Visibility bump: #3984 / #3991 (AgentTool event streaming propagation) — status update requested

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.

Bug

#5742 In google/adk-python;

· mattmcc-attest opened on May 18, 2026

responseMimeType.application/json is incompatible with function-calling modes in ADK agent config

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

Status: Open.

Bug

#5735 In google/adk-python;

· hapiiiiGit opened on May 18, 2026

rubric_based_final_response_quality_v1 returns NOT_EVALUATED despite actual_invocation.final_response text

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

#5732 In google/adk-python;

· txnguyen292 opened on May 17, 2026

DatabaseSessionService.get_session returns all events when num_recent_events=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

Status: Open.

Bug

#5730 In google/adk-python;

· tiino opened on May 17, 2026

MCPToolset "Attempted to exit cancel scope in a different task" under to_a2a() multi-agent (A2A) — scales with concurrent McpToolset count; SSE transport is race-free

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

Status: Open.

Bug

#5729 In google/adk-python;

· LiuYuWei opened on May 17, 2026