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ADK MCP Toolset Session Management Issues

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

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

Status: Open.

Bug

#2979 In google/adk-python;

· mr-nishanth opened on Sep 19, 2025

after_agent_callback broke agent handoff

a2a[Component] This issue is related a2a support inside ADK.[Component] This issue is related a2a support inside ADK.

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

#3220 In google/adk-python;

· renatoviolin opened on Oct 18, 2025

Issue with passing message from root agent to AgentTool

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

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

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

#3232 In google/adk-python;

· AryaRDI opened on Oct 20, 2025

Overridden <code>state_delta</code> by empty string in <code>after_tool_callback</code> after <code>skip_summarization</code>

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

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

Status: Open.

Bug

#3178 In google/adk-python;

· unnmdnwb3 opened on Oct 15, 2025

Artifact stored as text is not retrieved as text

good first issue[Community] This issue is good for newcomers to participate[Community] This issue is good for newcomers to participate

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

#3157 In google/adk-python;

· hcsama opened on Oct 13, 2025

BaseAuthenticatedTool saves invalid credentials

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

#3016 In google/adk-python;

· BrennanThomasDISW opened on Sep 24, 2025

Helper functions to get token from HTTPBearer, Session state key or credentials service

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

#2446 In google/adk-python;

· bimission opened on Aug 8, 2025

Add metadata field to LLMRequest for simplified user-specific data handling in callbacks

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

#2978 In google/adk-python;

· donggyun112 opened on Sep 19, 2025

Thought / Reasoning messages missing in events

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

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

#2982 In google/adk-python;

· bastiandg opened on Sep 19, 2025

Allow the user to pass in an <code>httpx_client_factory</code> to be used when creating the <code>streamablehttp_client</code>

tracing[Component] This issue is related to OpenTelemetry tracing[Component] This issue is related to OpenTelemetry tracing

Status: Open.

Feature

#2963 In google/adk-python;

· calvinbrown085 opened on Sep 16, 2025

Agentspace authorization access tokens no longer available in ToolContext.state["temp:*]

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

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

#3274 In google/adk-python;

· babeal opened on Oct 24, 2025

anthropic_llm - bugs/missing support

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

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

#3250 In google/adk-python;

· marcfong opened on Oct 22, 2025

Tool Confirmation not working when persisting session with Vertexaisession Service

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

#3290 In google/adk-python;

· SaiRaj07 opened on Oct 26, 2025

The use of a specific tool severely degrades prompt caching.

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.

Bug

#3227 In google/adk-python;

· UlookEE opened on Oct 20, 2025

Unable to call tools when extended thinking enabled in Claude

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

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

#3289 In google/adk-python;

· lambda72453 opened on Oct 26, 2025

Incomplete (and broken) implementation of DiscoveryEngineSearchTool

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

Status: Open.

Feature

#3146 In google/adk-python;

· guillaumeblaquiere opened on Oct 11, 2025

Support A2A <code>metadata</code> in <code>A2aAgentExecutor</code>

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

#3160 In google/adk-python;

· matiasanaya opened on Oct 13, 2025

An error occurred when deploying a private OpenAI-compatible model

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

Status: Open.

Bug

#3142 In google/adk-python;

· 944386136 opened on Oct 11, 2025

Temp prefixed state key not available on after_agent_callback

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

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

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

#3047 In google/adk-python;

· LucasBarzotto opened on Sep 30, 2025

OAuth Flow <code>prompt</code> Parameter Should Be Configurable

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

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.

Bug

#3046 In google/adk-python;

· rithuraj-techolution opened on Sep 29, 2025

VertexAiSessionService.get_session Becomes Super Slow When There Are Higher Numbers of Session Events

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

#3039 In google/adk-python;

· touhonoob opened on Sep 29, 2025

Include reasoning tokens and token streaming for anthropic LLMs

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

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

#3079 In google/adk-python;

· damithsenanayake opened on Oct 2, 2025

OAUTH2 code auth flow broken due to # being appended to the end of the callback query string.

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

Status: Open.

Bug

#3013 In google/adk-python;

· babeal opened on Sep 24, 2025

Returning new Content from on_user_message_callback fails to update invocation_context in runners.py

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

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

Status: Open.

Bug

#2909 In google/adk-python;

· halfpasttense opened on Sep 10, 2025

Update GkeCodeExecutor with option to use Agent Sandbox

help wanted[Community] Extra attention is needed[Community] Extra attention is needed

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

#3263 In google/adk-python;

· brandonroyal opened on Oct 23, 2025