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feat: GraphAgent — directed-graph workflow orchestration for ADK

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

Status: Open.

Feature

#4581 In google/adk-python;

· drahnreb opened on Feb 22, 2026

adk web: Links in chat responses should open in a new tab

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

Status: Open.

Bug

#4580 In google/adk-python;

· Vidon212 opened on Feb 22, 2026

confirmation: fail closed on malformed tool-confirmation responses

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

#4576 In google/adk-python;

· davidahmann opened on Feb 21, 2026

<code>_to_litellm_response_format</code> produces invalid strict schema for OpenAI models with nested Pydantic models

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

Status: Open.

Bug

#4573 In google/adk-python;

· karthikhic opened on Feb 20, 2026

Context caching at root level is not applied until first agent LLM call; sub-agents don’t reuse parent cache and receive full context

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

#4570 In google/adk-python;

· darkmars27 opened on Feb 20, 2026

Lock collision-safe event ID contract and regression coverage

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

#4567 In google/adk-python;

· davidahmann opened on Feb 20, 2026

Gemini enterprise generate unique session id on every request

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

#4566 In google/adk-python;

· vishal-agami opened on Feb 20, 2026

Syntax Error - LlmRequest Object has no attribute 'content' while using callback logging feature.

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

#4565 In google/adk-python;

· skaslay1910 opened on Feb 20, 2026

Output key doesn't work with temp state scope

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

#4564 In google/adk-python;

· maheshwaritanay opened on Feb 20, 2026

Gemini session id in Event

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

Status: Open.

Feature

#4558 In google/adk-python;

· ZachTB123 opened on Feb 19, 2026

Add CallableRetrieval tool for custom retrieval backends

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

Status: Open.

Feature

#4557 In google/adk-python;

· savula15 opened on Feb 19, 2026

ApplicationIntegrationToolset breaks in v1.24.0

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

Status: Open.

Bug

#4555 In google/adk-python;

· HonzaKopecky opened on Feb 19, 2026