adk-python releases

1.33.0 (2026-05-08)

Features

• add BufferableSessionService (0bc767e)
• apigee: allow injecting credentials into ApigeeLlm (ce578ff)
• Make ADK environment tools truncation limit configurable (83ae405)
• models: add get_function_calls and get_function_responses to LlmResponse (22fae7e)

Bug Fixes

• catch genai.ClientError when sandbox is missing (69fa777), closes #5480
• double append bug (f8b4c59)
• Filter out video events with inline data from being stored in session (88421f8)
• fix fork detection, correct offload limits, and add response logging in BigQuery plugin (9d1bb4b)
• hot reload agents for adk web (740557c)
• Only append skills to system instruction if ListSkillsTool isn't available (01f1fc9)
• prevent state_delta overwrite on function_response-only events (fc27203, 211e2ce), closes #3178
• Raise a clear actionable error when CustomAuthScheme lacks a registered AuthProvider (83f9817)
• should use app_name instead of req.app_name (8286066)
• simulation: Add error message when LlmBackedUserSimulator returns empty response (fb92aad)
• Update expressmode api call to include default api key param (e833995)
• use asyncio.sleep to avoid blocking event loop (3a1eadc)
• Use project and location instead of API key when deploying to agent engine (398f28f)

Code Refactoring

• adjust computation of workflow.steps metric and add new unit tests (03d6208)
• remove input.type and output.type attributes from adk metrics (9559968)

1.32.0 (2026-04-30)

Features

• Add an option to prevent the SaveFilesAsArtifactsPlugin from attaching reference file parts to the message (987c809)
• add credentials parameter to BigQueryAgentAnalyticsPlugin (34713fb)
• Add express mode onboarding support to adk deploy cli (2b04996)
• add native OpenTelemetry agentic metrics (6942aac)
• Add OpenTelemetry tracing for event compaction (c65dd55)
• Add sample agent demonstrating 2LO, 3LO, and API Key auth via GcpAuthProvider (909a8c2)
• Add support for Anthropic's thinking blocks (16952bd)
• Add support for excluding predefined functions in ComputerUseToolset (d760037)
• Add support for refusal messages in ApigeeLlm (d6594a1)
• Added indication of user message in history event list (662354a)
• Allow user to define credential_key for McpToolset (282db87), closes #5103
• analytics: add support for logging LLM cache metadata to BigQuery (02deeb9)
• eval: add evaluate_full_response option to rubric-based evaluation (#5316) (7623ff1)
• live: Add save_live_blob query parameter to /run_live endpoint (36ab8f1)
• mcp: gracefully handle tool execution errors and transport crashes (7744cfe)

Bug Fixes

• accumulate list values when merging parallel tool call state_delta (b0b8b31), closes #5190
• Add support for overriding the API version in GoogleLLM (1cdd1e7)
• auth: isolate resolved credentials in context to prevent race conditions and data leakage (5578772)
• avoid double-execution of sync FunctionTools returning None (78a8851), closes #5284
• block RCE vulnerability via nested YAML configurations in ADK (74f235b)
• bump Vertex SDK version (6380f6a)
• cancel siblings in parallel function calling on failure (49985c9)
• Capture and include LLM usage metadata in summarized events (5ce33b9), closes #4014
• catch ValueError in safe-JSON serializers for circular refs (70a7add), closes #5412
• deps: bump litellm cap to >=1.83.7 to admit CVE patches (6d2ada8)
• Disable bound token for mcp_tool (4c0c6db)
• fix dataset location handling in BigQueryAgentAnalyticsPlugin (c263426)
• Fix exception handling and argument order in ReflectRetryToolPlugin (1deab6d)
• Fix GcpAuthProvider to return capitalized Bearer scheme (ad937fe)
• fix lifecycle issues with credentials in BigQuery Agent Analytics Plugin (a69f861)
• Fix malformated skill.md (9a0d2f7)
• Fix misplaced pytest decorator on helper dataclass in 2LO integration tests (2343973)
• Fix RecursionError in ADK framework by adding circular reference detection to schema resolution (7de5bc5)
• fix rewind to preserve initial session state (af1b00a), closes #4933
• Fix SSRF and local-file access in load_web_page (0447e93)
• handle None state values in skill_toolset after session rewind (a977aa3)
• litellm: emit input_audio for audio inline_data parts (4073238), closes #5406
• live: mark all agents' Event as from other agents (48b7a64)
• live: treat input transcription as user message (ae1f2e6)
• optimization: handle None metric scores in LocalEvalSampler (#5415) (684a6e7)
• otel: change gen_ai.tool_definitions to gen_ai.tool.definitions (029b87d)
• preserve cache fingerprint stability on creation failure (4d5438c)
• preserve empty-string text parts in A2A converter (2d61cb6)
• preserve function call IDs for Anthropic models (f0c787f)
• Prevent LoopAgent from resetting sub-agent state on pause (8846be5)
• Quote user_id literals in VertexAiSessionService list filters (bdece00)
• read_file/write_file path type mismatch in BaseEnvironment and LocalEnvironment (782796f)
• relax EventActions.state_delta value type to Any (dbec8e9)
• remove exclude_unset=True to correctly serialize pydantic types (f95ac48)
• samples: Upgrade google-adk to 1.28.1 to fix vulnerability (b848390)
• Sanitize user_id derived from PubSub subscription and Eventarc source (0c4f157), closes #5324
• Scope Vertex RAG memory display names (784350d)
• Use correct camelCase functionCallId (c87ee1e)
• web oauth flow and trace view (87cd310)
• yield tool_call_parts immediately in live mode to unblock Gemini 3.1 tool calls (f57b05d)

Performance Improvements

• lazy-load optional providers and auth chain to cut cold start ~25% (66bfedc)

Code Refactoring

• move exception handling from metric emission into instrumentation handlers (62d7ee0)
• tests: Refactor tests to explicitly handle JSON_SCHEMA_FOR_FUNC_DECL feature flag (b580891)
• Use artifact_service.load_artifact during rewind (c3d50db), closes #4932

Documentation

• gemini: show subclass pattern for custom Client config (34c7505), closes #3628
• update output_schema docstring to reflect support for tools and output_schema together (e1e652d)
• Update README with instructions for installing ADK extensions (f2a1179)
• use sphinx-click to generate docs for google.adk.cli (f455974)

1.32.0 (2026-04-21)

Bug Fixes

• block RCE vulnerability via nested YAML configurations in ADK (e283ea0)
• bump Vertex SDK version (21ebe29)
• Disable bound token for mcp_tool (d0afddd)
• web oauth flow and trace view (c3dafdb)

1.31.0 (2026-04-16)

Features

• Add "google-adk" user agent to Parameter Manager and Secret Manager clients (b8e8f6b)
• Add support for memories.ingest_events in VertexAiMemoryBankService (d69477f)
• Add Vertex AI Agent Engine Sandbox integration for computer use (7686848)
• Firestore support (1a9df8f)
• live: Add live_session_id to LlmResponse (bf84e2c)

Bug Fixes

• Bump minimum mcp version from 1.23.0 to 1.24.0 (494c360)
• cli: correct console URL path after adk deploy agent_engine (64ed1a6), closes #5336
• execute on_event_callback before append_event to persist plugin modifications (454188d), closes #3990
• make _EvalMetricResultWithInvocation.expected_invocation Optional for conversation_scenario support (#5215) (a4c9387)
• Pass in auth headers with header provider instead of connection params (e12b0af)
• populate required fields in FunctionDeclaration json_schema fallback (9b9faa4)
• Resolve BigQuery plugin issues with A2A transfers, spans, and metadata (9ca8c38)
• upgrade google-genai lower bound (8bc5728)

Code Refactoring

• live: Use send_client_content to send conversation history (67dc2eb)
• live: Use send_tool_response for function responses (70c5fc8)

Documentation

• update MCP Toolbox branding, binary version, and asset references (47fa7b7)

1.28.1 (2026-04-02)

Features

• live: support live for gemini-3.1-flash-live-preview model (ee69661)

Bug Fixes

• Disallow args on /builder and Add warning about Web UI usage to CLI help (f037f68)
• live: Buffer tool calls and emit them together upon turn completion (081adbd)

1.27.4 (2026-03-24)

Bug Fixes

• Exclude compromised LiteLLM versions from dependencies pin to 1.82.6 (fa5e707)
• gate builder endpoints behind web flag (44b3f72)

1.24.1 (2026-02-06)

Bug Fixes

• Add back deprecated eval endpoint for web until we migrate(ae993e8)
• Update eval dialog colors, and fix a2ui component types (3686a3a)