1.10.0 (2026-09-16)

Features

• add @experimental annotation for unstable ADK APIs (69914f4)
• add EventActions.agentState for session-resumability checkpoints (8505a01)
• add one-way ADK Java to Kotlin engine interop module (baff584)
• add opt-in ResumabilityConfig flag for plain-text continuation auto-resume (f0fb722)
• Add unique event_id to BigQuery agent analytics events (15c70de)
• bridge ADK Java plugin onRunErrorCallback to the Kotlin engine (4ee155b)
• fire ADK Java plugin tool callbacks for native Kotlin tools (fda5a10)
• run an ADK Kotlin-engine runner behind the ADK Java Runner API (6ff8241)

Bug Fixes

• dev: serve the dev UI and its assets under a /dev-ui path (6866919)
• memory: format search timestamps as epoch millis (5269b87)
• models: set additionalProperties on schemas for OpenAI strict structured outputs (4b058cd)
• sessions: forward the caller-supplied session id in VertexAiSessionService (77eae25)
• sessions: validate HTTP status before parsing Vertex AI session responses (4192aca)

1.9.0 (2026-08-28)

Features

• add a GeminiLiveTransport seam to GeminiLlmConnection (e8b1c20)

Bug Fixes

• artifacts: honor the "user:" namespace in InMemoryArtifactService (0f46d5c)
• artifacts: honor user: namespace, prevent phantom keys, sort listing (01e1e41)
• avoid setting Part.partMetadata when metadata is empty (c05206f)
• chat: expose non-success HTTP status via typed exception (052f31a)
• preserve tool responses and thought signatures in Spring AI message conversion (6eef478)
• support typed responseSchema in ChatCompletionsRequest (8c06011)
• update Java ADK ResponseConverter to propagate long-running tool IDs on AUTH_REQUIRED state (2d20d1b)

1.8.0 (2026-08-13)

Features

• Add onRunErrorCallback to ADK Plugin and Runner (3e6b915)

Bug Fixes

• a2a: drop unparseable A2A metadata instead of aborting conversion (b75c916)
• a2a: fail the A2A stream in the handler, not via the transport (faa3482)
• a2a: guard null DataPart metadata in ResponseConverter (fcfd9bd)
• a2a: require explicit adk_type metadata to convert A2A DataParts (b704c5f)
• core: only resume tool confirmations for calls this agent emitted (e5aba3a)
• keep thought signature and tool call parts through streaming and history (d7355a7)
• runner: build a new message when saving input blobs, instead of writing into the caller's Content (80c1a21)
• stop returning exception text to remote A2A peers (a3df463)
• Update default BigQueryLoggerConfig table name and remove default dataset ID (723a2ef)
• update stream completion check in A2A SDK to handle all terminal and interrupted task states (2b87d65)

1.7.1 (2026-07-28)

Bug Fixes

• codeexecutors: add opt-in strict sandbox to ContainerCodeExecutor (8049f7e)
• core: fallback to name when Agent description is missing (233b83b)
• events: accumulate endOfAgent in EventActions.merge to preserve parallel stop requests (03b04fa)
• mcp: honor stdioServerParams in McpToolset.fromConfig (cf71d7b)
• preserve all parallel function calls on the live (BIDI) connection (edc330d)
• sessions: apply afterTimestamp and numRecentEvents together in VertexAiSessionService (24a4588)
• sessions: apply numRecentEvents and afterTimestamp together in InMemorySessionService (4d19f7d)

1.7.0 (2026-07-17)

Features

• BQAA Java preview-readiness fixes (redaction, table bootstrap, drop stats) (c685ece)
• flows: enable forced FC reordering based on gemini-3 model name (fc95ce7)
• Propagate A2A metadata to RunConfig for request-scoped access (285547b)
• share a single OkHttpClient with injectable daemon threads across the ADK (2394a95)
• Update 'gen_ai.usage.input_tokens' to include tool used tokens to match python ADK (ba23601)

Bug Fixes

• agents: warn when AgentTool config_path escapes agent base directory (7a4113e)
• Allow -latest model aliases in GoogleSearchTool (9181ea6)
• avoid StackOverflowError in PersistBarrier.awaitPersisted for large steps (a38b824)
• bigquery: BQAA Java P1 preview-readiness fixes (tracing, lifecycle, redaction, HITL) (2027a4b)
• confine config-driven dynamic class loading to intended types (3967cfa)
• correctly reassemble streamed function-call arguments in Gemini streaming (6bae658)
• fix Claude MCP tool inputSchema by falling back to parametersJsonSchema (760c8da)
• mcp: guard empty tool parameters in adkToMcpToolType (66fa921)
• preserve non-client function call IDs in GeminiUtil (971abb4)
• preserve provider ChatOptions type to prevent ClassCastException (5c3d328)
• prevent dropping grounding-only responses in BaseLlmFlow (4de0d8c)
• propagate A2A request metadata into the run config in AgentExecutor (410ff81)

1.6.0 (2026-07-06)

Features

• Add ADK Issue Monitoring (Spam Detection) Agent sample for Java (fd45dda)
• Add ADK Java Issue Triaging Agent sample (fa94438)
• Add ADK PR Triaging Agent for google/adk-java (f14f644)
• Add chat-completions API support to ApigeeLlm (df73784)
• Add ClassPathSkillSource to load skills from the Java classpath (587073a)
• Adds the ADK Stale Issue Auditor sample (b6bd2dd)
• advance SequentialAgent to later sub-agents after a HITL resume when resumability is enabled (407478b)
• flows: add RunConfig.groupFunctionResponsesInHistory to group function calls before responses (1b9b395)
• Updated Spring AI to 2.0.0, ECJ, build works with Java 25 (3f6665b)

Bug Fixes

• core: allow Long values to match INTEGER schema type (a6d41cf)
• dev: keep '' CORS default, drive WebSocket origins from config, warn on '' (5029081)
• dev: use localhost port wildcard for default CORS/WebSocket origins (cb73317)
• flows: end invocation on a deferred long-running tool call (6dd4594)
• gemini: align streaming function-call handling with ADK Python (37bb5e6)
• ignore usage-only responses outside bidi (a6cb87a)
• Make dry_run configurable for ADK Java PR triage, spam detection, and issue triage workflows (4225b07)
• Make stale issue workflow configurable for dry runs (d0edd41)
• map ChatResponse usage metadata to LlmResponse (71f6929)
• map token usage metadata for Anthropic Claude model (f76c5f9)
• Move @JsonCreator inside LiveRequest Builder (d667db8)
• preserve non-text output in streaming responses (b8be90d)
• prevent cross-user session data disclosure in VertexAiSessionService (d1b1d92)
• Resolve NPE when McpTool description is null (8ed64ea)
• Safely handle empty model in GoogleSearchTool request processor (e255192)
• scope ADK Java docs release analyzer to a single language (07a2ec9)
• skills: prevent path traversal in LocalSkillSource (55392f6)
• use daemon threads in OkHttp dispatchers to allow graceful JVM shutdown (9b046b6)
• Use existing secrets and built-in token in ADK docs release analyzer workflow (456234f)
• widen Integer to Long in castValue() for boxed Long parameter (bc32948)
• subscribe to appendEvent Single in runLive (fe6c683)

1.5.0 (2026-06-20)

Features

• add avatar config support to the live streaming flow (fb9274e)
• add GitHub release-docs analyzer (Java) (792d2f4)
• Add thought signature support for chat completions (287987a)
• bump google-genai dependency to 1.58.0 (3abcf4f)
• Enhance BigQuery Agent Analytics Plugin with new event types (ec93f50)
• support optional types in function tool parameters (9a06dd3)
• Update token usage reporting to include thoughts and cache tokens (436b802)

Bug Fixes

• Bypass redundant getSession read in ADK Runner (aaedcaf)
• convert unsupported artifact MIME types to text (a60c246)
• initialize event ID when creating compaction events (fc480ec)
• SkillMdPath should be public (29d3203)
• stop dropping the latest event(s) in VertexAiSessionService.getSession (987ef4e)
• wait for the Runner to persist a step's events before the ADK flow's next step (sequential-tool-execution race) (0a40557)

Performance Improvements

• filter session events server-side by afterTimestamp in VertexAiSessionService.getSession (e12baa2)

1.4.0 (2026-05-29)

Features

• Add GcsOffloader for asynchronously uploading content to Google Cloud Storage (51c9d1a)
• Add GcsOffloader for asynchronously uploading content to Google Cloud Storage (5bad20a)
• Add GcsOffloader for asynchronously uploading content to Google Cloud Storage (a1d2c1c)
• Add JSON cycle detection (1685a4e)
• Add streaming support for ChatCompletionsHTTPClient (384a0c5)
• Add telemetry and metrics recording capabilities (cc3b9ce)
• Add tools and toolset to use SkillSource in ADK agents (198b2fb)
• Add tools and toolset to use SkillSource in ADK agents (5ee51fd)
• Add tools and toolset to use SkillSource in ADK agents (83a4b71)
• Introduce max span limit to ApiServerSpanExporter (ae13073)
• refactor OpenTelemetry (OTel) instrumentation within the ADK core, moving from manual span management to structured helper classes (e6fe9aa)

Bug Fixes

• adjust default ToolExecutionMode to SEQUENTIAL as it was actual and widely used behavior for all ADK Java users before parallel tool execution fix (fe88217)
• inject Dev UI tracer into core engine for embedded telemetry (8bccc3b)
• introduce PARALLEL_SUBSCRIBE ToolExecutionMode; restore previous PARALLEL semantics (d3e7f31)
• mcp: honor custom URL sub-paths in StreamableHttpServerParameters (a0c4b7b)
• pre-merge stateDelta before onUserMessageCallback in Runner (f1155ec)
• Resolve IllegalArgumentException for text MIME types in LangChain4j adapter (6ad2043)
• revert "Suppress empty-text-only chunks from streaming responses while preserving carried metadata" (69638df)
• route HITL confirmation back to originating sub-agent in workflow agents (d608909)
• run tools concurrently in PARALLEL ToolExecutionMode (020499b)
• Suppress empty-text-only chunks from streaming responses while preserving carried metadata (b4791ef)

Documentation

• clarify LlmAgent composition for workflow agents (49ff63b)

1.3.0 (2026-05-13)

Features

• Add ChatCompletionsHTTPClient and support for non-streaming requests (9529c1a)
• Add conversion from LlmRequest to ChatCompletionsRequest (d37f6ee)
• Add SkillSource interface and implementations for loading skills (509c4aa)
• Add support for refusal content using "[[REFUSAL]]:" prefix (e9184c9)
• Refactor BigQueryAgentAnalyticsPlugin for async in preparation for GCS offloading (d837ef0)

Bug Fixes

• Account for nulls in EventActions and State (582cf7c)
• upgrade Mockito and JaCoCo for Java 25 compatibility (8574fc5)

1.2.0 (2026-04-24)

Features

• Add telemetry headers (4009905)
• Adding functionality to support customer content formating (52323b4)
• Allowing McpAsycToolset Builder to take in a McpSessionManager (78766c1)
• Forward state delta from all events to parent session instead of just the last event (f4cd1b7)
• Implement BigQuery auto-schema upgrade and view creation (14027d1)
• Make BigQueryAgentAnalyticsPlugin state per-invocation (629c390)
• Support ChatCompletionChunk to LlmResponse conversion (589328e)
• Support plugins in Java AgentTool similar to Python's implementation (02a08a1)

Bug Fixes

• Allow BuiltInCodeExecutor for Gemini 3 models (1a3dd61)
• Fix ADK Runner race condition for sequential tool execution (69680bb)
• Fix ADK Runner race condition for sequential tool execution (9031cad)
• Removing deprecated Optional methods (8ef99f9)