v0.4.0

New major features

• Plugins: https://google.github.io/adk-docs/plugins/
• Tool Confirmation (human in the loop): https://google.github.io/adk-docs/tools-custom/confirmation/
• VertexAI Session Service: https://google.github.io/adk-docs/sessions/session/#vertexaisessionservice

note: adk docs will be updated with Go examples

What's Changed

• docs: update contributing.md by @dpasiukevich in #431
• fix: align and correct eventBelongsToBranch to match adk-python by @sjy3 in #437
• fix: update time truncation in database session service by @dpasiukevich in #448
• fix: Only last state change for multiple tool calls is being committed to state by @majiayu000 in #449
• fix: remote agent responses are not stored in streaming mode by @yarolegovich in #420
• fix: support CitationMetadata by @nahapetyan-serob in #463
• fix: parse events with errors in agenttool by @dpasiukevich in #468
• chore: correct LoadArtifactHandler Route Name by @IAmSurajBobade in #464
• artifact: don't allow file names with path separators by @rakyll in #472
• Implement graceful shutdown for web server via context cancellation by @imrenagi in #462
• fix: resolve nil pointer in tool.Context.SearchMemory in webui mode by @sjy3 in #476
• Implement OutputResponseProcessor to enable use of OutputSchema and tools by @caglar10ur in #441
• feat: include gen_ai.conversation.id in OTEL spans (#421) by @JEETDESAI25 in #428
• fix: return nil when server has been shutdown by @dpasiukevich in #487
• fix(database): cascade delete events when deleting session by @iuga in #483
• Make the type comparison case insensitive by @caglar10ur in #488
• feat: add FilterToolset helper by @dpasiukevich in #489
• fix: mark cancellation events as Final in Executor by @nahapetyan-serob in #494
• Update adk-web to 958c8d6278b45c59e413f52ace147c28c5767a4d by @caglar10ur in #491
• feat: add plugin package by @baptmont in #480
• Avoid maintaining the copyright year manually by @git-hulk in #495
• Add vertexAi session service by @baptmont in #235
• fix run mode config ineffective issue in a2a remote agent by @sjy3 in #485
• Add MCP session reconnection with Ping health check by @Nerja in #417
• update docs for llmagent by @indurireddy-TF in #500
• feat: enable plugin support in launcher config with tests by @MarcoCerino23 in #503
• fix: pass pluginConfig instead of only plugins by @dpasiukevich in #504
• fix: long-running operation handling as a2a input-required task by @yarolegovich in #499
• Fix MCP reconnection on EOF error by @Nerja in #505
• docs: upd docs for vertexai by @dpasiukevich in #515
• Removed plugin manager's after callback symmetry by @baptmont in #514
• feat: add human in the loop confirmation by @baptmont in #490
• Add custom part converters to ADK Executor. by @zbirkenbuel in #512
• feat: provide access to session events from executor callbacks by @yarolegovich in #521

New Contributors

• @sjy3 made their first contribution in #437
• @majiayu000 made their first contribution in #449
• @nahapetyan-serob made their first contribution in #463
• @IAmSurajBobade made their first contribution in #464
• @imrenagi made their first contribution in #462
• @JEETDESAI25 made their first contribution in #428
• @iuga made their first contribution in #483
• @Nerja made their first contribution in #417
• @indurireddy-TF made their first contribution in #500
• @MarcoCerino23 made their first contribution in #503
• @zbirkenbuel made their first contribution in #512

Full Changelog: v0.3.0...v0.4.0