adk-python/CHANGELOG.md

Changelog

0.4.0

⚠ BREAKING CHANGES

• Set the max size of strings in database columns. MySQL mandates that all VARCHAR-type fields must specify their lengths.
• Extract content encode/decode logic to a shared util, resolve issues with JSON serialization, and update key length for DB table to avoid key too long issue in mysql.
• Enhance FunctionTool to verify if the model is providing all the mandatory arguments.

Features

• Update ADK setup guide to improve onboarding experience.
• feat: add ordering to recent events in database session service.
• feat(llm_flows): support async before/after tool callbacks.
• feat: Added --replay and --resume options to adk run cli. Check adk run --help for more details.
• Created a new Integration Connector Tool (underlying of the ApplicationIntegrationToolSet) so that we do not force LLM to provide default value.

Bug Fixes

• Don't send content with empty text to LLM.
• Fix google search reading undefined for renderedContent.

Miscellaneous Chores

• Docstring improvements, typo fixings, github action to enfore code styles on formatting and imports, etc.

0.3.0

⚠ BREAKING CHANGES

• Auth: expose access_token and refresh_token at top level of auth credentails, instead of a dict (commit).

Features

• Added support for running agents with MCPToolset easily on adk web.
• Added custom_metadata field to LlmResponse, which can be used to tag LlmResponse via after_model_callback.
• Added --session_db_url to adk deploy cloud_run option.
• Many Dev UI improvements:
  • Better google search result rendering.
  • Show websocket close reason in Dev UI.
  • Better error message showing for audio/video.

Bug Fixes

• Fixed MCP tool json schema parsing issue.
• Fixed issues in DatabaseSessionService that leads to crash.
• Fixed functions.py.
• Fixed skip_summarization behavior in AgentTool.

Miscellaneous Chores

• README.md impprovements.
• Various code improvements.
• Various typo fixes.
• Bump min version of google-genai to 1.11.0.

0.2.0

⚠ BREAKING CHANGES

• Fix typo in method name in Event: has_trailing_code_exeuction_result --> has_trailing_code_execution_result.

Features

• adk CLI:
  • Introduce adk create cli tool to help creating agents.
  • Adds --verbosity option to adk deploy cloud_run to show detailed cloud run deploy logging.
• Improve the initialization error message for DatabaseSessionService.
• Lazy loading for Google 1P tools to minimize the initial latency.
• Support emitting state-change-only events from planners.
• Lots of Dev UI updates, including:
  • Show planner thoughts and actions in the Dev UI.
  • Support MCP tools in Dev UI. (NOTE: agent.py interface is temp solution and is subject to change)
  • Auto-select the only app if only one app is available.
  • Show grounding links generated by Google Search Tool.
• .env file is reloaded on every agent run.

Bug Fixes

• LiteLlm: arg parsing error and python 3.9 compatibility.
• DatabaseSessionService: adds the missing fields; fixes event with empty content not being persisted.
• Google API Discovery response parsing issue.
• load_memory_tool rendering issue in Dev UI.
• Markdown text overflows in Dev UI.

Miscellaneous Chores

• Adds unit tests in Github action.
• Improves test coverage.
• Various typo fixes.

0.1.0

Features

• Initial release of the Agent Development Kit (ADK).
• Multi-agent, agent-as-workflow, and custom agent support
• Tool authentication support
• Rich tool support, e.g. built-in tools, google-cloud tools, third-party tools, and MCP tools
• Rich callback support
• Built-in code execution capability
• Asynchronous runtime and execution
• Session, and memory support
• Built-in evaluation support
• Development UI that makes local development easy
• Deploy to Google Cloud Run, Agent Engine
• (Experimental) Live(Bidi) auido/video agent support and Compositional Function Calling(CFC) support