Feat: Google Search Agent Tool#316
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kalenkevich
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May 11, 2026
| const searchTool = toolUnion as unknown as GoogleSearchTool; | ||
| if (searchTool.bypassMultiToolsLimit) { | ||
| const {createGoogleSearchAgent, GoogleSearchAgentTool} = | ||
| await import('../tools/google_search_agent_tool.js'); |
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please do not use inline imports
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removed the inline import
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May 12, 2026 09:28
- Implement GoogleSearchAgentTool to wrap search sub-agent. - Implement automatic wrapping of GoogleSearchTool in LlmAgent when used with other tools. - Add propagateGroundingMetadata support to AgentTool. - Add comprehensive unit tests with 100% coverage for new code.
…tadata propagation
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Link to Issue or Description of Change
Problem: The built-in
GoogleSearchToolcannot be used together with other tools in the same agent due to model limitations in Gemini 1.x. Inadk-python, a workaround was implemented to automatically wrap theGoogleSearchToolin a specialized sub-agent (GoogleSearchAgentTool) when multiple tools are present, allowing it to function alongside others. This capability was missing inadk-js.Solution: Ported the
GoogleSearchAgentToolfeature fromadk-pythontoadk-js. This includes:GoogleSearchToolinGoogleSearchAgentToolwhenbypassMultiToolsLimitis true and multiple tools are present.Testing Plan
Please describe the tests that you ran to verify your changes. This is required for all PRs that are not small documentation or typo fixes.
Unit Tests:
I ran the specific test file
core/test/tools/google_search_agent_tool_test.tsand all 13 tests passed.Coverage for
core/src/tools/google_search_agent_tool.tsandcore/src/tools/google_search_tool.tsachieved 100%.Integration Tests (Serving as Manual E2E):
An integration test was created at
tests/integration/tools/google_search_agent_tool_test.tsto simulate the full flow of automatic wrapping and grounding metadata propagation using mocked responses. This test serves as the verification for the end-to-end behavior, as manual testing with live models was not performed.Checklist