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fix(google): keep declared property order in Live API tool schemas - #7387
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A raw tool that already sets propertyOrdering failed FunctionDeclaration validation with a duplicate alias, and one that set property_ordering had its order overwritten. Only derive the order when neither spelling is set. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
JustinScitech
approved these changes
Sep 21, 2026
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Ports livekit/agents-js#2551 so Gemini Live API tool schemas preserve declared property order, including nested objects, instead of allowing Gemini to reorder arguments alphabetically.
Source diff coverage
.changeset/gemini-live-property-ordering.md. The Python repository does not use Changesets and package versions are updated by synchronized release commits, so there is no target counterpart.plugins/google/src/utils.ts->livekit-plugins/livekit-plugins-google/livekit/plugins/google/utils.py. The Python Gemini schema simplifier now setsproperty_orderingfrom each object schema's property insertion order after recursively simplifying its children.plugins/google/src/utils.test.ts->tests/test_schema_gemini.py. Updated affected schema expectations and ported the Live API declaration test for top-level and nested property ordering through the Pythoncreate_tools_configpath.Validation
uv run pytest tests/test_schema_gemini.py(14 passed)uv build --package livekit-plugins-googlemake checkThe unfiltered Google package test selection completed 174 test bodies successfully but reports one teardown error in pre-existing
tests/test_plugin_google_gemini_tts.py::test_gemini_tts_success: the test leavesTTS._synthesize_taskandTTS._metrics_taskpending. The same teardown error reproduces when that file is run alone and is unrelated to schema conversion.Ported from livekit/agents-js#2551
Original PR description
Fixes livekit/agents-js#2529
What
Gemini generates a tool call's arguments in alphabetical order unless the schema carries
propertyOrdering. A Live API tool declared as{ reasoning, answer }was generatedanswerfirst.This sets
propertyOrderingfrom each object schema's own property order (nested objects included) when building the Live APISchema.Tests
uses legacy parameters on the Live API(updated: expectspropertyOrdering: ['fields'])pnpm vitest run plugins/google/src/utils.test.tsorders Live API parameters as declared, nested objects included(new:['reasoning', 'answer', 'details'], nested['zeta', 'alpha'])pnpm vitest run plugins/google/src/utils.test.tsutils.test.tssuite (6 tests)pnpm vitest run plugins/google/src/utils.test.tspnpm exec eslint plugins/google/src/utils.ts plugins/google/src/utils.test.ts/pnpm exec prettier --check ...