Google Antigravity SDK 0.1.9

Changelog: Model-call retry/backoff configuration, LiteRT warm-up scaling, and tool execution error handling

Release 0.1.9 of the Google Antigravity Python SDK adds model-call retry/backoff configuration, improves tool registration for custom functions, adds missing BuiltinTools exports, fixes user audio payload processing, and adds connection DebugConfig support along with ToolExecutionError handling.

Improvements(5)

• Model-call retry and backoff configuration: Exposes configurable retry and backoff parameters in LocalAgentConfig for model calls.
• LiteRT warm-up timeout scaling: Dynamically scales LiteRT engine warm-up timeouts based on context size and synchronizes warm-up cleanup.
• Improved tool registration: Enhances automatic tool registration and docstring parsing for custom Python functions.
• BuiltinTools typing exports: Exports BuiltinTools at top-level package and typing boundaries for subagent tool configuration.
• Connection DebugConfig: Adds base DebugConfig options for enhanced connection debugging and logging.

Fixes(2)

• Audio payload processing: Fixes processing for user audio payloads in interactive agent sessions.
• ToolExecutionError handling: Introduces ToolExecutionError to SDK error types for explicit tool failure handling.

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