GoogleAntigravity

Google Antigravity SDK release 0.1.2 updates

Thursday, 4 June 2026

AI summary

Written by AI from the official notes. Check them for exact details.

Google Antigravity SDK 0.1.2 adds Windows support and streamlines safety policy configurations.

Windows platform support for x86_64 and ARM64 added.
Programmatic stream cancellation via ChatResponse.cancel() introduced.
Simplified safety policy configurations for Model Context Protocol.
Deprecated MCP SSE transport removed.

Why it matters: Developers using Antigravity SDK should update to utilize new features and improved compatibility.

Official notes on antigravity.google

Full release notes4 changes

This release adds Windows platform support, introduces programmatic turn-level stream cancellation, simplifies safety policy configurations for the Model Context Protocol (MCP), and removes the deprecated MCP SSE transport.

Windows Platform Support: Native compatibility added for Windows x86_64 and ARM64 environments. Path and file URI resolution now correctly handles drive letters and directory separators under Windows.
Programmatic Turn-Level Cancellation: Added programmatic stream cancellation via ChatResponse.cancel(). This programmatically aborts active generation turns directly from the client and raises AntigravityCancelledError (subclass of asyncio.CancelledError) to cleanly signal cancellation in the async flow (examples/getting_started/cancellation.py).
Direct MCP Safety Policy Configuration: Overloaded policy.allow, policy.deny, and policy.ask_user to accept server configurations (BaseMcpServerConfig) directly instead of typing namespaced string paths. Policy evaluation follows a 9-level precedence model (Specific > Prefix Wildcard > Global Wildcard) with longest-match prefix validation to protect against collisions.
Deprecation of SSE Transport: Removed the legacy McpSseServer configuration and connection handlers in favor of standard Stdio and Streamable HTTP connection strategies.

Full release notes4 changes

Windows Platform Support: Native compatibility added for Windows x86_64 and ARM64 environments. Path and file URI resolution now correctly handles drive letters and directory separators under Windows.
Programmatic Turn-Level Cancellation: Added programmatic stream cancellation via ChatResponse.cancel(). This programmatically aborts active generation turns directly from the client and raises AntigravityCancelledError (subclass of asyncio.CancelledError) to cleanly signal cancellation in the async flow (examples/getting_started/cancellation.py).
Direct MCP Safety Policy Configuration: Overloaded policy.allow, policy.deny, and policy.ask_user to accept server configurations (BaseMcpServerConfig) directly instead of typing namespaced string paths. Policy evaluation follows a 9-level precedence model (Specific > Prefix Wildcard > Global Wildcard) with longest-match prefix validation to protect against collisions.
Deprecation of SSE Transport: Removed the legacy McpSseServer configuration and connection handlers in favor of standard Stdio and Streamable HTTP connection strategies.