antigravity 0.3.1

A native Dart client SDK for Google Antigravity, fully decoupled from the Flutter framework for server, CLI, and mobile compatibility.

0.3.1

• Dart 3 Modernization:
  • Refactored core classes Connection and ConnectionStrategy to use Dart 3 abstract interface class modifiers.
  • Marked MediaContent as a sealed class to restrict subclass hierarchy and support compiler-level exhaustiveness checks.
  • Modernized registerHook, allow, deny, and askUser to leverage case type pattern matching inside switch statements.
  • Refactored policy bucket index resolution (_bucketIndex), file change triggers (onFileChange), shorthand model builder (_buildShorthandModels), and step state mappings (Step.fromMap) to use clean switch expressions and logical OR patterns.
  • Updated local connection classes to implement rather than extend the new interface classes.
  • Added conditional imports in lib/src/types/content.dart to support running the package on the web.

0.3.0

• Synchronize updates from Python SDK (v0.1.5):
  • Added new read_url_content builtin tool and its ReadUrlContentResult structured output.
  • Added StepType.thinking to enum representation for telemetry tracking.
  • Implemented the HookRouter to process WebSocket-based CallHookRequest turn and tool lifecycle hooks delegated by the harness.
  • Added support for telemetry PreStepHook and PostStepHook inside HookRunner and connection parser.
  • Implemented _StepTracker to prevent duplicate step hooks or non-linear state transitions.
  • Supported error and cancelled propagation in trajectory_state_update events.
  • Historical Step Absorption: Aligned startup handshake to await and parse pre-existing conversation history and usage metadata from initialize_conversation_response, populating them immediately in Conversation on start.

0.2.2

• Update to support web platform use

0.2.1

• Reintroduce generated files in package

0.2.0

• Model Configuration Overhaul: Replaced the monolithic GeminiConfig with a more flexible ModelTarget and polymorphic ModelEndpoint class hierarchy (GeminiAPIEndpoint, VertexEndpoint).
• Subagents Feature: Introduced SubagentConfig and SubagentCapabilities allowing definition and inclusion of subagents in the main agent's configuration.
• New Builtin Tools: Added SearchWeb tool and related SearchWebResult structured output.
• Enhanced Configuration: Support for environment variables (env) in McpStdioServer. Removed imageModel from CapabilitiesConfig to favor the new generic model targeting features.

0.1.3

• Added support for Vertex AI configuration (project, location, vertex options) in GeminiConfig.
• Refactored Model Context Protocol (MCP) server configurations to run connections natively on the Go-based harness, removing client-side McpBridge references.
• Added SlashCommand structure to input content primitives to support built-in planning flows.
• Integrated CLI Spinner into runInteractiveLoop with step-by-step progress tracking via agent.conversation.receiveSteps().
• Enhanced policy engine with a 9-level priority model supporting prefix wildcards and custom MCP policy validators.
• Added AntigravityCancelledException and AntigravityExecutionException for robust error handling.

0.0.1

• Initial release of the Antigravity Dart SDK.