open_responses_dart 0.1.1

A Dart client library for the Open Responses API specification. Multi-provider, interoperable LLM interface for Flutter and Dart applications.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.1.1

• Updated URL handling: Base URL now defaults to https://api.openai.com (host root), and the client automatically appends /v1/responses to the endpoint.
• Made apiKey optional in Client and StreamingClient constructors to support local servers (e.g., LM Studio).
• Improved support for custom base URLs by removing trailing slashes automatically.
• Fixed TextFormatType serialization (snake_case).

0.1.0 - 2026-02-01

Added

• Initial release of the Dart client for Open Responses API

[Unreleased]

• Support for creating chat completions via OpenAI-compatible API
• Streaming support with Server-Sent Events (SSE)
• Function calling support with tools
• Comprehensive type system for requests, responses, and events
• Dot shorthand syntax examples (Dart 3.10+)

Features

• Client: Simple HTTP client for API interactions
• StreamingClient: Real-time streaming with SSE
• Types: Full type safety for all API entities
  • Input with support for text or items
  • Item types: MessageItem, FunctionCallItem, etc.
  • Content types: InputContent, OutputContent
  • Enums: MessageRole, ToolChoice, ImageDetail, etc.
• Tools: Function tool creation with FunctionTool builder

Dependencies

• http: ^1.6.0 - HTTP client
• json_annotation: ^4.10.0 - JSON serialization
• freezed_annotation: ^3.1.0 - Immutable data classes