Chatluna

ChatLuna is an open-source plugin for the Koishi chatbot framework that enables multi-platform large language model (LLM) chat services. It integrates with major AI providers including Deepseek, OpenAI, Google Gemini, and Anthropic Claude, allowing users to switch between models seamlessly. Designed for both developers and power users, ChatLuna offers extensible architecture for adding new model platforms and tools. It supports complex agentic workflows such as sandboxed tool calling, MCP (Model Context Protocol) integration, and web search. The plugin also handles multimodal inputs (images) and renders output in text, image, or voice formats. Licensed under CC-BY-SA-4.0, it is actively maintained on GitHub with a community-driven development model. Targeted at Koishi users and bot developers, ChatLuna provides a low-code setup through Koishi's plugin marketplace. Users can configure multiple model endpoints without writing complex configuration files. Its Agent mode allows LLMs to call arbitrary tools, making it suitable for tasks like code execution, data retrieval, and interactive assistants. The plugin differentiates itself through its focus on extensibility and rendering flexibility while remaining free and open-source. ChatLuna's architecture is modular: each model provider is a separate adapter, and tools are registered via a plugin system. This design enables community contributions and custom integrations. The plugin's rendering pipeline converts model responses into rich outputs (e.g., text with image attachments or speech) via Koishi's messaging framework. For developers, the plugin exposes APIs for creating custom agents and tool integrations. What sets ChatLuna apart is its all-in-one approach within the Koishi ecosystem: it replaces multiple single-purpose plugins by offering chat, tools, and multimodal support in one package. However, it requires Koishi as a host and is not a standalone application.