langchainrust 0.2.10

A LangChain-inspired framework for building LLM applications in Rust. Supports OpenAI, Agents, Tools, Memory, Chains, RAG, BM25, Hybrid Retrieval, LangGraph, and native Function Calling.
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// src/core/mod.rs

pub mod runnables;
pub mod language_models;
pub mod tools;

pub use runnables::{Runnable, RunnableConfig};
pub use language_models::{BaseLanguageModel, BaseChatModel};
pub use tools::{
    BaseTool, Tool, ToolError, ToolRegistry,
    ToolDefinition, ToolCall, ToolCallResult, FunctionDefinition, FunctionCall,
    StructuredOutput,
};