LangTools is a Swift framework for working with Large Language Models (LLMs) and AI services. It provides a unified interface for multiple AI providers and includes tools for building agents and specialized AI assistants.
- 🤖 Multiple LLM Support: OpenAI, Anthropic, X.AI, Google Gemini, and Ollama
- 🔧 Unified Interface: Common protocols for working with different AI providers
- 🤝 Extensible Agent System: Build specialized AI assistants with tools and delegation
- 📝 Streaming Support: Handle streaming responses from AI models
- 🛠️ Tool Integration: Add custom capabilities to your AI interactions
Add LangTools to your Package.swift:
dependencies: [
.package(url: "https://github.com/rchatham/langtools.swift.git", from: "0.2.0")
]// Initialize a language model service
let anthropic = Anthropic(apiKey: "your-key")
// Create a simple chat request
let messages = [
anthropic.systemMessage("You are a helpful assistant."),
anthropic.userMessage("Hello!")
]
// Get a response
let response = try await anthropic.perform(request:
Anthropic.MessageRequest(
model: .claude35Sonnet_latest,
messages: messages
)
)
print(response.message?.content.text ?? "No response")struct SimpleAgent: Agent {
let langTool: Anthropic
let model: Anthropic.Model
let name = "simpleAgent"
let description = "A simple agent that responds to user queries"
let instructions = "You are a simple agent that responds to user queries."
var delegateAgents: [any Agent] = []
var tools: [any LangToolsTool]? = nil
}
// Use your agent
let agent = SimpleAgent(
langTool: Anthropic(apiKey: "your-key"),
model: .claude35Sonnet_latest
)
let context = AgentContext(messages: [
LangToolsMessageImpl(role: .user, string: "Hello!")
])
let response = try await agent.execute(context: context)Simulator.Screen.Recording.-.iPhone.16.-.2025-02-17.at.12.51.45.mp4
See individual module README files for detailed documentation and examples:
Contributions are welcome! See our Contributing Guide for details.
This project is licensed under the MIT License - see the LICENSE file for details.