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Strands Agents SDK

Universal Tool Calling Protocol (UTCP)

The Universal Tool Calling Protocol (UTCP) is a lightweight, secure, and scalable standard that enables AI agents to discover and call tools directly using their native protocols - no wrapper servers required. UTCP acts as a “manual” that tells agents how to call your tools directly, extending OpenAPI for AI agents while maintaining full backward compatibility.

This community plugin integrates UTCP with Strands Agents SDK , providing standardized tool discovery and execution capabilities.

Installation

Section titled “Installation”
Terminal window
pip install strands-agents strands-utcp

Usage

Section titled “Usage” 
from strands import Agent
from strands_utcp import UtcpToolAdapter


# Configure UTCP tool adapter
config = {
    "manual_call_templates": [
        {
            "name": "weather_api",
            "call_template_type": "http",
            "url": "https://api.weather.com/utcp",
            "http_method": "GET"
        }
    ]
}


# Use UTCP tools with Strands agent
async def main():
    async with UtcpToolAdapter(config) as adapter:
        # Get available tools
        tools = adapter.list_tools()
        print(f"Found {len(tools)} UTCP tools")


        # Create agent with UTCP tools
        agent = Agent(tools=adapter.to_strands_tools())


        # Use the agent
        response = await agent.invoke_async("What's the weather like today?")
        print(response.message)


import asyncio
asyncio.run(main())

Key Features

Section titled “Key Features”
  • Universal Tool Access: Connect to any UTCP-compatible tool source
  • OpenAPI/Swagger Support: Automatic tool discovery from API specifications
  • Multiple Sources: Connect to multiple tool sources simultaneously
  • Async/Await Support: Full async support with context managers
  • Type Safe: Full type hints and validation
  • Easy Integration: Drop-in tool adapter for Strands agents

Resources

Section titled “Resources”