Fast Agents

A clean, standalone AI framework package for building AI agents with OpenAI's API.

Author: Patrik Mojzis
Website: https://fast-agents.patrikmojzis.com
Repository: https://github.com/patrikmojzis/fast-agents

Features

• Simple and elegant agent framework
• Tool-based extensibility
• Built-in validation and transformation
• Async/await support
• Type-safe with Pydantic models

Installation

Local Development Installation

pip install -e .

From PyPI (when published)

pip install fast-agents

Quick Start

from fast_agents import Agent, Tool, ToolResponse

# Create a custom tool
class MyTool(Tool):
    name = "my_tool"
    description = "A sample tool"
    
    async def handle(self, **kwargs) -> ToolResponse:
        return ToolResponse(output="Hello from my tool!")

# Create an agent
agent = Agent(
    name="my_agent",
    instructions="You are a helpful assistant.",
    tools=[MyTool()]
)

# Use the agent in your application

Dependencies

• pydantic>=2.0.0 - Data validation and settings management
• openai>=1.0.0 - OpenAI API client
• tiktoken>=0.4.0 - Token counting for OpenAI models

License

MIT License