GPT OSS

Modular, extensible OpenAI-compatible tool calling service for local and remote LLMs.

Features

• Automatic discovery and registration of tool services via decorators
• Service registry and dynamic schema generation
• Chat orchestration with tool execution
• Harmony-style message separation (system, developer, user)
• Flexible configuration via environment variables or .env
• Support for custom tool directories

Usage

from services.chat_service import ChatService
from services.tool_service import ToolService

# Optionally discover tools in a custom directory
custom_tool_dirs = ["/path/to/your/tools"]
tool_service = ToolService(tool_dirs=custom_tool_dirs)
tools = tool_service.get_tool_schema()

chat_service = ChatService(api_key="your-key", base_url="http://localhost:8080/v1", model="gpt-oss-20b", tools=tools)

messages = [
    {"role": "system", "content": "You are a concise assistant."},
    {"role": "user", "content": "Add 10 and 5."}
]

response = chat_service.chat_completion(messages)
print(response)

CLI Example

python main.py

Custom Tools

• Create a Python file in your tools directory
• Use the @register_tool decorator from tools.__base__
• Example:

from tools.__base__ import ToolBase, register_tool

@register_tool
class MyTool(ToolBase):
    name = "my_tool"
    description = "Does something useful."
    parameters = { ... }
    def my_tool(self, ...):
        ...

License

MIT