UTCP File Plugin

A file-based resource plugin for UTCP. This plugin allows you to define tools that return the content of a specified local file.

Features

• Local File Content: Define tools that read and return the content of local files.
• UTCP Manual Discovery: Load tool definitions from local UTCP manual files in JSON or YAML format.
• OpenAPI Support: Automatically converts local OpenAPI specs to UTCP tools with optional authentication.
• Static & Simple: Ideal for returning mock data, configuration, or any static text content from a file.
• Version Control: Tool definitions and their corresponding content files can be versioned with your code.
• No File Authentication: Designed for simple, local file access without authentication for file reading.
• Tool Authentication: Supports authentication for generated tools from OpenAPI specs via auth_tools.

Installation

pip install utcp-file

How It Works

The File plugin operates in two main ways:

1. Tool Discovery (register_manual): It can read a standard UTCP manual file (e.g., my-tools.json) to learn about available tools. This is how the UtcpClient discovers what tools can be called.
2. Tool Execution (call_tool): When you call a tool, the plugin looks at the tool_call_template associated with that tool. It expects a file template, and it will read and return the entire content of the file_path specified in that template.

Important: The call_tool function does not use the arguments you pass to it. It simply returns the full content of the file defined in the tool's template.

Quick Start

Here is a complete example demonstrating how to define and use a tool that returns the content of a file.

1. Create a Content File

First, create a file with some content that you want your tool to return.

./mock_data/user.json:

{
  "id": 123,
  "name": "John Doe",
  "email": "john.doe@example.com"
}

2. Create a UTCP Manual

Next, define a UTCP manual that describes your tool. The tool_call_template must be of type file and point to the content file you just created.

./manuals/local_tools.json:

{
  "manual_version": "1.0.0",
  "utcp_version": "1.0.2",
  "tools": [
    {
      "name": "get_mock_user",
      "description": "Returns a mock user profile from a local file.",
      "tool_call_template": {
        "call_template_type": "file",
        "file_path": "./mock_data/user.json"
      }
    }
  ]
}

3. Use the Tool in Python

Finally, use the UtcpClient to load the manual and call the tool.

import asyncio
from utcp.utcp_client import UtcpClient

async def main():
    # Create a client, providing the path to the manual.
    # The file plugin is used automatically for the "file" call_template_type.
    client = await UtcpClient.create(config={
        "manual_call_templates": [{
            "name": "local_file_tools",
            "call_template_type": "file",
            "file_path": "./manuals/local_tools.json"
        }]
    })

    # List the tools to confirm it was loaded
    tools = await client.list_tools()
    print("Available tools:", [tool.name for tool in tools])

    # Call the tool. The result will be the content of './mock_data/user.json'
    result = await client.call_tool("local_file_tools.get_mock_user", {})
    
    print("\nTool Result:")
    print(result)

if __name__ == "__main__":
    asyncio.run(main())

Expected Output:

Available tools: ['local_file_tools.get_mock_user']

Tool Result:
{
  "id": 123,
  "name": "John Doe",
  "email": "john.doe@example.com"
}

Use Cases

• Mocking: Return mock data for tests or local development without needing a live server.
• Configuration: Load static configuration files as tool outputs.
• Templates: Retrieve text templates (e.g., for emails or reports).

Related Documentation

• Main UTCP Documentation
• Core Package Documentation
• HTTP Plugin - For calling real web APIs.
• Text Plugin - For direct text content (browser-compatible).
• CLI Plugin - For executing command-line tools.