Action Restrictions and Permissions › The Problem with Unrestricted Actions

## Using Claude Sonnet 4.5 for its strong tool use capabilities
import os
from anthropic import Anthropic
import smtplib
from email.mime.text import MIMEText

def send_email(to_address, subject, body):
    """Send an email via SMTP"""
    msg = MIMEText(body)
    msg['Subject'] = subject
    msg['From'] = 'your.email@example.com'
    msg['To'] = to_address
    
    with smtplib.SMTP('smtp.example.com', 587) as server:
        server.starttls()
        server.login('your.email@example.com', 'PASSWORD')
        server.send_message(msg)
    
    return f"Email sent to {to_address}"

## Define the tool for the agent
tools = [{
    "name": "send_email",
    "description": "Send an email to a specified address",
    "input_schema": {
        "type": "object",
        "properties": {
            "to_address": {"type": "string"},
            "subject": {"type": "string"},
            "body": {"type": "string"}
        },
        "required": ["to_address", "subject", "body"]
    }
}]