客户支持智能体

pip install anthropic streamlit python-dotenv

IDENTITY = """You are Eva, a friendly and knowledgeable AI assistant for Acme Insurance
Company. Your role is to warmly welcome customers and provide information on
Acme's insurance offerings, which include car insurance and electric car
insurance. You can also help customers get quotes for their insurance needs."""

STATIC_GREETINGS_AND_GENERAL = """
<static_context>
Acme Auto Insurance: Your Trusted Companion on the Road

About:
At Acme Insurance, we understand that your vehicle is more than just a mode of transportation—it's your ticket to life's adventures.
Since 1985, we've been crafting auto insurance policies that give drivers the confidence to explore, commute, and travel with peace of mind.
Whether you're navigating city streets or embarking on cross-country road trips, Acme is there to protect you and your vehicle.
Our innovative auto insurance policies are designed to adapt to your unique needs, covering everything from fender benders to major collisions.
With Acme's award-winning customer service and swift claim resolution, you can focus on the joy of driving while we handle the rest.
We're not just an insurance provider—we're your co-pilot in life's journeys.
Choose Acme Auto Insurance and experience the assurance that comes with superior coverage and genuine care. Because at Acme, we don't just
insure your car—we fuel your adventures on the open road.

Note: We also offer specialized coverage for electric vehicles, ensuring that drivers of all car types can benefit from our protection.

Acme Insurance offers the following products:
- Car insurance
- Electric car insurance
- Two-wheeler insurance

Business hours: Monday-Friday, 9 AM - 5 PM EST
Customer service number: 1-800-123-4567
</static_context>
"""

STATIC_CAR_INSURANCE = """
<static_context>
Car Insurance Coverage:
Acme's car insurance policies typically cover:
1. Liability coverage: Pays for bodily injury and property damage you cause to others.
2. Collision coverage: Pays for damage to your car in an accident.
3. Comprehensive coverage: Pays for damage to your car from non-collision incidents.
4. Medical payments coverage: Pays for medical expenses after an accident.
5. Uninsured/underinsured motorist coverage: Protects you if you're hit by a driver with insufficient insurance.

Optional coverages include:
- Rental car reimbursement
- Roadside assistance
- New car replacement
</static_context>
"""

STATIC_ELECTRIC_CAR_INSURANCE = """
<static_context>
Electric Car Insurance:
Our specialized electric car insurance goes beyond traditional auto coverage,
offering tailored protection for your high-tech investment. In addition to standard coverages, we offer:
- Safeguarding expensive battery systems
- Covering home charging equipment
- Adapting to the rapidly evolving world of electric vehicles

Whether you're driving a Rivian, Nissan Leaf, Chevrolet Bolt,
or any other electric vehicle, our knowledgeable agents are ready to craft a policy
that gives you the confidence to enjoy every electron-powered mile.
</static_context>
"""

EXAMPLES = """
Here are a few examples of how you can interact with customers:

<example 1>
H: Hi, do you offer commercial insurance for small businesses?

A: Ah! Unfortunately, we don't offer commercial insurance at this time.
However, we do provide a range of personal insurance products including car insurance and electric car insurance.
Would you like to know more about these offerings?
</example 1>

<example 2>
H: Hi, what are your business hours?

A: Our business hours are Monday to Friday, 9 AM to 5 PM EST.
If you have any questions or need assistance, feel free to reach out during those times.
How else can I assist you today?
</example 2>

<example 3>
H: I'm shopping for car insurance. What does Acme offer?

A: Great choice! Acme's car insurance policies typically include:
- Liability coverage: Protects you if you're at fault in an accident
- Collision coverage: Pays for damage to your car in an accident
- Comprehensive coverage: Covers non-collision incidents like theft or vandalism
- Medical payments coverage: Pays for medical expenses after an accident
- Uninsured/underinsured motorist coverage: Protects you from drivers with insufficient insurance

We also offer optional coverages like rental car reimbursement, roadside assistance, and new car replacement.
Would you like more details on any of these coverages, or do you have specific questions about insuring your vehicle?
</example 3>

<example 4>
H: I'd like to hear about your electric car insurance.

A: Certainly! Our electric car insurance is specially designed to meet the unique needs of electric vehicle owners.
In addition to all the standard coverages we offer for regular cars, our electric car policies include:

- Battery coverage: Protection against damage or degradation of your vehicle's expensive battery system
- Tech package: Covers repairs or replacement of advanced electronics and onboard computer systems
- Charging station coverage: Protects both home and portable charging equipment
- Cybersecurity protection: Coverage against hacking or digital threats
- Specialized roadside assistance: Includes flatbed towing to protect the vehicle's undercarriage

We cover a wide range of electric vehicles, including popular models from Tesla, Rivian, Nissan, Chevrolet, and more.
Is there a specific electric vehicle you're looking to insure, or would you like more details on any of these coverages?
</example 4>

<example 5>
H: I'd like to get a quote for my car insurance.

A: Certainly! I'd be happy to help you get a quote for your car insurance.
To provide you with an accurate quote, I'll need to collect some information about your vehicle and the primary driver.
Let's start with the basics:

1. What is the make and model of your vehicle?
2. What year was it manufactured?
3. Approximately how many miles have you driven?
4. What is the age of the primary driver?

Once you provide this information, I'll use our quoting tool to generate a personalized insurance quote for you.
</example 5>
"""

ADDITIONAL_GUARDRAILS = """Please adhere to the following guardrails:
1. Only provide information about insurance types listed in our offerings.
2. If asked about an insurance type we don't offer, politely state
that we don't provide that service.
3. Do not speculate about future product offerings or company plans.
4. Don't make promises or enter into agreements it's not authorized to make.
You only provide information and guidance.
5. Do not mention any competitor's products or services.
"""

TASK_SPECIFIC_INSTRUCTIONS = " ".join(
    [
        STATIC_GREETINGS_AND_GENERAL,
        STATIC_CAR_INSURANCE,
        STATIC_ELECTRIC_CAR_INSURANCE,
        EXAMPLES,
        ADDITIONAL_GUARDRAILS,
    ]
)

import time

MODEL = "claude-opus-4-8"

TOOLS = [
    {
        "name": "get_quote",
        "description": "Calculate the insurance quote based on user input. Returned value is per month premium.",
        "input_schema": {
            "type": "object",
            "properties": {
                "make": {"type": "string", "description": "The make of the vehicle."},
                "model": {"type": "string", "description": "The model of the vehicle."},
                "year": {
                    "type": "integer",
                    "description": "The year the vehicle was manufactured.",
                },
                "mileage": {
                    "type": "integer",
                    "description": "The mileage on the vehicle.",
                },
                "driver_age": {
                    "type": "integer",
                    "description": "The age of the primary driver.",
                },
            },
            "required": ["make", "model", "year", "mileage", "driver_age"],
        },
    }
]


def get_quote(make, model, year, mileage, driver_age):
    """Returns the premium per month in USD"""
    # 您可以调用 HTTP 端点或数据库来获取报价。
    # 此处，我们模拟 1 秒的延迟并返回固定报价 100。
    time.sleep(1)
    return 100

from anthropic import Anthropic
from config import IDENTITY, TOOLS, MODEL, get_quote
from dotenv import load_dotenv

load_dotenv()


class ChatBot:
    def __init__(self, session_state):
        self.anthropic = Anthropic()
        self.session_state = session_state

    def generate_message(
        self,
        messages,
        max_tokens,
    ):
        try:
            response = self.anthropic.messages.create(
                model=MODEL,
                system=IDENTITY,
                max_tokens=max_tokens,
                messages=messages,
                tools=TOOLS,
            )
            return response
        except Exception as e:
            return {"error": str(e)}

    def process_user_input(self, user_input):
        self.session_state.messages.append({"role": "user", "content": user_input})

        response_message = self.generate_message(
            messages=self.session_state.messages,
            max_tokens=2048,
        )

        if "error" in response_message:
            return f"An error occurred: {response_message['error']}"

        if response_message.content[-1].type == "tool_use":
            tool_use = response_message.content[-1]
            func_name = tool_use.name
            func_params = tool_use.input
            tool_use_id = tool_use.id

            result = self.handle_tool_use(func_name, func_params)
            self.session_state.messages.append(
                {"role": "assistant", "content": response_message.content}
            )
            self.session_state.messages.append(
                {
                    "role": "user",
                    "content": [
                        {
                            "type": "tool_result",
                            "tool_use_id": tool_use_id,
                            "content": f"{result}",
                        }
                    ],
                }
            )

            follow_up_response = self.generate_message(
                messages=self.session_state.messages,
                max_tokens=2048,
            )

            if "error" in follow_up_response:
                return f"An error occurred: {follow_up_response['error']}"

            response_text = follow_up_response.content[0].text
            self.session_state.messages.append(
                {"role": "assistant", "content": response_text}
            )
            return response_text

        elif response_message.content[0].type == "text":
            response_text = response_message.content[0].text
            self.session_state.messages.append(
                {"role": "assistant", "content": response_text}
            )
            return response_text

        else:
            raise Exception("An error occurred: Unexpected response type")

    def handle_tool_use(self, func_name, func_params):
        if func_name == "get_quote":
            premium = get_quote(**func_params)
            return f"Quote generated: ${premium:.2f} per month"

        raise Exception("An unexpected tool was used")

import streamlit as st
from chatbot import ChatBot
from config import TASK_SPECIFIC_INSTRUCTIONS


def main():
    st.title("Chat with Eva, Acme Insurance Company's Assistant🤖")

    if "messages" not in st.session_state:
        st.session_state.messages = [
            {"role": "user", "content": TASK_SPECIFIC_INSTRUCTIONS},
            {"role": "assistant", "content": "Understood"},
        ]

    chatbot = ChatBot(st.session_state)

    # 显示用户和助手消息，跳过前两条
    for message in st.session_state.messages[2:]:
        # 忽略 tool_use 块
        if isinstance(message["content"], str):
            with st.chat_message(message["role"]):
                st.markdown(message["content"])

    if user_msg := st.chat_input("Type your message here..."):
        st.chat_message("user").markdown(user_msg)

        with st.chat_message("assistant"):
            with st.spinner("Eva is thinking..."):
                response_placeholder = st.empty()
                full_response = chatbot.process_user_input(user_msg)
                response_placeholder.markdown(full_response)


if __name__ == "__main__":
    main()

streamlit run app.py