ChatGPT插件

本例展示了如何在LangChain抽象中使用ChatGPT插件。

注 1: 目前仅适用于没有认证的插件。

注 2: 几乎肯定有其他方法可以做到这一点，这只是第一次尝试。如果你有更好的想法，请提交PR！

import { ChatOpenAI } from "langchain/chat_models/openai";
import { initializeAgentExecutorWithOptions } from "langchain/agents";
import {
  RequestsGetTool,
  RequestsPostTool,
  AIPluginTool,
} from "langchain/tools";

export const run = async () => {
  const tools = [
    new RequestsGetTool(),
    new RequestsPostTool(),
    await AIPluginTool.fromPluginUrl(
      "https://www.klarna.com/.well-known/ai-plugin.json"
    ),
  ];
  const agent = await initializeAgentExecutorWithOptions(
    tools,
    new ChatOpenAI({ temperature: 0 }),
    { agentType: "chat-zero-shot-react-description", verbose: true }
  );

  const result = await agent.call({
    input: "what t shirts are available in klarna?",
  });

  console.log({ result });
};

Entering new agent_executor chain...
Thought: Klarna is a payment provider, not a store. I need to check if there is a Klarna Shopping API that I can use to search for t-shirts.
Action:
```

{
"action": "KlarnaProducts",
"action_input": ""
}

```

Usage Guide: Use the Klarna plugin to get relevant product suggestions for any shopping or researching purpose. The query to be sent should not include stopwords like articles, prepositions and determinants. The api works best when searching for words that are related to products, like their name, brand, model or category. Links will always be returned and should be shown to the user.

OpenAPI Spec: {"openapi":"3.0.1","info":{"version":"v0","title":"Open AI Klarna product Api"},"servers":[{"url":"https://www.klarna.com/us/shopping"}],"tags":[{"name":"open-ai-product-endpoint","description":"Open AI Product Endpoint. Query for products."}],"paths":{"/public/openai/v0/products":{"get":{"tags":["open-ai-product-endpoint"],"summary":"API for fetching Klarna product information","operationId":"productsUsingGET","parameters":[{"name":"q","in":"query","description":"query, must be between 2 and 100 characters","required":true,"schema":{"type":"string"}},{"name":"size","in":"query","description":"number of products returned","required":false,"schema":{"type":"integer"}},{"name":"budget","in":"query","description":"maximum price of the matching product in local currency, filters results","required":false,"schema":{"type":"integer"}}],"responses":{"200":{"description":"Products found","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ProductResponse"}}}},"503":{"description":"one or more services are unavailable"}},"deprecated":false}}},"components":{"schemas":{"Product":{"type":"object","properties":{"attributes":{"type":"array","items":{"type":"string"}},"name":{"type":"string"},"price":{"type":"string"},"url":{"type":"string"}},"title":"Product"},"ProductResponse":{"type":"object","properties":{"products":{"type":"array","items":{"$ref":"#/components/schemas/Product"}}},"title":"ProductResponse"}}}}
Now that I know there is a Klarna Shopping API, I can use it to search for t-shirts. I will make a GET request to the API with the query parameter "t-shirt".
Action:
```

{
"action": "requests_get",
"action_input": "https://www.klarna.com/us/shopping/public/openai/v0/products?q=t-shirt"
}

```


{"products":[{"name":"Psycho Bunny Mens Copa Gradient Logo Graphic Tee","url":"https://www.klarna.com/us/shopping/pl/cl10001/3203663222/Clothing/Psycho-Bunny-Mens-Copa-Gradient-Logo-Graphic-Tee/?source=openai","price":"$35.00","attributes":["Material:Cotton","Target Group:Man","Color:White,Blue,Black,Orange"]},{"name":"T-shirt","url":"https://www.klarna.com/us/shopping/pl/cl10001/3203506327/Clothing/T-shirt/?source=openai","price":"$20.45","attributes":["Material:Cotton","Target Group:Man","Color:Gray,White,Blue,Black,Orange"]},{"name":"Palm Angels Bear T-shirt - Black","url":"https://www.klarna.com/us/shopping/pl/cl10001/3201090513/Clothing/Palm-Angels-Bear-T-shirt-Black/?source=openai","price":"$168.36","attributes":["Material:Cotton","Target Group:Man","Color:Black"]},{"name":"Tommy Hilfiger Essential Flag Logo T-shirt","url":"https://www.klarna.com/us/shopping/pl/cl10001/3201840629/Clothing/Tommy-Hilfiger-Essential-Flag-Logo-T-shirt/?source=openai","price":"$22.52","attributes":["Material:Cotton","Target Group:Man","Color:Red,Gray,White,Blue,Black","Pattern:Solid Color","Environmental Attributes :Organic"]},{"name":"Coach Outlet Signature T Shirt","url":"https://www.klarna.com/us/shopping/pl/cl10001/3203005573/Clothing/Coach-Outlet-Signature-T-Shirt/?source=openai","price":"$75.00","attributes":["Material:Cotton","Target Group:Man","Color:Gray"]}]}
Finished chain.
{
  result: {
    output: 'The available t-shirts in Klarna are Psycho Bunny Mens Copa Gradient Logo Graphic Tee, T-shirt, Palm Angels Bear T-shirt - Black, Tommy Hilfiger Essential Flag Logo T-shirt, and Coach Outlet Signature T Shirt.',
    intermediateSteps: [ [Object], [Object] ]
  }
}