chatgpt-api/examples/langchain/weather.ts

39 wiersze
1.0 KiB
JavaScript

#!/usr/bin/env node
import 'dotenv/config'
import { WeatherClient } from '@agentic/stdlib'
import { createLangChainTools } from '@agentic/stdlib/langchain'
import { ChatPromptTemplate } from '@langchain/core/prompts'
import { ChatOpenAI } from '@langchain/openai'
import { AgentExecutor, createToolCallingAgent } from 'langchain/agents'
async function main() {
const weather = new WeatherClient()
const tools = createLangChainTools(weather)
const agent = createToolCallingAgent({
llm: new ChatOpenAI({ model: 'gpt-4o', temperature: 0 }),
tools,
prompt: ChatPromptTemplate.fromMessages([
['system', 'You are a helpful assistant. Be as concise as possible.'],
['placeholder', '{chat_history}'],
['human', '{input}'],
['placeholder', '{agent_scratchpad}']
])
})
const agentExecutor = new AgentExecutor({
agent,
tools
// verbose: true
})
const result = await agentExecutor.invoke({
input: 'What is the weather in San Francisco?'
})
console.log(result.output)
}
await main()