Apify actor 集成

pip install langchain-apify

import os

os.environ["APIFY_TOKEN"] = "your-apify-token"
os.environ["OPENAI_API_KEY"] = "your-openai-api-key"

from langchain_apify import ApifyActorsTool

tool = ApifyActorsTool("apify/rag-web-browser")

tool.invoke({"run_input": {"query": "what is apify?", "maxResults": 2}})

pip install langgraph langchain-openai

from langchain.messages import ToolMessage
from langchain_openai import ChatOpenAI
from langchain.agents import create_agent


model = ChatOpenAI(model="gpt-5-mini")
tools = [tool]
graph = create_agent(model, tools=tools)

inputs = {"messages": [("user", "search for what is Apify")]}
for s in graph.stream(inputs, stream_mode="values"):
    message = s["messages"][-1]
    # skip tool messages
    if isinstance(message, ToolMessage):
        continue
    message.pretty_print()

================================ Human Message =================================

search for what is Apify
================================== Ai Message ==================================
Tool Calls:
  apify_actor_apify_rag-web-browser (call_27mjHLzDzwa5ZaHWCMH510lm)
 Call ID: call_27mjHLzDzwa5ZaHWCMH510lm
  Args:
    run_input: {"run_input":{"query":"Apify","maxResults":3,"outputFormats":["markdown"]}}
================================== Ai Message ==================================

Apify is a comprehensive platform for web scraping, browser automation, and data extraction. It offers a wide array of tools and services that cater to developers and businesses looking to extract data from websites efficiently and effectively. Here's an overview of Apify:

1. **Ecosystem and Tools**:
   - Apify provides an ecosystem where developers can build, deploy, and publish data extraction and web automation tools called Actors.
   - The platform supports various use cases such as extracting data from social media platforms, conducting automated browser-based tasks, and more.

2. **Offerings**:
   - Apify offers over 10,000 ready-made scraping tools and code templates.
   - Users can also build custom solutions or hire Apify's professional services for more tailored data extraction needs.

3. **Technology and Integration**:
   - The platform supports integration with popular tools and services like Zapier, GitHub, Google Sheets, Pinecone, and more.
   - Apify supports open-source tools and technologies such as JavaScript, Python, Puppeteer, Playwright, Selenium, and its own Crawlee library for web crawling and browser automation.

4. **Community and Learning**:
   - Apify hosts a community on Discord where developers can get help and share expertise.
   - It offers educational resources through the Web Scraping Academy to help users become proficient in data scraping and automation.

5. **Enterprise Solutions**:
   - Apify provides enterprise-grade web data extraction solutions with high reliability, 99.95% uptime, and compliance with SOC2, GDPR, and CCPA standards.

For more information, you can visit [Apify's official website](https://apify.com/) or their [GitHub page](https://github.com/apify) which contains their code repositories and further details about their projects.

from langchain_apify import ApifyActorsTool

instagram_tool = ApifyActorsTool("apify/instagram-scraper")

# Scrape Instagram posts
result = instagram_tool.invoke({
    "run_input": {
        "directUrls": ["https://www.instagram.com/humansofny/"],
        "resultsLimit": 10
    }
})

google_search_tool = ApifyActorsTool("apify/google-search-scraper")

# Scrape Google Search results
result = google_search_tool.invoke({
    "run_input": {
        "queries": "langchain python tutorial",
        "maxPagesPerQuery": 1
    }
})

import os
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent

client = MultiServerMCPClient({
    "apify": {
        "transport": "http",
        "url": "https://mcp.apify.com",
        "headers": {
            "Authorization": f"Bearer {os.environ['APIFY_TOKEN']}",
        },
    }
})

tools = await client.get_tools()
agent = create_agent("gpt-5-mini", tools)