Install Page Systems in a LangChain or LangGraph agent

export PAGE_SYSTEMS_API_KEY=ap_live_...

pip install langchain langchain-mcp-adapters langgraph

import os
import urllib.request

from langchain.agents import create_agent
from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.checkpoint.memory import InMemorySaver

skill = urllib.request.urlopen("https://pagesystems.ai/v1/skill").read().decode()  # once, at startup

client = MultiServerMCPClient({
    "page-systems": {
        "transport": "http",
        "url": "https://pagesystems.ai/mcp",
        "headers": {"Authorization": f"Bearer {os.environ['PAGE_SYSTEMS_API_KEY']}"},
    }
})
agent = create_agent(
    model,
    await client.get_tools(),
    system_prompt=your_instructions + "\n\n" + skill,
    checkpointer=InMemorySaver(),
)
result = await agent.ainvoke({"messages": [{"role": "user", "content": user_message}]}, {"configurable": {"thread_id": conversation_id}})

npm install langchain @langchain/mcp-adapters @langchain/langgraph

import { createAgent } from 'langchain';
import { MultiServerMCPClient } from '@langchain/mcp-adapters';
import { MemorySaver } from '@langchain/langgraph';

const skill = await fetch('https://pagesystems.ai/v1/skill').then((r) => r.text()); // once, at startup
const client = new MultiServerMCPClient({
  mcpServers: {
    'page-systems': {
      transport: 'http',
      url: 'https://pagesystems.ai/mcp',
      headers: { Authorization: `Bearer ${process.env.PAGE_SYSTEMS_API_KEY}` },
    },
  },
});
const agent = createAgent({
  model,
  tools: await client.getTools(),
  systemPrompt: [yourInstructions, skill].join('\n\n'),
  checkpointer: new MemorySaver(),
});
const result = await agent.invoke({ messages: [{ role: 'user', content: userMessage }] }, { configurable: { thread_id: conversationId } });