How do I find my LeanCloud App ID and Key?

Log in to your LeanCloud console, select your application, and go to [Settings] → [App Keys]. You will find your App ID, App Key, and Master Key there.

When do I need to use the Master Key?

The Master Key is required for administrative operations that bypass ACLs, such as listing all users, sending push notifications, or retrieving sensitive system metrics. It should be kept strictly confidential.

Can I query custom data classes?

Yes! Use the `list_objects` tool and provide the exact name of your data class. Your agent will retrieve the records according to your application's permissions.

LeanCloud MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: LeanCloud
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 10 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect LeanCloud through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "leancloud": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using LeanCloud, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About LeanCloud MCP Server

Empower your AI agent to orchestrate your entire backend infrastructure with LeanCloud, the premier backend-as-a-service platform for modern developers. By connecting LeanCloud to your agent, you transform complex data modeling, user management, and notification delivery into a natural conversation. Your agent can instantly list data objects, retrieve detailed record metadata, manage user profiles, and even initiate push notifications without you ever needing to navigate the comprehensive LeanCloud console. Whether you are conducting a data audit or monitoring application usage, your agent acts as a real-time backend assistant, keeping your data accurate and your services responsive.

LangChain's ecosystem of 500+ components combines seamlessly with LeanCloud through native MCP adapters. Connect 10 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

Data Orchestration — List and retrieve detailed information about objects in any of your LeanCloud data classes.
User Management — Browse and retrieve user profiles to audit your application's membership base.
Content Control — Create, update, and delete data objects programmatically through the agent interface.
File Auditing — Browse and list files uploaded to your application's cloud storage.
Push Notifications — Initiate and monitor push notification deliveries to engage your users instantly.

The LeanCloud MCP Server exposes 10 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect LeanCloud to LangChain via MCP

Follow these steps to integrate the LeanCloud MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 10 tools from LeanCloud via MCP

Why Use LangChain with the LeanCloud MCP Server

LangChain provides unique advantages when paired with LeanCloud through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine LeanCloud MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across LeanCloud queries for multi-turn workflows

LeanCloud + LangChain Use Cases

Practical scenarios where LangChain combined with the LeanCloud MCP Server delivers measurable value.

RAG with live data: combine LeanCloud tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query LeanCloud, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain LeanCloud tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every LeanCloud tool call, measure latency, and optimize your agent's performance

LeanCloud MCP Tools for LangChain (10)

These 10 tools become available when you connect LeanCloud to LangChain via MCP:

create_object

Create a new object

delete_object

Delete an object

get_app_stats

Get application statistics

get_object

Get object details

get_user

Get user details

list_files

List application files

list_objects

List objects in a class

list_users

List application users

push_notification

Send push notification

update_object

Update an object

Example Prompts for LeanCloud in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with LeanCloud immediately.

"List the last 5 objects in the 'GameScore' class."

"Show me all users in the application."

"Check the application statistics for today."

Troubleshooting LeanCloud MCP Server with LangChain

Common issues when connecting LeanCloud to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

LeanCloud + LangChain FAQ

Common questions about integrating LeanCloud MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.