How do I find my WeChat AppID and Secret?

Log in to the [WeChat Official Accounts Platform](https://mp.weixin.qq.com/), navigate to [Settings] -> [Development] -> [Basic Configuration] to find your unique AppID and generate your AppSecret.

How can I retrieve a user's phone number?

First, use the `getPhoneNumber` capability in your mini-program frontend to obtain a code. Then, pass that code to the `get_phone_number` tool in this server to retrieve the verified mobile number.

What is the difference between standard and unlimited QR codes?

Standard QR codes (up to 100,000) are mapped to a specific path. Unlimited QR codes (scene-based) use a scene string to pass parameters and have no creation limit, making them ideal for large-scale marketing.

WeChat Mini-Programs / 微信小程序 MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: WeChat Mini-Programs / 微信小程序
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 WeChat Mini-Programs / 微信小程序 through the 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({
        "wechat-mini-programs": {
            "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 WeChat Mini-Programs / 微信小程序, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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About WeChat Mini-Programs / 微信小程序 MCP Server

Empower your AI agent to orchestrate your mini-app operations and subscriber engagement with WeChat Mini-Programs (微信小程序), the dominant application platform in China. By connecting WeChat to your agent, you transform complex session management, phone number retrieval, and subscriber messaging into a natural conversation. Your agent can instantly exchange login codes for sessions, retrieve verified user phone numbers, generate unlimited scene QR codes, and audit content security without you ever needing to navigate the comprehensive WeChat MP portal. Whether you are automating user onboarding or coordinating a targeted notification blast, your agent acts as a real-time mini-app operations assistant, providing accurate and reliable results from a single, unified source.

LangChain's ecosystem of 500+ components combines seamlessly with WeChat Mini-Programs / 微信小程序 through native MCP adapters. Connect 10 tools via the 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

Session Orchestration — Exchange login codes for user OpenIDs, UnionIDs, and session keys for seamless authentication.
User Data Insights — Retrieve verified user phone numbers and audit subscriber profiles through secure API calls.
Messaging Control — Send structured subscribe messages and manage delivery status for your mini-program users.
QR Code Management — Generate unlimited scene-based QR codes and standard path codes for user acquisition.
Security Auditing — Perform real-time content security checks on text and images to ensure platform compliance.

The WeChat Mini-Programs / 微信小程序 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 WeChat Mini-Programs / 微信小程序 to LangChain via MCP

Follow these steps to integrate the WeChat Mini-Programs / 微信小程序 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 WeChat Mini-Programs / 微信小程序 via MCP

Why Use LangChain with the WeChat Mini-Programs / 微信小程序 MCP Server

LangChain provides unique advantages when paired with WeChat Mini-Programs / 微信小程序 through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents — combine WeChat Mini-Programs / 微信小程序 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 WeChat Mini-Programs / 微信小程序 queries for multi-turn workflows

WeChat Mini-Programs / 微信小程序 + LangChain Use Cases

Practical scenarios where LangChain combined with the WeChat Mini-Programs / 微信小程序 MCP Server delivers measurable value.

RAG with live data: combine WeChat Mini-Programs / 微信小程序 tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query WeChat Mini-Programs / 微信小程序, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain WeChat Mini-Programs / 微信小程序 tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every WeChat Mini-Programs / 微信小程序 tool call, measure latency, and optimize your agent's performance

WeChat Mini-Programs / 微信小程序 MCP Tools for LangChain (10)

These 10 tools become available when you connect WeChat Mini-Programs / 微信小程序 to LangChain via MCP:

code_to_session

generate_standard_qrcode

Generate standard QR code

generate_unlimited_qrcode

Generate unlimited QR code

get_account_status

Check account connectivity

get_daily_summary

Get daily summary trend

get_phone_number

Get user phone number

get_visit_page_trend

Get visit page trend

image_security_check

Check image for sensitive content

message_security_check

Check text for sensitive content

send_subscribe_message

Send subscribe message

Example Prompts for WeChat Mini-Programs / 微信小程序 in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with WeChat Mini-Programs / 微信小程序 immediately.

"Exchange login code '0138...' for a user session."

"Send a subscribe message to 'o992018...' with template ID 'TEMP_8821'."

"Generate an unlimited QR code for scene 'referral_8821' on page 'pages/index/index'."

Troubleshooting WeChat Mini-Programs / 微信小程序 MCP Server with LangChain

Common issues when connecting WeChat Mini-Programs / 微信小程序 to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

WeChat Mini-Programs / 微信小程序 + LangChain FAQ

Common questions about integrating WeChat Mini-Programs / 微信小程序 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.