How do I find my LianLian Merchant ID?

Your Merchant ID is an 18-digit number starting with '14', provided by LianLian Pay after your account is successfully registered and verified. You can find it in the LianLian Global portal dashboard.

How do I set up the RSA keys for API calls?

Generate a 2048-bit RSA key pair. Upload your Public Key to the LianLian Global portal under [Developer Settings]. Use your Private Key in the credentials section of this server to sign requests.

Can I initiate a refund through the agent?

Yes. Use the `refund_order` tool with the original order ID and the refund amount. Your agent will initiate the request with LianLian Pay and monitor the processing status for you.

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

Name: LianLian Pay
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 LianLian Pay 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({
        "lianlian-pay": {
            "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 LianLian Pay, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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* 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 LianLian Pay MCP Server

Empower your AI agent to orchestrate your international financial infrastructure with LianLian Pay, the premier cross-border payment platform for enterprise global trade. By connecting LianLian Pay to your agent, you transform complex settlement tracking, fund collections, and multi-currency management into a natural conversation. Your agent can instantly list your balances, retrieve transaction details, monitor fund settlements, and even initiate refund requests without you ever needing to navigate the comprehensive LianLian Global portal. Whether you are managing cross-border e-commerce revenue or coordinating international supplier payments, your agent acts as a real-time global treasury assistant, keeping your data accurate and your settlements moving.

LangChain's ecosystem of 500+ components combines seamlessly with LianLian Pay 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

Balance Orchestration — Retrieve real-time balance information across your LianLian merchant accounts.
Payment Management — Create and track payment orders with full support for unique identifiers and status queries.
Settlement Monitoring — Browse historical settlements and fund withdrawals to track your capital flow.
Transaction Auditing — Filter and retrieve detailed transaction records for financial reconciliation.
Treasury Insights — Retrieve current FX exchange rates and supported bank lists for efficient fund management.

The LianLian Pay 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 LianLian Pay to LangChain via MCP

Follow these steps to integrate the LianLian Pay 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 LianLian Pay via MCP

Why Use LangChain with the LianLian Pay MCP Server

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

The largest ecosystem of integrations, chains, and agents — combine LianLian Pay 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 LianLian Pay queries for multi-turn workflows

LianLian Pay + LangChain Use Cases

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

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

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

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

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

LianLian Pay MCP Tools for LangChain (10)

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

create_payment

Create a new payment

get_account_info

Get merchant account info

get_balance

Get account balance

get_bank_list

Get supported banks

get_exchange_rates

Get current FX rates

list_settlements

List settlements

list_transactions

List transactions

list_withdrawals

List fund withdrawals

query_order

Query order status

refund_order

Refund a payment

Example Prompts for LianLian Pay in LangChain

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

"What is my current balance on LianLian Pay?"

"Check the status of order 'LL-ORDER-8821'."

"List the last 5 settlements for my merchant account."

Troubleshooting LianLian Pay MCP Server with LangChain

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

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

LianLian Pay + LangChain FAQ

Common questions about integrating LianLian Pay 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.