# How to integrate Plisio MCP with LangChain

```json
{
  "title": "How to integrate Plisio MCP with LangChain",
  "toolkit": "Plisio",
  "toolkit_slug": "plisio",
  "framework": "LangChain",
  "framework_slug": "langchain",
  "url": "https://composio.dev/toolkits/plisio/framework/langchain",
  "markdown_url": "https://composio.dev/toolkits/plisio/framework/langchain.md",
  "updated_at": "2026-05-12T10:22:20.143Z"
}
```

## Introduction

This guide walks you through connecting Plisio to LangChain using the Composio tool router. By the end, you'll have a working Plisio agent that can show your current bitcoin and ethereum balances, list all paid cryptocurrency invoices from last week, get recent withdrawal transactions for litecoin through natural language commands.
This guide will help you understand how to give your LangChain agent real control over a Plisio account through Composio's Plisio MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Plisio with

- [OpenAI Agents SDK](https://composio.dev/toolkits/plisio/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/plisio/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/plisio/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/plisio/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/plisio/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/plisio/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/plisio/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/plisio/framework/cli)
- [Google ADK](https://composio.dev/toolkits/plisio/framework/google-adk)
- [Vercel AI SDK](https://composio.dev/toolkits/plisio/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/plisio/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/plisio/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/plisio/framework/crew-ai)

## TL;DR

Here's what you'll learn:
- Get and set up your OpenAI and Composio API keys
- Connect your Plisio project to Composio
- Create a Tool Router MCP session for Plisio
- Initialize an MCP client and retrieve Plisio tools
- Build a LangChain agent that can interact with Plisio
- Set up an interactive chat interface for testing

## What is LangChain?

LangChain is a framework for developing applications powered by language models. It provides tools and abstractions for building agents that can reason, use tools, and maintain conversation context.
Key features include:
- Agent Framework: Build agents that can use tools and make decisions
- MCP Integration: Connect to external services through Model Context Protocol adapters
- Memory Management: Maintain conversation history across interactions
- Multi-Provider Support: Works with OpenAI, Anthropic, and other LLM providers

## What is the Plisio MCP server, and what's possible with it?

The Plisio MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Plisio account. It provides structured and secure access to your cryptocurrency payment gateway, so your agent can perform actions like checking balances, monitoring transactions, fetching withdrawal statuses, and analyzing fee plans on your behalf.
- Real-time account and crypto balance monitoring: Instantly retrieve your overall account balances or check balances for specific cryptocurrencies to stay on top of your assets.
- Transaction and invoice history retrieval: Have your agent fetch a detailed list of all Plisio transactions and invoices, filterable by status or type, for complete payment tracking.
- Operations and activity tracking: Let your agent automatically pull records of deposits and withdrawals, apply filters, and paginate through large datasets for easy financial oversight.
- Withdrawal status and history management: Effortlessly get up-to-date information on all withdrawal operations and review their statuses to simplify reconciliation and auditing.
- Fee plan analysis: Ask your agent to fetch and compare current fee plans for supported cryptocurrencies, helping you optimize your transaction costs.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `PLISIO_CREATE_INVOICE` | Create Plisio Invoice | Tool to create a new cryptocurrency payment invoice with Plisio. Returns transaction ID and invoice URL for payment. For white-label accounts, includes additional fields like wallet hash, QR code, and commission details. Use when you need to generate a payment request for cryptocurrency transactions. |
| `PLISIO_ESTIMATE_FEE` | Estimate Fee | Tool to estimate network fee for a withdrawal transaction to specific address(es). Use when calculating transaction costs before creating a withdrawal. |
| `PLISIO_GET_BALANCE_BY_CURRENCY` | Get Balance By Currency | Tool to get the balance for a specific cryptocurrency in your Plisio account. Use when you need to retrieve the balance of a particular crypto asset. |
| `PLISIO_GET_COMMISSION` | Get Commission | Tool to estimate the total cost including network fee and Plisio commission for a transaction. Returns detailed breakdown of commission, fee, and fee plan options for the specified cryptocurrency and amounts. |
| `PLISIO_GET_CURRENCY_RATE` | Get Currency Rate | Tool to retrieve list of supported cryptocurrencies with current rates filtered by fiat currency. Use when you need exchange rate information for cryptocurrencies in a specific fiat currency. |
| `PLISIO_GET_FEE_PLANS` | Get Fee Plans | Tool to retrieve available fee plans for a given cryptocurrency. Specify a currency symbol like 'BTC', 'ETH' to get fee plan details. |
| `PLISIO_GET_FEE_PLANS` | Get Fee Plans | Tool to get available fee plans for a specific cryptocurrency. Returns fee values and configuration like gas limits for Ethereum-based coins or confirmation targets for Bitcoin. Use when you need to determine transaction fee options before creating or sending a transaction. |
| `PLISIO_GET_INVOICE` | Get Invoice | Tool to retrieve detailed information about a specific invoice by its ID. Use when you need to check invoice status, payment details, or transaction information. |
| `PLISIO_GET_INVOICE_EMAIL` | Get Invoice by Email | Tool to retrieve invoice details by email ID. Use when you need to fetch detailed information about a specific invoice using the invoice ID and payer's email address. |
| `PLISIO_GET_SHOP` | Get Shop Information | Tool to retrieve shop information by API key. Returns details about the shop associated with the current API credentials. |
| `PLISIO_GET_TRANSACTIONS` | Get Plisio Transactions | Tool to retrieve a list of transactions and invoices. Use after authenticating with your API key to fetch historical operations with optional filters and pagination. Example: GetTransactions(status='paid', limit=20). |
| `PLISIO_LIST_CURRENCIES` | List Supported Currencies | Tool to retrieve a list of supported cryptocurrencies with their rates and information. Use after API credentials are configured to get current exchange rates, commission percentages, and operational status for all available coins. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Plisio MCP server is an implementation of the Model Context Protocol that connects your AI agent to Plisio. It provides structured and secure access so your agent can perform Plisio operations on your behalf through a secure, permission-based interface.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

No description provided.

### 1. Getting API Keys for OpenAI and Composio

OpenAI API Key
- Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. You'll need credits to use the models, or you can connect to another model provider.
- Keep the API key safe.
Composio API Key
- Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Navigate to your API settings and generate a new API key.
- Store this key securely as you'll need it for authentication.

### 2. Install dependencies

No description provided.
```python
pip install composio-langchain langchain-mcp-adapters langchain python-dotenv
```

```typescript
npm install @composio/langchain @langchain/core @langchain/openai @langchain/mcp-adapters dotenv
```

### 3. Set up environment variables

Create a .env file in your project root.
What's happening:
- COMPOSIO_API_KEY authenticates your requests to Composio's API
- COMPOSIO_USER_ID identifies the user for session management
- OPENAI_API_KEY enables access to OpenAI's language models
```bash
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_composio_user_id_here
OPENAI_API_KEY=your_openai_api_key_here
```

### 4. Import dependencies

No description provided.
```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()
```

```typescript
import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

dotenv.config();
```

### 5. Initialize Composio client

What's happening:
- We're loading the COMPOSIO_API_KEY from environment variables and validating it exists
- Creating a Composio instance that will manage our connection to Plisio tools
- Validating that COMPOSIO_USER_ID is also set before proceeding
```python
async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))

    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")
```

```typescript
const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.COMPOSIO_USER_ID;

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });
```

### 6. Create a Tool Router session

What's happening:
- We're creating a Tool Router session that gives your agent access to Plisio tools
- The create method takes the user ID and specifies which toolkits should be available
- The returned session.mcp.url is the MCP server URL that your agent will use
- This approach allows the agent to dynamically load and use Plisio tools as needed
```python
# Create Tool Router session for Plisio
session = composio.create(
    user_id=os.getenv("COMPOSIO_USER_ID"),
    toolkits=['plisio']
)

url = session.mcp.url
```

```typescript
const session = await composio.create(
    userId as string,
    {
        toolkits: ['plisio']
    }
);

const url = session.mcp.url;
```

### 7. Configure the agent with the MCP URL

No description provided.
```python
client = MultiServerMCPClient({
    "plisio-agent": {
        "transport": "streamable_http",
        "url": session.mcp.url,
        "headers": {
            "x-api-key": os.getenv("COMPOSIO_API_KEY")
        }
    }
})

tools = await client.get_tools()

agent = create_agent("gpt-5", tools)
```

```typescript
const client = new MultiServerMCPClient({
    "plisio-agent": {
        transport: "http",
        url: url,
        headers: {
            "x-api-key": process.env.COMPOSIO_API_KEY
        }
    }
});

const tools = await client.getTools();

const agent = createAgent({ model: "gpt-5", tools });
```

### 8. Set up interactive chat interface

No description provided.
```python
conversation_history = []

print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Plisio related question or task to the agent.\n")

while True:
    user_input = input("You: ").strip()

    if user_input.lower() in ['exit', 'quit', 'bye']:
        print("\nGoodbye!")
        break

    if not user_input:
        continue

    conversation_history.append({"role": "user", "content": user_input})
    print("\nAgent is thinking...\n")

    response = await agent.ainvoke({"messages": conversation_history})
    conversation_history = response['messages']
    final_response = response['messages'][-1].content
    print(f"Agent: {final_response}\n")
```

```typescript
let conversationHistory: any[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
console.log("Ask any Plisio related question or task to the agent.\n");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: '
});

rl.prompt();

rl.on('line', async (userInput: string) => {
    const trimmedInput = userInput.trim();

    if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
        console.log("\nGoodbye!");
        rl.close();
        process.exit(0);
    }

    if (!trimmedInput) {
        rl.prompt();
        return;
    }

    conversationHistory.push({ role: "user", content: trimmedInput });
    console.log("\nAgent is thinking...\n");

    const response = await agent.invoke({ messages: conversationHistory });
    conversationHistory = response.messages;

    const finalResponse = response.messages[response.messages.length - 1]?.content;
    console.log(`Agent: ${finalResponse}\n`);
        
        rl.prompt();
    });

    rl.on('close', () => {
        console.log('\n👋 Session ended.');
        process.exit(0);
    });
```

### 9. Run the application

No description provided.
```python
if __name__ == "__main__":
    asyncio.run(main())
```

```typescript
main().catch((err) => {
    console.error('Fatal error:', err);
    process.exit(1);
});
```

## Complete Code

```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()

async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    
    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")
    
    session = composio.create(
        user_id=os.getenv("COMPOSIO_USER_ID"),
        toolkits=['plisio']
    )

    url = session.mcp.url
    
    client = MultiServerMCPClient({
        "plisio-agent": {
            "transport": "streamable_http",
            "url": url,
            "headers": {
                "x-api-key": os.getenv("COMPOSIO_API_KEY")
            }
        }
    })
    
    tools = await client.get_tools()
  
    agent = create_agent("gpt-5", tools)
    
    conversation_history = []
    
    print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
    print("Ask any Plisio related question or task to the agent.\n")
    
    while True:
        user_input = input("You: ").strip()
        
        if user_input.lower() in ['exit', 'quit', 'bye']:
            print("\nGoodbye!")
            break
        
        if not user_input:
            continue
        
        conversation_history.append({"role": "user", "content": user_input})
        print("\nAgent is thinking...\n")
        
        response = await agent.ainvoke({"messages": conversation_history})
        conversation_history = response['messages']
        final_response = response['messages'][-1].content
        print(f"Agent: {final_response}\n")

if __name__ == "__main__":
    asyncio.run(main())
```

```typescript
import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";  
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.COMPOSIO_USER_ID;

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });

    const session = await composio.create(
        userId as string,
        {
            toolkits: ['plisio']
        }
    );

    const url = session.mcp.url;
    
    const client = new MultiServerMCPClient({
        "plisio-agent": {
            transport: "http",
            url: url,
            headers: {
                "x-api-key": process.env.COMPOSIO_API_KEY
            }
        }
    });
    
    const tools = await client.getTools();
  
    const agent = createAgent({ model: "gpt-5", tools });
    
    let conversationHistory: any[] = [];
    
    console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
    console.log("Ask any Plisio related question or task to the agent.\n");
    
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
        prompt: 'You: '
    });

    rl.prompt();

    rl.on('line', async (userInput: string) => {
        const trimmedInput = userInput.trim();
        
        if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
            console.log("\nGoodbye!");
            rl.close();
            process.exit(0);
        }
        
        if (!trimmedInput) {
            rl.prompt();
            return;
        }
        
        conversationHistory.push({ role: "user", content: trimmedInput });
        console.log("\nAgent is thinking...\n");
        
        const response = await agent.invoke({ messages: conversationHistory });
        conversationHistory = response.messages;
        
        const finalResponse = response.messages[response.messages.length - 1]?.content;
        console.log(`Agent: ${finalResponse}\n`);
        
        rl.prompt();
    });

    rl.on('close', () => {
        console.log('\nSession ended.');
        process.exit(0);
    });
}

main().catch((err) => {
    console.error('Fatal error:', err);
    process.exit(1);
});
```

## Conclusion

You've successfully built a LangChain agent that can interact with Plisio through Composio's Tool Router.
Key features of this implementation:
- Dynamic tool loading through Composio's Tool Router
- Conversation history maintenance for context-aware responses
- Async Python provides clean, efficient execution of agent workflows
You can extend this further by adding error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.

## How to build Plisio MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/plisio/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/plisio/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/plisio/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/plisio/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/plisio/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/plisio/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/plisio/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/plisio/framework/cli)
- [Google ADK](https://composio.dev/toolkits/plisio/framework/google-adk)
- [Vercel AI SDK](https://composio.dev/toolkits/plisio/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/plisio/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/plisio/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/plisio/framework/crew-ai)

## Related Toolkits

- [Stripe](https://composio.dev/toolkits/stripe) - Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide.
- [Alpha vantage](https://composio.dev/toolkits/alpha_vantage) - Alpha Vantage is a financial data platform offering real-time and historical stock market APIs. Get instant, reliable access to equities, forex, and technical analysis data for smarter trading decisions.
- [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management.
- [Benzinga](https://composio.dev/toolkits/benzinga) - Benzinga provides real-time financial news and data APIs for market coverage. It helps you track breaking news and actionable market insights instantly.
- [Brex](https://composio.dev/toolkits/brex) - Brex provides corporate credit cards and spend management tailored for startups and tech businesses. It helps optimize company cash flow, streamline accounting, and accelerate business growth.
- [Chaser](https://composio.dev/toolkits/chaser) - Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow.
- [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time.
- [Coinbase](https://composio.dev/toolkits/coinbase) - Coinbase is a platform for buying, selling, and storing cryptocurrency. It makes exchanging and managing crypto simple and secure for everyone.
- [Coinranking](https://composio.dev/toolkits/coinranking) - Coinranking is a comprehensive cryptocurrency market data platform offering access to real-time coin prices, market caps, and historical data. Get accurate, up-to-date stats for thousands of digital assets in one place.
- [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations.
- [CurrencyScoop](https://composio.dev/toolkits/currencyscoop) - CurrencyScoop is a developer-friendly API for real-time and historical currency exchange rates. Easily access fiat and crypto data for smart, up-to-date financial applications.
- [Daffy](https://composio.dev/toolkits/daffy) - Daffy is a modern charitable giving platform with a donor-advised fund. Easily set aside funds, grow them tax-free, and donate to over 1.7 million U.S. charities.
- [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation.
- [Elorus](https://composio.dev/toolkits/elorus) - Elorus is an online invoicing and time-tracking software for freelancers and small businesses. Easily manage finances, bill clients, and track work in one place.
- [Eodhd apis](https://composio.dev/toolkits/eodhd_apis) - Eodhd apis delivers comprehensive financial data, including live and historical stock prices, via robust APIs. Easily access reliable, up-to-date market insights to power your apps, dashboards, and analytics.
- [Fidel api](https://composio.dev/toolkits/fidel_api) - Fidel api is a secure platform for linking payment cards to web and mobile apps. It enables real-time card transaction monitoring and event-based automation for businesses.
- [Finage](https://composio.dev/toolkits/finage) - Finage is a secure API platform delivering real-time and historical financial data for stocks, forex, crypto, indices, and commodities. It empowers developers and businesses to access, analyze, and act on market data instantly.
- [Finmei](https://composio.dev/toolkits/finmei) - Finmei is an invoicing tool that simplifies billing, invoice management, and expense tracking. Ideal for automating and organizing your business finances in one place.
- [Fixer](https://composio.dev/toolkits/fixer) - Fixer is a currency data API offering real-time and historical exchange rates for 170 currencies. Instantly access accurate, up-to-date forex data for your applications and workflows.
- [Fixer io](https://composio.dev/toolkits/fixer_io) - Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Plisio MCP?

With a standalone Plisio MCP server, the agents and LLMs can only access a fixed set of Plisio tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Plisio and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with LangChain?

Yes, you can. LangChain fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Plisio tools.

### Can I manage the permissions and scopes for Plisio while using Tool Router?

Yes, absolutely. You can configure which Plisio scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Plisio data and credentials are handled as safely as possible.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)