# How to integrate Erpnext MCP with LangChain

```json
{
  "title": "How to integrate Erpnext MCP with LangChain",
  "toolkit": "Erpnext",
  "toolkit_slug": "erpnext",
  "framework": "LangChain",
  "framework_slug": "langchain",
  "url": "https://composio.dev/toolkits/erpnext/framework/langchain",
  "markdown_url": "https://composio.dev/toolkits/erpnext/framework/langchain.md",
  "updated_at": "2026-03-29T06:32:37.220Z"
}
```

## Introduction

This guide walks you through connecting Erpnext to LangChain using the Composio tool router. By the end, you'll have a working Erpnext agent that can list overdue tasks for all projects, create a new customer record, get all open purchase orders through natural language commands.
This guide will help you understand how to give your LangChain agent real control over a Erpnext account through Composio's Erpnext MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Erpnext with

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

## TL;DR

Here's what you'll learn:
- Get and set up your OpenAI and Composio API keys
- Connect your Erpnext project to Composio
- Create a Tool Router MCP session for Erpnext
- Initialize an MCP client and retrieve Erpnext tools
- Build a LangChain agent that can interact with Erpnext
- 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 Erpnext MCP server, and what's possible with it?

The Erpnext MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Erpnext account. It provides structured and secure access so your agent can perform Erpnext operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `ERPNEXT_ADD_COMMENT` | Add Comment | Tool to add a comment to a document in ERPNext/Frappe. Use when you need to add comments or notes to any document type like ToDo, Issue, Task, or custom DocTypes. |
| `ERPNEXT_ADD_TAG` | Add Tag | Tool to add a tag to a document in ERPNext. Use when you need to categorize or label documents for organization and filtering purposes. |
| `ERPNEXT_APPLY_WORKFLOW` | Apply Workflow | Tool to apply a workflow action to a document in ERPNext/Frappe. Use when you need to transition a document through workflow states (e.g., approve, reject, submit). The document must have a workflow configured for its doctype. |
| `ERPNEXT_CANCEL_DOCUMENT` | Cancel Document | Cancel a submitted document in ERPNext/Frappe to change its status from Submitted to Cancelled. Use for submittable DocTypes when you need to reverse or cancel a submitted transaction. Document must be in Submitted state (docstatus=1) before cancellation. |
| `ERPNEXT_CREATE_DOCUMENT` | Create Document | Tool to create a new document of a specific DocType in ERPNext. Use when you need to create records like ToDo, Customer, Lead, Sales Invoice, etc. The document data should include all required fields for the specific DocType. Standard fields like creation, modified, and owner are automatically set by ERPNext. |
| `ERPNEXT_CREATE_TIMESHEET` | Create Timesheet | Tool to create a new Timesheet record in ERPNext. Use when you need to log time entries for employees or projects. |
| `ERPNEXT_CREATE_WEBHOOK` | Create Webhook | Tool to create a new webhook configuration in ERPNext. Use when you need to set up automated callbacks for DocType events like creation, updates, or submissions. |
| `ERPNEXT_DELETE_DOCUMENT` | Delete Document | Tool to delete a document using the Frappe client API. Use when you need to remove a specific document by its doctype and name. |
| `ERPNEXT_DELETE_DOCUMENT` | Delete Document | Tool to delete a specific document by DocType and name. Use when you need to remove a document from ERPNext. Requires delete permissions for the specified DocType. |
| `ERPNEXT_DOWNLOAD_FILE_FROM_ERPNEXT` | Download file from ERPNext | Tool to download a file from ERPNext by its URL. Use when you need to retrieve file content from the ERPNext instance using the file's URL path. |
| `ERPNEXT_DOWNLOAD_PDF_DOCUMENT` | Download PDF Document | Tool to download a document as PDF from ERPNext with optional print format. Use when you need to retrieve a document in PDF format, optionally specifying a custom print format or excluding letterhead. |
| `ERPNEXT_GET_ALL_LANGUAGES` | Get All Languages | Tool to get a list of all available languages in the ERPNext/Frappe system. Use when you need to retrieve supported languages for translation or localization purposes. |
| `ERPNEXT_GET_ALL_ROLES` | Get All Roles | Tool to get a list of all roles available in the ERPNext system. Use when you need to retrieve all available roles for assignment or reference. |
| `ERPNEXT_GET_DOCUMENT` | Get Document | Tool to get a single document by DocType and name or filters from Frappe/ERPNext. Use when you need to retrieve a specific document's complete details. |
| `ERPNEXT_GET_DOCUMENT_COUNT` | Get Document Count | Tool to get the count of documents matching specified filters in ERPNext/Frappe. Use when you need to know how many records exist for a specific DocType, optionally filtered by conditions. |
| `ERPNEXT_GET_DOCTYPE_METADATA` | Get DocType Metadata | Tool to retrieve complete DocType metadata/schema including field definitions, field types, permissions, and configurations. Use when you need to understand the structure of a DocType, its fields, validation rules, or permissions before creating or querying documents. |
| `ERPNEXT_GET_DOCUMENT` | Get Document | Tool to retrieve a specific document by its DocType and name (ID). Returns the complete document with all fields. Use when you need to fetch details of a specific ERPNext document like Customer, Employee, Account, Sales Invoice, etc. |
| `ERPNEXT_GET_DOCUMENT_WITH_METADATA` | Get Document with Metadata | Tool to retrieve a document with full metadata including attachments, comments, activity logs, and related information. Use when you need complete document details beyond the basic fields returned by standard GET requests. |
| `ERPNEXT_GET_EXCHANGE_RATE` | Get Exchange Rate | Tool to get the currency exchange rate between two currencies in ERPNext. Use when you need to convert amounts between different currencies or check current exchange rates. |
| `ERPNEXT_GET_FISCAL_YEAR` | Get Fiscal Year | Tool to get fiscal year information for a given date in ERPNext. Use when you need to determine which fiscal year a specific date falls into or retrieve fiscal year boundaries. |
| `ERPNEXT_GET_FRAMEWORK_VERSION` | Get Framework Version | Tool to get the Frappe framework version and all installed app versions. Use when you need to check the ERPNext/Frappe system version for compatibility or debugging purposes. |
| `ERPNEXT_GET_ITEM_DETAILS` | Get Item Details | Tool to get detailed item information including pricing, taxes, and stock details from ERPNext. Use when you need comprehensive item data for transactions like Sales Orders, Purchase Orders, or Invoices. This action retrieves item-specific information based on the provided context including customer, price list, warehouse, and currency. |
| `ERPNEXT_GET_LIST_OF_DOCUMENTS` | Get List of Documents | Tool to retrieve a list of documents from ERPNext/Frappe with filtering, field selection, and pagination. Use when you need to query documents of a specific DocType with optional filters, sorting, and field selection. The response contains an array of document objects with the requested fields. |
| `ERPNEXT_GET_LOGGED_USER` | Get Logged User | Tool to get the email/ID of the currently authenticated user. Use to verify authentication is working. |
| `ERPNEXT_GET_PARTY_DETAILS` | Get Party Details | Tool to get comprehensive customer or supplier details including addresses, contacts, and default financial settings. Use when creating transactions or updating party information in ERPNext. |
| `ERPNEXT_GET_PAYMENT_ENTRY` | Get Payment Entry | Tool to get payment entry details for an invoice or order from ERPNext. Use when you need to retrieve payment information for a Sales Invoice, Purchase Invoice, Sales Order, or Purchase Order. This returns a Payment Entry document with party details, payment amounts, accounts, exchange rates, and reference information. |
| `ERPNEXT_GET_STOCK_BALANCE` | Get Stock Balance | Tool to retrieve the current stock balance for a specific item in a warehouse. Use when you need to check inventory levels or available quantity. |
| `ERPNEXT_GET_TIMEZONES` | Get Timezones | Tool to get a list of all available timezones in the ERPNext system. Use when you need to retrieve timezone options for user configuration or scheduling. |
| `ERPNEXT_GET_USER_ROLES` | Get User Roles | Tool to get roles assigned to a user. Use when you need to check user permissions or access levels in ERPNext/Frappe. |
| `ERPNEXT_GET_FIELD_VALUE` | Get Field Value | Tool to get specific field value(s) from a document in ERPNext. Use when you need to retrieve one or more field values without loading the entire document. |
| `ERPNEXT_GET_WORKFLOW_TRANSITIONS` | Get Workflow Transitions | Tool to get available workflow transitions for a document. Use when you need to check what workflow actions are available for a specific document based on its current state and user permissions. |
| `ERPNEXT_INSERT_DOCUMENT` | Insert Document | Tool to insert a new document in ERPNext/Frappe using the client API. Use when you need to create any type of document (ToDo, Customer, Item, etc.) by providing the doctype and required fields. |
| `ERPNEXT_INSERT_MULTIPLE_DOCUMENTS` | Insert Multiple Documents | Tool to insert multiple documents at once into ERPNext/Frappe. Use when you need to create multiple records (Notes, Customers, Items, etc.) in a single API call for better efficiency. |
| `ERPNEXT_LIST_DOCTYPES` | List DocTypes | Tool to get a list of all DocTypes available in the ERPNext system. Use when you need to retrieve available DocTypes with optional filtering and pagination. |
| `ERPNEXT_LIST_ERPNEXT_DOCUMENTS` | List ERPNext Documents | Tool to list documents of a specific DocType from ERPNext. Returns paginated results (default 20 items). Use when you need to retrieve multiple documents, with support for filtering, field selection, and pagination. |
| `ERPNEXT_LIST_EMPLOYEES` | List Employees | Tool to retrieve a list of Employee records from ERPNext. Use when you need to fetch employee information with optional filtering and pagination. |
| `ERPNEXT_LIST_PROJECTS` | List Projects | Tool to retrieve a list of Project records from ERPNext. Use when you need to get projects, optionally filtered and paginated. |
| `ERPNEXT_LIST_TIMESHEETS` | List Timesheets | Tool to get a list of Timesheet records from ERPNext. Use when you need to retrieve, search, or filter timesheets. Supports pagination and flexible field selection. |
| `ERPNEXT_LIST_WEBHOOKS` | List Webhooks | Tool to list webhook configurations in ERPNext. Use when you need to retrieve all configured webhooks or search for specific webhooks using filters. |
| `ERPNEXT_MAKE_DELIVERY_NOTE` | Make Delivery Note | Create a draft Delivery Note from an existing Sales Order in ERPNext. Use when you need to initiate shipment/delivery of items from a confirmed sales order. The created Delivery Note will be in draft state and can be modified before submission. |
| `ERPNEXT_MAKE_PURCHASE_ORDER` | Make Purchase Order | Create a draft Purchase Order from an existing Material Request in ERPNext. Use when you need to initiate procurement of items from an approved material request. The created Purchase Order will be in draft state and can be modified before submission. |
| `ERPNEXT_MAKE_SALES_INVOICE` | Make Sales Invoice | Tool to create a Sales Invoice from an existing Sales Order in ERPNext. Use when you need to generate an invoice for a confirmed sales order. The created invoice will be in draft state and can be submitted separately if needed. |
| `ERPNEXT_MAKE_STOCK_ENTRY` | Make Stock Entry | Tool to create a Stock Entry for material transfer, receipt, or issue in ERPNext. Use when you need to record inventory movements between warehouses or add/remove stock. For Material Receipt, include target warehouse and basic_rate. For Material Issue, include source warehouse. For Material Transfer, include both source and target warehouses. |
| `ERPNEXT_PING_API` | Ping API | Tool to check if the ERPNext/Frappe API is reachable. Use when you need to verify API connectivity or test authentication. |
| `ERPNEXT_RENAME_DOCUMENT` | Rename Document | Tool to rename an ERPNext document by changing its unique ID/name. Use when you need to change a document's primary identifier, optionally merging with an existing document. |
| `ERPNEXT_SAVE_DOCUMENT_WITH_ACTION` | Save Document with Action | Tool to save, submit, cancel, or update a document in ERPNext. Use when you need to create or modify documents in ERPNext. The doc parameter must be a JSON-serializable dictionary containing the document fields. |
| `ERPNEXT_SAVE_DOCUMENT` | Save Document | Tool to save an existing ERPNext/Frappe document with changes. Use when you need to update an existing document in the system. Requires the complete document object including all system fields and the fields being updated. |
| `ERPNEXT_GLOBAL_SEARCH` | Global Search | Tool to perform global text search across ERPNext documents. Use when you need to find documents, pages, or records by searching for keywords across the system. Results are ranked by relevance and include document type, name, content preview, and navigation route. |
| `ERPNEXT_SEARCH_LINK_FIELD_DOCUMENTS` | Search Link Field Documents | Tool to search for documents to link in ERPNext/Frappe Link fields. Use when you need autocomplete suggestions for Link fields or to find documents by name/text. |
| `ERPNEXT_SET_VALUE` | Set Value | Tool to set a specific field value on a document in ERPNext. Use when you need to update a single field without retrieving or modifying the entire document. |
| `ERPNEXT_SUBMIT_DOCUMENT` | Submit Document | Submit a draft document in ERPNext/Frappe to change its status from Draft to Submitted. Use for submittable DocTypes like Sales Invoice, Purchase Order, Journal Entry, etc. Document must exist in draft state (docstatus=0) before submission. |
| `ERPNEXT_UPDATE_ERPNEXT_DOCUMENT` | Update ERPNext document | Tool to update a specific ERPNext document. Acts like a PATCH request - only send the fields you want to change, not the whole document. Use when you need to modify specific fields of an existing document. |

## Supported Triggers

None listed.

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

The Erpnext MCP server is an implementation of the Model Context Protocol that connects your AI agent to Erpnext. It provides structured and secure access so your agent can perform Erpnext 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 Erpnext 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 Erpnext 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 Erpnext tools as needed
```python
# Create Tool Router session for Erpnext
session = composio.create(
    user_id=os.getenv("COMPOSIO_USER_ID"),
    toolkits=['erpnext']
)

url = session.mcp.url
```

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

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

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

No description provided.
```python
client = MultiServerMCPClient({
    "erpnext-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({
    "erpnext-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 Erpnext 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 Erpnext 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=['erpnext']
    )

    url = session.mcp.url
    
    client = MultiServerMCPClient({
        "erpnext-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 Erpnext 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: ['erpnext']
        }
    );

    const url = session.mcp.url;
    
    const client = new MultiServerMCPClient({
        "erpnext-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 Erpnext 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 Erpnext 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 Erpnext MCP Agent with another framework

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

## Related Toolkits

- [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly.
- [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place.
- [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations.
- [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals.
- [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem.
- [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity.
- [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently.
- [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place.
- [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time.
- [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time.
- [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place.
- [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place.
- [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place.
- [Beeminder](https://composio.dev/toolkits/beeminder) - Beeminder is an online goal-tracking platform that uses monetary pledges to keep you motivated. Stay accountable and hit your targets with real financial incentives.
- [Boxhero](https://composio.dev/toolkits/boxhero) - Boxhero is a cloud-based inventory management platform for SMBs, offering real-time updates, barcode scanning, and team collaboration. It helps businesses streamline stock tracking and analytics for smarter inventory decisions.
- [Breathe HR](https://composio.dev/toolkits/breathehr) - Breathe HR is cloud-based HR software for SMEs to manage employee data, absences, and performance. It simplifies HR admin, making it easy to keep employee records accurate and up to date.
- [Breeze](https://composio.dev/toolkits/breeze) - Breeze is a project management platform designed to help teams plan, track, and collaborate on projects. It streamlines workflows and keeps everyone on the same page.
- [Bugherd](https://composio.dev/toolkits/bugherd) - Bugherd is a visual feedback and bug tracking tool for websites. It helps teams and clients report website issues directly on live sites for faster fixes.
- [Canny](https://composio.dev/toolkits/canny) - Canny is a platform for managing customer feedback and feature requests. It helps teams prioritize product decisions based on real user insights.
- [Chmeetings](https://composio.dev/toolkits/chmeetings) - Chmeetings is a church management platform for events, members, donations, and volunteers. It streamlines church operations and improves community engagement.

## Frequently Asked Questions

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

With a standalone Erpnext MCP server, the agents and LLMs can only access a fixed set of Erpnext tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Erpnext 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 Erpnext tools.

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

Yes, absolutely. You can configure which Erpnext 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 Erpnext data and credentials are handled as safely as possible.

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