# How to integrate Taxjar MCP with OpenAI Agents SDK

```json
{
  "title": "How to integrate Taxjar MCP with OpenAI Agents SDK",
  "toolkit": "Taxjar",
  "toolkit_slug": "taxjar",
  "framework": "OpenAI Agents SDK",
  "framework_slug": "open-ai-agents-sdk",
  "url": "https://composio.dev/toolkits/taxjar/framework/open-ai-agents-sdk",
  "markdown_url": "https://composio.dev/toolkits/taxjar/framework/open-ai-agents-sdk.md",
  "updated_at": "2026-05-12T10:27:58.416Z"
}
```

## Introduction

This guide walks you through connecting Taxjar to the OpenAI Agents SDK using the Composio tool router. By the end, you'll have a working Taxjar agent that can calculate sales tax for a new order, list all order transactions this month, show your current nexus regions through natural language commands.
This guide will help you understand how to give your OpenAI Agents SDK agent real control over a Taxjar account through Composio's Taxjar MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Taxjar with

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

## TL;DR

Here's what you'll learn:
- Get and set up your OpenAI and Composio API keys
- Install the necessary dependencies
- Initialize Composio and create a Tool Router session for Taxjar
- Configure an AI agent that can use Taxjar as a tool
- Run a live chat session where you can ask the agent to perform Taxjar operations

## What is OpenAI Agents SDK?

The OpenAI Agents SDK is a lightweight framework for building AI agents that can use tools and maintain conversation state. It provides a simple interface for creating agents with hosted MCP tool support.
Key features include:
- Hosted MCP Tools: Connect to external services through hosted MCP endpoints
- SQLite Sessions: Persist conversation history across interactions
- Simple API: Clean interface with Agent, Runner, and tool configuration
- Streaming Support: Real-time response streaming for interactive applications

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

The Taxjar MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Taxjar account. It provides structured and secure access to your sales tax data, so your agent can perform actions like calculating sales tax, managing transactions, listing customers, and monitoring nexus regions on your behalf.
- Real-time tax calculation for orders: Instantly calculate accurate sales tax for new orders, factoring in nexus addresses, line items, shipping, and exemptions.
- Order and refund transaction management: Let your agent create, list, or delete order and refund transactions to streamline your sales and returns workflow.
- Customer database access: Effortlessly retrieve, list, or delete customer records for tax reporting and compliance purposes.
- Nexus region insights: Quickly identify and list all nexus regions where your business has sales tax obligations.
- Automated transaction reporting: Access up-to-date lists of transactions and refunds for reconciliation, filing, and audit readiness.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `TAXJAR_CALCULATE_SALES_TAX_FOR_AN_ORDER` | Calculate Sales Tax For An Order | Tool to calculate sales tax for an order. Use when you need an accurate tax calculation including nexus addresses, line items, shipping, and exemptions. |
| `TAXJAR_CREATE_CUSTOMER` | Create Customer | Tool to create a new customer with exemption information. Use when you need to add a customer to your TaxJar account for tax exemption management. |
| `TAXJAR_CREATE_ORDER_TRANSACTION` | Create Order Transaction | Creates a new order transaction in TaxJar for sales tax reporting and compliance. This action records order transactions that will appear in the TaxJar dashboard for tax filing purposes. The transaction includes customer location, order amounts, shipping costs, and sales tax collected. Important: The 'amount' field must include shipping but exclude sales tax. If line_items are provided, their sum (quantity * unit_price - discount) must equal amount minus shipping. |
| `TAXJAR_CREATE_REFUND_TRANSACTION` | Create Refund Transaction | Tool to create a new refund transaction. Use after confirming refund details. |
| `TAXJAR_DELETE_CUSTOMER` | Delete Customer | Tool to delete an existing customer. Use when you need to remove a previously created customer by its ID. Example: "Delete customer cust_12345". |
| `TAXJAR_DELETE_ORDER_TRANSACTION` | Delete Order Transaction | Tool to delete an existing order transaction. Use when you need to remove a previously created order transaction by its ID. Example: "Delete transaction abc123". |
| `TAXJAR_DELETE_REFUND_TRANSACTION` | Delete Refund Transaction | Tool to delete an existing refund transaction. Use when you need to remove a previously created refund transaction by its ID. Example: "Delete refund 243345". |
| `TAXJAR_LIST_CUSTOMERS` | List Customers | Lists all customer IDs from your TaxJar account. Returns a paginated list of customer IDs (strings). To get full details for a specific customer (including name, address, exemption type, etc.), use the customer ID with the 'Show Customer' action. Use this action to: - Browse all customers in your TaxJar account - Find customer IDs for further operations - Check which customers have been created |
| `TAXJAR_LIST_NEXUS_REGIONS` | List Nexus Regions | Tool to list existing nexus regions for an account. Use after authenticating your account to discover where you have nexus for sales tax purposes. |
| `TAXJAR_LIST_ORDER_TRANSACTIONS` | List Order Transactions | List order transaction IDs within a date range. Returns an array of transaction IDs (strings) for orders created between the specified dates. Use this to discover which orders exist in a date range, then use SHOW_ORDER_TRANSACTION to get details for specific IDs. |
| `TAXJAR_LIST_REFUND_TRANSACTIONS` | List refund transactions | Lists refund transaction IDs within a specified date range. Returns an array of transaction IDs only. To get detailed information about a specific refund, use the 'Show refund transaction' action with the ID. Useful for finding refunds created through the TaxJar API within a specific time period. |
| `TAXJAR_LIST_TAX_CATEGORIES` | List Tax Categories | Tool to list all product tax categories and their codes. Use when you need to discover available tax categories before assigning them to products. |
| `TAXJAR_SHOW_CUSTOMER` | Show Customer | Tool to show an existing customer. Use when you need to retrieve details of a specific customer via TaxJar API. |
| `TAXJAR_SHOW_ORDER_TRANSACTION` | Show Order Transaction | Tool to show an existing order transaction by ID. Use when you need to retrieve full details of a specific order transaction after creation or listing. |
| `TAXJAR_SHOW_REFUND_TRANSACTION` | Show Refund Transaction | Retrieves detailed information about a specific refund transaction from TaxJar. Use this tool when you need to: - View complete details of a refund transaction including amounts, addresses, and line items - Verify refund transaction data that was previously created - Audit refund information for tax reporting purposes Requires a valid transaction_id that was previously created through TaxJar's API. |
| `TAXJAR_SHOW_TAX_RATES_FOR_A_LOCATION` | Show Tax Rates for a Location | Tool to show sales tax rates for a location. Use when you need to retrieve sales tax rates for a specific ZIP code with optional address details (city, state, country, street). |
| `TAXJAR_SUMMARIZE_TAX_RATES_FOR_ALL_REGIONS` | Summarize Tax Rates for All Regions | Tool to retrieve minimum and average sales tax rates by region. Use when you need a backup of regional tax summary rates. |
| `TAXJAR_UPDATE_CUSTOMER` | Update Customer | Tool to update an existing customer in TaxJar. Use when you need to modify customer details such as exemption type, name, or address information. |
| `TAXJAR_UPDATE_ORDER_TRANSACTION` | Update Order Transaction | Tool to update an existing order transaction. Use when adjusting order details such as amount, shipping, or line items after creation. |
| `TAXJAR_UPDATE_REFUND_TRANSACTION` | Update Refund Transaction | Tool to update an existing refund transaction. Use when adjusting refund details such as amount, shipping, or line items after creation. |
| `TAXJAR_VALIDATE_VAT_NUMBER` | Validate VAT Number | Validates EU VAT identification numbers against the VIES (VAT Information Exchange System) database. Use this tool to: - Verify VAT number format and validity - Check if a VAT number is registered and active in the EU - Retrieve associated company name and address when available - Confirm tax-exempt eligibility before processing transactions The validation queries the European VIES database when available, returning company details for valid registrations. When VIES is unavailable, it falls back to format-based validation using regex patterns. |

## Supported Triggers

None listed.

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

The Taxjar MCP server is an implementation of the Model Context Protocol that connects your AI agent to Taxjar. It provides structured and secure access so your agent can perform Taxjar 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

Before starting, make sure you have:
- Composio API Key and OpenAI API Key
- Primary know-how of OpenAI Agents SDK
- A live Taxjar project
- Some knowledge of Python or Typescript

### 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).
- Go to Settings and copy your API key.

### 2. Install dependencies

Install the Composio SDK and the OpenAI Agents SDK.
```python
pip install composio_openai_agents openai-agents python-dotenv
```

```typescript
npm install @composio/openai-agents @openai/agents dotenv
```

### 3. Set up environment variables

Create a .env file and add your OpenAI and Composio API keys.
```bash
OPENAI_API_KEY=sk-...your-api-key
COMPOSIO_API_KEY=your-api-key
USER_ID=composio_user@gmail.com
```

### 4. Import dependencies

What's happening:
- You're importing all necessary libraries.
- The Composio and OpenAIAgentsProvider classes are imported to connect your OpenAI agent to Composio tools like Taxjar.
```python
import asyncio
import os
from dotenv import load_dotenv

from composio import Composio
from composio_openai_agents import OpenAIAgentsProvider
from agents import Agent, Runner, HostedMCPTool, SQLiteSession
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';
```

### 5. Set up the Composio instance

No description provided.
```python
load_dotenv()

api_key = os.getenv("COMPOSIO_API_KEY")
user_id = os.getenv("USER_ID")

if not api_key:
    raise RuntimeError("COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key")

# Initialize Composio
composio = Composio(api_key=api_key, provider=OpenAIAgentsProvider())
```

```typescript
dotenv.config();

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

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});
```

### 6. Create a Tool Router session

What is happening:
- You give the Tool Router the user id and the toolkits you want available. Here, it is only taxjar.
- The router checks the user's Taxjar connection and prepares the MCP endpoint.
- The returned session.mcp.url is the MCP URL that your agent will use to access Taxjar.
- This approach keeps things lightweight and lets the agent request Taxjar tools only when needed during the conversation.
```python
# Create a Taxjar Tool Router session
session = composio.create(
    user_id=user_id,
    toolkits=["taxjar"]
)

mcp_url = session.mcp.url
```

```typescript
// Create Tool Router session for Taxjar
const session = await composio.create(userId as string, {
  toolkits: ['taxjar'],
});
const mcpUrl = session.mcp.url;
```

### 7. Configure the agent

No description provided.
```python
# Configure agent with MCP tool
agent = Agent(
    name="Assistant",
    model="gpt-5",
    instructions=(
        "You are a helpful assistant that can access Taxjar. "
        "Help users perform Taxjar operations through natural language."
    ),
    tools=[
        HostedMCPTool(
            tool_config={
                "type": "mcp",
                "server_label": "tool_router",
                "server_url": mcp_url,
                "headers": {"x-api-key": api_key},
                "require_approval": "never",
            }
        )
    ],
)
```

```typescript
// Configure agent with MCP tool
const agent = new Agent({
  name: 'Assistant',
  model: 'gpt-5',
  instructions:
    'You are a helpful assistant that can access Taxjar. Help users perform Taxjar operations through natural language.',
  tools: [
    hostedMcpTool({
      serverLabel: 'tool_router',
      serverUrl: mcpUrl,
      headers: { 'x-api-key': composioApiKey },
      requireApproval: 'never',
    }),
  ],
});
```

### 8. Start chat loop and handle conversation

No description provided.
```python
print("\nComposio Tool Router session created.")

chat_session = SQLiteSession("conversation_openai_toolrouter")

print("\nChat started. Type your requests below.")
print("Commands: 'exit', 'quit', or 'q' to end\n")

async def main():
    try:
        result = await Runner.run(
            agent,
            "What can you help me with?",
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")
    except Exception as e:
        print(f"Error: {e}\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "q"}:
            print("Goodbye!")
            break

        result = await Runner.run(
            agent,
            user_input,
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")

asyncio.run(main())
```

```typescript
// Keep conversation state across turns
const conversationSession = new OpenAIConversationsSession();

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

console.log('\nComposio Tool Router session created.');
console.log('\nChat started. Type your requests below.');
console.log("Commands: 'exit', 'quit', or 'q' to end\n");

try {
  const first = await run(agent, 'What can you help me with?', { session: conversationSession });
  console.log(`Assistant: ${first.finalOutput}\n`);
} catch (e) {
  console.error('Error:', e instanceof Error ? e.message : e, '\n');
}

rl.prompt();

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

  if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
    console.log('Goodbye!');
    rl.close();
    process.exit(0);
  }

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

  try {
    const result = await run(agent, text, { session: conversationSession });
    console.log(`\nAssistant: ${result.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();
});

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

## Complete Code

```python
import asyncio
import os
from dotenv import load_dotenv

from composio import Composio
from composio_openai_agents import OpenAIAgentsProvider
from agents import Agent, Runner, HostedMCPTool, SQLiteSession

load_dotenv()

api_key = os.getenv("COMPOSIO_API_KEY")
user_id = os.getenv("USER_ID")

if not api_key:
    raise RuntimeError("COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key")

# Initialize Composio
composio = Composio(api_key=api_key, provider=OpenAIAgentsProvider())

# Create Tool Router session
session = composio.create(
    user_id=user_id,
    toolkits=["taxjar"]
)
mcp_url = session.mcp.url

# Configure agent with MCP tool
agent = Agent(
    name="Assistant",
    model="gpt-5",
    instructions=(
        "You are a helpful assistant that can access Taxjar. "
        "Help users perform Taxjar operations through natural language."
    ),
    tools=[
        HostedMCPTool(
            tool_config={
                "type": "mcp",
                "server_label": "tool_router",
                "server_url": mcp_url,
                "headers": {"x-api-key": api_key},
                "require_approval": "never",
            }
        )
    ],
)

print("\nComposio Tool Router session created.")

chat_session = SQLiteSession("conversation_openai_toolrouter")

print("\nChat started. Type your requests below.")
print("Commands: 'exit', 'quit', or 'q' to end\n")

async def main():
    try:
        result = await Runner.run(
            agent,
            "What can you help me with?",
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")
    except Exception as e:
        print(f"Error: {e}\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "q"}:
            print("Goodbye!")
            break

        result = await Runner.run(
            agent,
            user_input,
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")

asyncio.run(main())
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';

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

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});

async function main() {
  // Create Tool Router session
  const session = await composio.create(userId as string, {
    toolkits: ['taxjar'],
  });
  const mcpUrl = session.mcp.url;

  // Configure agent with MCP tool
  const agent = new Agent({
    name: 'Assistant',
    model: 'gpt-5',
    instructions:
      'You are a helpful assistant that can access Taxjar. Help users perform Taxjar operations through natural language.',
    tools: [
      hostedMcpTool({
        serverLabel: 'tool_router',
        serverUrl: mcpUrl,
        headers: { 'x-api-key': composioApiKey },
        requireApproval: 'never',
      }),
    ],
  });

  // Keep conversation state across turns
  const conversationSession = new OpenAIConversationsSession();

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

  console.log('\nComposio Tool Router session created.');
  console.log('\nChat started. Type your requests below.');
  console.log("Commands: 'exit', 'quit', or 'q' to end\n");

  try {
    const first = await run(agent, 'What can you help me with?', { session: conversationSession });
    console.log(`Assistant: ${first.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();

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

    if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
      console.log('Goodbye!');
      rl.close();
      process.exit(0);
    }

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

    try {
      const result = await run(agent, text, { session: conversationSession });
      console.log(`\nAssistant: ${result.finalOutput}\n`);
    } catch (e) {
      console.error('Error:', e instanceof Error ? e.message : e, '\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

This was a starter code for integrating Taxjar MCP with OpenAI Agents SDK to build a functional AI agent that can interact with Taxjar.
Key features:
- Hosted MCP tool integration through Composio's Tool Router
- SQLite session persistence for conversation history
- Simple async chat loop for interactive testing
You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.

## How to build Taxjar MCP Agent with another framework

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

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- [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 Taxjar MCP?

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

### Can I use Tool Router MCP with OpenAI Agents SDK?

Yes, you can. OpenAI Agents SDK 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 Taxjar tools.

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

Yes, absolutely. You can configure which Taxjar 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 Taxjar 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)