How to integrate Taxjar MCP with OpenClaw

OpenClaw is the fastest growing agent harness out there, which can work 24/7 to automate almost any kind of tasks. However, its capabilities are limited to the tools it has access to. Composio allows your OpenClaw to access Taxjar with authentication management handled for you. You can execute actions on Taxjar via your favorite OpenClaw interface (Telegram, WhatsApp, TUI, etc), whichever you prefer.

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Api Key

TaxJar is a trusted sales tax automation platform for ecommerce and SaaS businesses. It delivers real-time tax calculations, accurate reporting, and seamless filing across all US states.

21 Tools

Introduction

OpenClaw is the fastest growing agent harness out there, which can work 24/7 to automate almost any kind of tasks. However, its capabilities are limited to the tools it has access to. Composio allows your OpenClaw to access Taxjar with authentication management handled for you. You can execute actions on Taxjar via your favorite OpenClaw interface (Telegram, WhatsApp, TUI, etc), whichever you prefer.

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Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

How to install Taxjar with OpenClaw

Using Composio API Key and Setup Prompt

Copy the setup prompt from the OpenClaw dashboard
  • Run it in your OpenClaw chat interface.
  • Authenticate Taxjar from the dashboard
  • Go back to your OpenClaw interface and start asking questions.

Using OpenClaw/Composio Plugin

1. Install OpenClaw Composio plugin

bash
openclaw plugins install @composio/openclaw-plugin

2. Copy the API Key from dashboard.composio.dev

3. Setup OpenClaw Config

bash
openclaw config set plugins.entries.composio.config.consumerKey "ck_your_key_here"

4. Restart OpenClaw

bash
openclaw gateway restart

5. Go to your chat interface and start asking questions.

6. When prompted, authenticate the app and you're all set.

How It Works

The plugin connects to Composio's MCP server at https://connect.composio.dev/mcp and registers all available tools directly into the OpenClaw agent. Tools are called by name — no extra search or execute steps needed.

If a tool returns an auth error, the agent will prompt you to connect that toolkit at dashboard.composio.dev.

Configuration

bash
{
  "plugins": {
    "entries": {
      "composio": {
        "enabled": true,
        "config": {
          "consumerKey": "ck_your_key_here"
        }
      }
    }
  }
}
OptionDescriptionDefault
enabledEnable or disable the plugintrue
consumerKeyYour Composio consumer key (ck_...)
mcpUrlMCP server URL (advanced)https://connect.composio.dev/mcp

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.

Conclusion

You've successfully integrated Taxjar with OpenClaw using Composio plugin. Now interact with Taxjar directly from your terminal, Web UI, or any messenger app using natural language commands.

Key benefits of this setup:

  • Seamless integration across TUI, Web UIs, and Messenger apps like Telegram, WhatsApp, Slack, etc.
  • Natural language commands for Taxjar operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • Programmatic tool calling for complex tool chaining

Next steps:

  • Try asking OpenClaw to perform various Taxjar operations
  • Explore cross-app workflows by connecting more toolkits like Calendar, Slack, Notion, etc.
  • Build complex automation scripts that leverage OpenClaw's 24/7 running capabilities
TOOLS

Supported Tools

Every Taxjar action and event your agent gets out of the box.

Calculate Sales Tax For An Order

Tool to calculate sales tax for an order.

Create Customer

Tool to create a new customer with exemption information.

Create Order Transaction

Creates a new order transaction in TaxJar for sales tax reporting and compliance.

Create Refund Transaction

Tool to create a new refund transaction.

Delete Customer

Tool to delete an existing customer.

Delete Order Transaction

Tool to delete an existing order transaction.

Delete Refund Transaction

Tool to delete an existing refund transaction.

List Customers

Lists all customer IDs from your TaxJar account.

List Nexus Regions

Tool to list existing nexus regions for an account.

List Order Transactions

List order transaction IDs within a date range.

List refund transactions

Lists refund transaction IDs within a specified date range.

List Tax Categories

Tool to list all product tax categories and their codes.

Show Customer

Tool to show an existing customer.

Show Order Transaction

Tool to show an existing order transaction by ID.

Show Refund Transaction

Retrieves detailed information about a specific refund transaction from TaxJar.

Show Tax Rates for a Location

Tool to show sales tax rates for a location.

Summarize Tax Rates for All Regions

Tool to retrieve minimum and average sales tax rates by region.

Update Customer

Tool to update an existing customer in TaxJar.

Update Order Transaction

Tool to update an existing order transaction.

Update Refund Transaction

Tool to update an existing refund transaction.

Validate VAT Number

Validates EU VAT identification numbers against the VIES (VAT Information Exchange System) database.

FAQ

Frequently asked questions

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.

Yes, you can. OpenClaw 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.

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.

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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