# How to connect Anrok to Claude

```json
{
  "title": "How to connect Anrok to Claude",
  "toolkit": "Anrok",
  "toolkit_slug": "anrok",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/anrok/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/anrok/framework/claude-cowork.md",
  "updated_at": "2026-11-12T05:31:53.425Z"
}
```

## Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.
This guide walks you through the easiest and most secure way to connect your Anrok account to Claude via Composio Connect, enabling it to list recent Anrok sales tax transactions, review Anrok exemption records for expired certificates, check Anrok filing data for California, and more such actions on your behalf without compromising your account security.
Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

## Also integrate Anrok with

- [ChatGPT](https://composio.dev/toolkits/anrok/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/anrok/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/anrok/framework/atomic-agent)

## Connect Anrok to Claude Cowork

### Connecting Anrok to Claude Web, Desktop, and Cowork
Two ways to add the Composio connector. Pick whichever you prefer.
### 1. Add with one click
Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.
[Add to Claude](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp)
### Add manually
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

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

The Anrok MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Anrok account. It provides structured and secure access to your sales tax calculations, customers, products, transactions, exemption certificates, and filings, so your agent can calculate transaction taxes, manage customer and product records, handle exemptions, review transactions and filings, and resolve taxable addresses on your behalf.
- Sales tax calculation and address resolution: Have your agent calculate tax for an invoice without recording a transaction, resolve customer addresses, identify taxable jurisdictions, and validate tax IDs.
- Customer and product management: Let the agent create and retrieve customers, list customer records, create and retrieve products, assign tax categories, and manage product mappings from billing integrations.
- Exemption certificate handling: Direct your agent to create exemption certificates or customer certificate requests, review certificate details, list certificates by customer or status, and archive certificates when they are no longer valid.
- Transaction management: Instruct your agent to create or update finalized invoice transactions, retrieve and list transactions, void transactions, or create a transaction that negates an earlier one.
- Filing and transaction review: Have your agent list jurisdiction filings, find the transactions associated with a filing, review filing conversion rates, and remove selected transactions from a filing.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `ANROK_ADD_PRODUCT_ID_MAPPING` | Add Product ID Mapping | Map a billing integration's source product ID to an existing Anrok product, optionally overwriting an existing source mapping. |
| `ANROK_ARCHIVE_EXEMPTION_CERTIFICATE` | Archive Exemption Certificate | Archive and invalidate an exemption certificate by its Anrok certificate ID. Anrok does not document a restore operation. |
| `ANROK_CALCULATE_TRANSACTION_TAX` | Calculate Transaction Tax | Calculate tax for an ephemeral invoice without recording a transaction in Anrok. |
| `ANROK_CREATE_CUSTOMER` | Create Customer | Create an Anrok customer with the external ID used to link transactions and exemption certificates. |
| `ANROK_CREATE_EXEMPTION_CERTIFICATE` | Create Exemption Certificate | Create a customer tax-exemption certificate from a local or uploaded file and jurisdiction coverage. Raw files are capped at 4 MB to keep the encoded request within host payload limits. Supplying a customer name may also create a missing customer. |
| `ANROK_CREATE_EXEMPTION_CERTIFICATE_REQUEST` | Create Exemption Certificate Request | Create a premium customer certificate request, emailing its submission link by default, and optionally auto-approve eligible submissions. Supplying a customer name may also create a missing customer. |
| `ANROK_CREATE_OR_UPDATE_TRANSACTION` | Create or Update Transaction | Create a finalized invoice transaction. If a transaction with the same seller-wide ID exists, overwrite or replace it with the supplied invoice data and recalculate tax. Supplying a customer name with a customer ID may also create a missing customer. |
| `ANROK_CREATE_PRODUCT` | Create Product | Create an Anrok product ID and assign its product tax category. |
| `ANROK_CREATE_TRANSACTION_NEGATION` | Create Transaction Negation | Create a new transaction that exactly negates an existing transaction, lowering or reversing the original transaction's reported sales and tax totals, optionally enforcing its expected version. |
| `ANROK_GET_CUSTOMER` | Get Customer | Retrieve one Anrok customer by its external customer ID. |
| `ANROK_GET_EXEMPTION_CERTIFICATE` | Get Exemption Certificate | Retrieve one exemption certificate and its status and jurisdiction details by certificate ID. |
| `ANROK_GET_PRODUCT` | Get Product | Retrieve one Anrok product by its external product ID. |
| `ANROK_GET_TRANSACTION` | Get Transaction | Retrieve the latest version of one Anrok transaction, including complete invoice and tax-calculation details for normal transactions. |
| `ANROK_LIST_CUSTOMERS` | List Customers | Return one page of seller-account customers in ascending customer ID order. |
| `ANROK_LIST_EXEMPTION_CERTIFICATES` | List Exemption Certificates | Return one page of exemption certificates, optionally filtered by customer or certificate status. |
| `ANROK_LIST_FILINGS` | List Filings | Return one premium page of jurisdiction filings, optionally filtered by jurisdiction and filing-period end date range. |
| `ANROK_LIST_FILING_TRANSACTION_IDS` | List Filing Transaction IDs | Return one premium page of transaction IDs associated with a jurisdiction filing. |
| `ANROK_LIST_FILING_TRANSACTIONS_WITH_CONVERSION_RATES` | List Filing Transactions with Conversion Rates | Return one premium page of a jurisdiction filing's transactions with their filing conversion rates. Rates may change until the filing is finalized. |
| `ANROK_LIST_PRODUCT_ID_MAPPINGS` | List Product ID Mappings | List all source-to-Anrok product ID mappings for one Anrok-built billing integration. |
| `ANROK_LIST_PRODUCTS` | List Products | Return one page of Anrok products, optionally including default and integration shipping products. |
| `ANROK_LIST_PRODUCT_TAX_CATEGORIES` | List Product Tax Categories | List the standard and seller-specific product tax categories available for assigning to products. |
| `ANROK_LIST_TRANSACTIONS` | List Transactions | Return one premium page of Anrok transactions, optionally filtered by modification time or filing association. |
| `ANROK_REMOVE_TRANSACTIONS_FROM_FILING` | Remove Transactions from Filing | Remove 1-100 transactions from a premium Anrok jurisdiction filing and return the removal result for every requested transaction ID. This cannot be undone; Anrok documents no restore operation. |
| `ANROK_RESOLVE_ADDRESS` | Resolve Address | Resolve a customer address to its normalized form and return the applicable taxable jurisdictions. |
| `ANROK_VALIDATE_TAX_IDS` | Validate Tax IDs | Validate premium customer tax IDs for the taxable jurisdictions resolved from a customer address. |
| `ANROK_VOID_TRANSACTION` | Void Transaction | Void an existing transaction so it is no longer included in returns or sales totals, optionally requiring its current version. This cannot be undone; Anrok documents no restore or unvoid operation. |

## Supported Triggers

None listed.

## Troubleshooting

### 1. Why does Claude not use the Composio connector for Anrok?

The connector can show as connected, but Claude must use it in each Anrok conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to Anrok again.

### 2. Why does Claude show an MCP server error before Anrok connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Anrok.
- Check that the connector URL is https://connect.composio.dev/mcp.
- Connectors run from Anthropic's cloud, so your device network is usually not the problem.
- Add the connector again from Customize > Connectors, then ask Claude to connect Anrok.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the Anrok authorization link not work?

The Composio connector is one server. Your Anrok account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the Anrok connection.
- Composio creates a fresh Anrok authorization link.
- Open that link in your browser and finish the Anrok sign-in.

### 4. Why do Anrok actions fail after they worked before?

The Anrok connection can expire or lose permission.
- Ask Claude to inspect the Anrok connection.
- If the connection is unhealthy, disconnect it when Claude prompts you.
- Reconnect the Anrok account and retry the action.
- If Claude shows a permission prompt, approve it before Claude changes data in Anrok.
- If the action still fails with a permission error, check that the connected account has that permission in Anrok itself.

### 5. How do I switch to a different Anrok account?

Claude can manage the Anrok connection for you.
- Ask Claude to disconnect or delete the current Anrok account.
- Ask Claude to connect Anrok again.
- Open the new Composio authorization link for Anrok.
- Sign in with the other Anrok account in the browser.
- After the account connects, ask Claude to retry the Anrok task.

### 6. Why is my Anrok connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Anrok connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If Anrok tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
- On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Anrok.

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

The Anrok MCP server connects Claude Web, Desktop, and Cowork to your Anrok account through Composio. Once connected, Claude can use the available Anrok tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Anrok MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/anrok/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/anrok/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/anrok/framework/atomic-agent)

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## Frequently Asked Questions

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

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

### Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork 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 Anrok tools.

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

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

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