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How to connect Anrok with ChatGPT

Connect ChatGPT to Anrok MCP. List recent anrok sales tax transactions, review anrok exemption records for expired certificates, and more using natural language, with authentication handled for you.

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Anrok is a sales tax platform for software businesses that automates calculations, compliance, filings, and exemption management. It helps finance teams stay accurate and reduce the manual work of tax operations.

26 Tools

How to connect Anrok MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Anrok account to ChatGPT via Composio Connect, so it can calculate sales tax, review transactions, manage exemptions, check filing data, and support compliance work through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Anrok integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,700+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Anrok to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Anrok messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Anrok.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Anrok

  • List recent Anrok sales tax transactions
  • Review Anrok exemption records for expired certificates
  • Check Anrok filing data for California

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

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

Add Product ID Mapping

Map a billing integration's source product ID to an existing Anrok product, optionally overwriting an existing source mapping.

Archive Exemption Certificate

Archive and invalidate an exemption certificate by its Anrok certificate ID.

Calculate Transaction Tax

Calculate tax for an ephemeral invoice without recording a transaction in Anrok.

Create Customer

Create an Anrok customer with the external ID used to link transactions and exemption certificates.

Create Exemption Certificate

Create a customer tax-exemption certificate from a local or uploaded file and jurisdiction coverage.

Create Exemption Certificate Request

Create a premium customer certificate request, emailing its submission link by default, and optionally auto-approve eligible submissions.

Create or Update Transaction

Create a finalized invoice transaction.

Create Product

Create an Anrok product ID and assign its product tax category.

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.

Get Customer

Retrieve one Anrok customer by its external customer ID.

Get Exemption Certificate

Retrieve one exemption certificate and its status and jurisdiction details by certificate ID.

Get Product

Retrieve one Anrok product by its external product ID.

Get Transaction

Retrieve the latest version of one Anrok transaction, including complete invoice and tax-calculation details for normal transactions.

List Customers

Return one page of seller-account customers in ascending customer ID order.

List Exemption Certificates

Return one page of exemption certificates, optionally filtered by customer or certificate status.

List Filings

Return one premium page of jurisdiction filings, optionally filtered by jurisdiction and filing-period end date range.

List Filing Transaction IDs

Return one premium page of transaction IDs associated with a jurisdiction filing.

List Filing Transactions with Conversion Rates

Return one premium page of a jurisdiction filing's transactions with their filing conversion rates.

List Product ID Mappings

List all source-to-Anrok product ID mappings for one Anrok-built billing integration.

List Products

Return one page of Anrok products, optionally including default and integration shipping products.

List Product Tax Categories

List the standard and seller-specific product tax categories available for assigning to products.

List Transactions

Return one premium page of Anrok transactions, optionally filtered by modification time or filing association.

Remove Transactions from Filing

Remove 1-100 transactions from a premium Anrok jurisdiction filing and return the removal result for every requested transaction ID.

Resolve Address

Resolve a customer address to its normalized form and return the applicable taxable jurisdictions.

Validate Tax IDs

Validate premium customer tax IDs for the taxable jurisdictions resolved from a customer address.

Void Transaction

Void an existing transaction so it is no longer included in returns or sales totals, optionally requiring its current version.

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FAQ

Frequently asked questions

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.

Yes, you can. ChatGPT 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.

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.

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.

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