Anrok MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Anrok MCP or direct API to calculate sales tax, manage transactions, review exemptions, and support compliance filings through natural language.

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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

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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.

SETUP GUIDE

Connect Anrok MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["anrok"],
  mcp: true,
});
Create a session scoped to Anrok and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "List recent sales tax transactions in Anrok",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Anrok request
SETUP GUIDE

Connect Anrok API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["anrok"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Anrok
3

Run Anrok tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List recent sales tax transactions in Anrok" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Anrok tool calls through the session, and print the final answer

Why Use Composio?

AI Native Anrok Integration

  • Supports both Anrok MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tax tool execution
  • Rich coverage for calculating tax, reviewing transactions, and managing exemptions

Secure Auth

  • Securely stores and applies your Anrok API key to requests
  • Central place to manage, scope, and revoke Anrok access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Anrok
  • Scoped, least privilege access to Anrok tax and compliance resources
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, Anrok requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Anrok connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Anrok account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Anrok actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Anrok at any time.

When you connect a Anrok account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Anrok as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Anrok. If Anrok lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Anrok at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Anrok connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Anrok rejects the old key. Create a new key in Anrok and reconnect the account from the Composio dashboard or by asking your agent to reconnect Anrok. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Anrok use. Paid plans add higher limits and team features. Your Anrok plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Anrok accounts).

With Composio, you connect Anrok once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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