atc
MCP serverDev toolsThis integration connects your AI to Avalara's Tax Registration and Business Licenses services. Once added, your AI can help you handle tax registrations and business license filings through Avalara.
Use atc in Claude, ChatGPT or Ahel Desktop
Free. Sign in, add atc and connect your AI. About a minute.
Also: Claude Code · Cursor · Codex
Then ask your AI: use atc
Needs your own atc account. You sign in to it and approve access when you connect.
Details
Available today. Use it from your connected AI after setup.
Add the integration, then ask your AI to look up a tax registration or start a business license filing.
What your AI can do with it
- Look up tax registration information
- Start tax registrations
- File business license applications
- Manage business license filings
- Work with registrations and filings in one conversation
Install atc
The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.
Claude Code
claude mcp add --transport http --scope user atc 'https://mcp.avalara.com/atc'Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://mcp.avalara.com/atcAdd a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=atc&config=eyJ1cmwiOiJodHRwczovL21jcC5hdmFsYXJhLmNvbS9hdGMifQ==Open the link and Cursor adds the server at that address.
ChatGPT
https://mcp.avalara.com/atcIn Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add atc --url 'https://mcp.avalara.com/atc'Run it once, then sign in with codex mcp login atc if the server asks for an account.
From the project's README
As published by avadev/mcp in README.md. This repository publishes several servers, so only the opening is shown here.
This is a non-community repo, created and maintained by Avalara
Avalara MCP Servers
MCP (Model Context Protocol) servers connect AI applications with Avalara's tax compliance systems in a standardized way. MCP servers allow partners and developers to integrate AI-driven tax workflows, automate cross-border compliance, and access Avalara's regularly updated tax content.
Avalara-supported MCP servers include AvaTax, Returns, E-Invoicing and Live Reporting, Tax Registrations and Business Licenses and Exemption Certificate Management, Cross Border Trade, and Tax Content. More services will be added over time.
What you can do:
- Query real-time tax rates and calculations
- Access compliance monitoring and regulatory updates
- Manage exemption certificates, business licenses, and returns
- Retrieve documentation and guidance
Getting Started with Avalara MCP Servers
Learn how to set up and connect to Avalara Model Context Protocol (MCP) servers for AI-powered tax compliance integration.
Prerequisites
Shortened here. Read the whole README on GitHub.
Signals
- GitHub stars
- 5
- Last commit
- Jul 2026
Advanced
- Delivery
- atc MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
- Item type
- mcp-server
- Key
com-avalara-atc- Source
- github.com/avadev/mcp
- Hosted endpoint
https://mcp.avalara.com/atc