Avalara MCP server for Claude, ChatGPT, Claude Code and Cursor

Access/manage Avalara accounts, tax filing forms, address validation, and Accounts Payable configuration settings.

Ready to connect
Free
12 example tools

How to connect Avalara

1
Click Connect Avalara free and sign in to Avalara.
2
Add ContextGate to your AI app:
1. 1
  In Claude, open Settings → Connectors and click Add custom connector.
2. 2
  Name it ContextGate and paste this URL:
  https://api.contextgate.ai/mcp
3. 3
  Click Add, then Connect, and sign in to ContextGate.
4. 4
  In a chat, turn ContextGate on from the + menu → Connectors. Cowork and the desktop app use the same connectors.
The full Claude guide
1. 1
  In ChatGPT settings, open Apps & Connectors (or Connectors) → Advanced and turn on Developer mode.
2. 2
  Create a connector, choose OAuth, and paste this URL:
  https://api.contextgate.ai/mcp
3. 3
  Sign in to ContextGate when ChatGPT redirects you, then pick the connector in a chat.
The full ChatGPT guide
1. 1
  Run this in a terminal:
  claude mcp add --transport http contextgate https://api.contextgate.ai/mcp
2. 2
  Start Claude Code, run /mcp, choose contextgate and sign in to ContextGate.
The full Claude Code guide
Add to Cursor
1. 1
  Click Add to Cursor, or add this to ~/.cursor/mcp.json:
  { "mcpServers": { "contextgate": { "url": "https://api.contextgate.ai/mcp" } } }
2. 2
  In Cursor Settings → MCP, sign in to ContextGate when Cursor asks.
The full Cursor guide
Add to VS Code
1. 1
  Click Add to VS Code, or add this to .vscode/mcp.json:
  { "servers": { "contextgate": { "type": "http", "url": "https://api.contextgate.ai/mcp" } } }
2. 2
  Start the server when VS Code asks, sign in to ContextGate, and use it from Copilot Chat in Agent mode.
The full GitHub Copilot guide
1. 1
  Run this in a terminal:
  codex mcp add contextgate --url https://api.contextgate.ai/mcp
2. 2
  Then sign in to ContextGate:
  codex mcp login contextgate
The full Codex guide
1. 1
  Run this in a terminal:
  gemini mcp add --transport http contextgate https://api.contextgate.ai/mcp
2. 2
  In Gemini CLI, run /mcp auth contextgate and sign in to ContextGate.
The full Gemini CLI guide
1. 1
  Add a remote (HTTP) MCP server with this URL:
  https://api.contextgate.ai/mcp
2. 2
  Apps that support MCP sign-in ask you to sign in to ContextGate the first time they connect.
3. 3
  An app that can't sign in can use a workspace API key instead: create one under API keys and add ?api_key=<your key> to the URL.
More on adding it to any MCP app
3
Ask your AI app to use Avalara, then open Activity to see the call.

Avalara's own AvaTax MCP server

Avalara's AvaTax MCP server is now in ContextGate: in Add Connection, search for Avalara and sign in with your Avalara account. There's nothing to copy or paste.
Avalara describes it as access to the AvaTax API for tax calculation, transactions and nexus management.
Switch off any AvaTax tool you don't want your AI apps to use. Your policies check every call, and Activity keeps a record of it.

What you get with Avalara and ContextGate

Your AI apps can use AvalaraClaude, Cursor, ChatGPT and other AI apps reach Avalara through the one ContextGate connection you add to them.
You choose which tools they can useSwitch off any Avalara tool you don't want used. It's hidden from your AI apps and refused if called.
Every call is checked and recordedYour policies check each call (for example, personal data is hidden and secrets are blocked), and Activity keeps a record of it.

ContextGate sees only the tool calls that go through it, not your AI app's built-in tools or your chats.

Avalara tools

Examples of what your AI apps can do in Avalara. You'll see the exact list of tools after you connect it.