Avalara AvaTax
com.avalaraPublished by avalara.comOfficial publisherv1.0.1Updated Oct 24, 2026
Access Avalara AvaTax API for tax calculation, transactions, nexus management, and compliance
The publisher's own server: Avalara Tax Content
Overview
Remote Avalara-hosted MCP server that lets an assistant query AvaTax for tax calculations, transactions, nexus and compliance data.
- What you can do
- Query real-time tax rates and run tax calculations
- Look up and manage transactions and nexus settings
- Access compliance monitoring and regulatory updates
- Retrieve related documentation and guidance
- When to use it
- Use it when an assistant needs to work with Avalara AvaTax tax data, such as estimating tax on a transaction, reviewing nexus, or checking compliance information, and the organization already has an Avalara subscription.
- Requirements
- A remote endpoint at mcp.avalara.com over streamable HTTP; an active Avalara subscription account; OAuth 2.1 sign-in and consent through a modern web browser; internet access. No environment variables or headers are declared.
Installation
In SourceWeft
- Open Avalara AvaTax in the dashboard and add it to a workspace.
- Connect the required credentials. They are stored privately and never shown on public pages.
- Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.avalara%2Favatax/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Other MCP clients
Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.
{
"mcpServers": {
"avalara-avatax": {
"type": "http",
"url": "https://mcp.avalara.com/avatax"
}
}
}README
[A-Check] Avalara
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
To connect to Avalara MCP servers, you need to have:
- Avalara subscription: You must have an active Avalara account
- An AI client: Programmatic clients built using FastMCP or any other MCP-compatible library.
- A modern web browser: Required for the OAuth 2.1 authorization flow.
How to connect:
Step 1: Set up the MCP client Follow the steps provided on the individual MCP server pages.
Step 2: Authorize access
- When prompted, your MCP client redirects you to Avalara's secure sign in page
- Sign in with your Avalara credentials
- Review the permissions requested by the client for access to specific MCP server capabilities
- Grant consent to complete the OAuth flow
Available MCP Servers
Troubleshooting common issues:
- Connection failed: Verify your Avalara account status and internet connection.
- Permission denied: Make ensure your account has access to the requested services.
- HTTP 429 (Too Many Requests): You've exceeded the server's rate limit.
- Wait a few minutes before retrying.
- Check the server's rate limit details on its individual page.
Source: README.md at commit 0f82df1
Tools
0Version history
1- v1.0.1LatestSep 16, 2026
Score
75% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
- Reached in the last 30 daysRequired25 pts
- Auth declaredRequired10 pts
- Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
- DescriptionRequired15 pts
- Logo10 pts
- Documentation15 pts
- License10 pts
Declare a license in the repository or the registry entry.
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