MCP server for AgentTax — tax compliance tools for AI agents
Connect Agenttax MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP server for AgentTax — tax compliance tools for AI agents. The agenttax mcp mcp server is what makes that connection.
Tax compliance for MCP tool developers and AI agents, powered by AgentTax.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
track_payment — Track a payment you received and calculate your sales tax liability. The primary tool for MCP tool developerscalculate_tax — Full tax calculation with complete audit trail. Use this when you need jurisdiction details, confidence scoring, and advisorieslog_trade — Sell trades return realized gain/loss with cost basis (FIFO, LIFO, or Specific ID)get_rates — Get tax rates for all 51 US jurisdictions or a single stateconfigure_nexus — Set which states you have economic nexus in. Required for sellers to get non-zero tax resultscheck_health — The check_health tool exposed by this server@agenttax/mcp-server on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.
Configuration is passed through the environment: AGENTTAX_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Among the payments and commerce options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Agenttax MCP's toolset — track_payment, calculate_tax, log_trade and 3 more — is a fair guide to whether it matches your workflow. It is maintained by agenttax; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| track_payment | Track a payment you received and calculate your sales tax liability. The primary tool for MCP tool developers. |
| calculate_tax | Full tax calculation with complete audit trail. Use this when you need jurisdiction details, confidence scoring, and advisories. |
| log_trade | Sell trades return realized gain/loss with cost basis (FIFO, LIFO, or Specific ID). |
| get_rates | Get tax rates for all 51 US jurisdictions or a single state. |
| configure_nexus | Set which states you have economic nexus in. Required for sellers to get non-zero tax results. |
| check_health | The check_health tool exposed by this server. |
{
"mcpServers": {
"agenttax": {
"command": "npx",
"args": ["@agenttax/mcp-server"],
"env": {
"AGENTTAX_API_KEY": "atx_live_your_key"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| AGENTTAX_API_KEY | Credential the server authenticates with. | Yes |
Payments infrastructure meets AI — customers, invoices, subscriptions and current API docs from Stripe's server.
Build for Shopify with current APIs — the official Dev MCP server for schema-accurate storefront and admin code.
Give your AI assistant a supervised window into your Interactive Brokers account — balances, positions, live quotes and orders.
Invoices, payments and disputes through PayPal's official server — commerce operations by conversation.
Enables querying and listing Azure resources and costs directly from an MCP client.
Empowers LLMs with Bitcoin Lightning Network payment capabilities via the ZBD API.