US sales/use tax, nexus thresholds, capital gains and 1099-DA tools for AI agent transactions.
Connect Runs on your machine
claude mcp add agenttax-mcp -e AGENTTAX_API_KEY=<AGENTTAX_API_KEY> -- npx -y @agenttax/[email protected]
{
"mcpServers": {
"agenttax-mcp": {
"command": "npx",
"args": [
"-y",
"@agenttax/[email protected]"
],
"env": {
"AGENTTAX_API_KEY": "<AGENTTAX_API_KEY>"
}
}
}
}
{
"mcpServers": {
"agenttax-mcp": {
"command": "npx",
"args": [
"-y",
"@agenttax/[email protected]"
],
"env": {
"AGENTTAX_API_KEY": "<AGENTTAX_API_KEY>"
}
}
}
}
{
"servers": {
"agenttax-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@agenttax/[email protected]"
],
"env": {
"AGENTTAX_API_KEY": "<AGENTTAX_API_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
AGENTTAX_API_KEYOptional, secret | AgentTax API key (free tier at agenttax.io). Optional: without it the server runs in demo mode, 10 calls/day. |
Details
| Package | @agenttax/[email protected] (NPM, stdio) |
| First published | 5 Nov 2026 |
| Last updated | 5 Nov 2026 |
| Registry name | io.github.AgentTax/agenttax-mcp |
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