Tollbooth X402 runs on your own machine — the client starts it, so there is no endpoint to ping. 51 installs a week from npm. Last commit 14 Jul 2026.
Discover, quote, verify & self-check 56 x402 pay-per-call finance/tax calculators for AI agents.
Today is the operative word: we check Tollbooth X402 every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add tollbooth-x402 -- npx -y tollbooth-x402
{
"mcpServers": {
"tollbooth-x402": {
"args": [
"-y",
"tollbooth-x402"
],
"command": "npx"
}
}
}
[mcp_servers.tollbooth-x402]
command = "npx"
args = ["-y", "tollbooth-x402"]
{
"mcpServers": {
"tollbooth-x402": {
"args": [
"-y",
"tollbooth-x402"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"tollbooth-x402": {
"args": [
"-y",
"tollbooth-x402"
],
"command": "npx"
}
}
}
AI financial agent: due diligence, SEC 10-K, Kelly Criterion. Pay-per-call via x402 USDC.
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Answers built from our own checks of this server.