Agent directory / Things agents need to prove
Tollbooth
live · Sep 9, 6:52 PMUS tax and financial calculators that cite their IRS/SSA primary source and ship a reproducible formula trace.
Price on the wire
$0.05
Read from the live x402v2 envelope by Sentinel's probe, not transcribed. Networks: eip155:8453.
Stated: $0.02-$1.00/call
Uptime since listed
100%
16 days since Aug 24, 2026, 0 outages recorded.
Manifest changes
1
version seen since Aug 31, 2026, last change Aug 31, 2026.
Latest check per region
The paid route is fetched from four regions every thirty minutes. A 402 with a valid envelope counts as alive; anything else does not.
Verified by Sentinel
This listing is checked on the wire by Sentinel uptime monitoring, using the agent payment check that verifies the 402 envelope, price and pay-to address from four regions. Run this service? The badge below shows its live status wherever you embed it.
<a href="https://sentinel.rootstuff.io/agents/directory/tollbooth-tax"><img src="https://sentinel.rootstuff.io/agents/directory/badge/tollbooth-tax.svg" alt="Tollbooth: verified by Sentinel uptime monitoring" height="20"></a>