Agent directory / Things agents need to prove
Sentinel Agent Services
live · Oct 24, 9:39 PMThis directory's own catalog, payable: the four-region consensus check of any URL ($0.02), single-shot probes for $0.01 (SSL grade, DNS with resolver propagation, domain expiry, headers, redirects, port, ping) and a payment-envelope reader that inspects an x402 or MPP 402 without paying it ($0.02). Every response carries an Ed25519-signed receipt, verifiable free. First-party, monitored like every other entry.
Price on the wire
$0.02
Read from the live mpp envelope on /mpp/check, not transcribed. A service that prices each route differently is observed on this one. Networks: tempo.
Stated: $0.01 to $0.50/call
Uptime since listed
66.21%
54 days since Sep 1, 2026, 1 outage recorded.
Manifest changes
2
versions seen since Sep 1, 2026, last change Sep 11, 2026.
Latest check per region
The paid route is fetched from fifteen 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 fifteen regions. Run this service? The badge below shows its live status wherever you embed it.
<a href="https://sentinel.rootstuff.io/agents/directory/sentinel-paid-check"><img src="https://sentinel.rootstuff.io/agents/directory/badge/sentinel-paid-check.svg" alt="Sentinel Agent Services: verified by Sentinel uptime monitoring" height="20"></a>