underground.substratesymposium.com

Independent x402 trust profile · how we score

Safe to pay · trust score 90/100 · live

9/9~~live endpoints~~

100%~~uptime — 3 probes~~

$0.01–$1~~price / call~~

Base~~network~~

Safety signals

On-chain receiver—

Receiver stabilitystable

Risk levelclean

Flagsprice_high unverifiable

Listed bybazaar

First seen / last checked2026-07-31 / 2026-09-01

Endpoints

Endpoint	Status	Price	Trust
https://underground.substratesymposium.com/buy/catalog	✓ live	$0.01	90
https://underground.substratesymposium.com/buy/lavender	✓ live	$0.01	71
https://underground.substratesymposium.com/buy/aloe	✓ live	$0.01	71
https://underground.substratesymposium.com/api/merchant-key	✓ live	$1	75
https://underground.substratesymposium.com/api/data-daily	✓ live	$1	75
https://underground.substratesymposium.com/api/bartender-benchmark	✓ live	$1	75
https://underground.substratesymposium.com/buy/echeveria	✓ live	$0.01	75
https://underground.substratesymposium.com/buy/jade_plant	✓ live	$0.01	75

Before your agent pays underground.substratesymposium.com — get a live check: GET /trust?endpoint=<url>, free cached verdict GET /verify?endpoint=<url>, or the drop-in guard npm i pulsefeed-x402-guard.

Data from PulseFeed's continuous independent audit of the x402 ecosystem. Verdict reflects the last crawl (2026-09-01); use the live /trust check before paying. All audited services →