Score

assay.nominal-labs.com · General

Quality score for any x402 service, earned by real paid probes with on-chain receipts: composite 0-100, component breakdown (payment settlement, schema conformance, ground-truth accuracy, LLM-judged quality), 7-day trend, probe count. Scores publish only after 20+ probes across days; daily corpus digests are Bitcoin-anchored via OpenTimestamps. Query: /score?service={url-encoded resource URL}. Free: /tier/{url}, /leaderboard. Agent guide: https://assay.nominal-labs.com/SKILL.md

payment-native
x402-exact

Verified

Price and execution

Price: $0.005 USD credits / call
Trust tier: Verified
Execution: Managed call
Capability group: General

Interface snapshot

Protocol: HTTP operation
Operation: GET /score
Interface artifact: sha256:97609f78e4fb0d08355db178df31735f5111d97337700484b9360fafb69bc05c
Manifest digest: sha256:02a973bd641d2a183e31f86073298ad7cee3104e292517d7d11a96e479345295

Similar offerings

Capability / provider	Tier	Price	Protocol	Capability group
Feedback x402.ottoai.services Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General
V1 Ping x402.lucidcove.org Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General
V1 Ping x402-factory.com Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General