# assay.nominal-labs.com

> 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

- **Domain**: `assay.nominal-labs.com`
- **Provider**: assay.nominal-labs.com (https://assay.nominal-labs.com)
- **Kind**: paid_api
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 45%
- **Payment protocol**: x402 · network `eip155:8453` · ≥ $0.005
- **Wallet**: `0x70900f0d5bae3f6f6378a2ff74f868810b5140d0`

## URLs
- Agent card: https://assay.nominal-labs.com/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/assay.nominal-labs.com
- Documentation: https://assay.nominal-labs.com/score