Endpoint · onchainGETassay.nominal-labs.com /score ?service=https%253A%252F%252Fapi.example.com%252Fdata
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…
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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.mdOverview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.005 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://assay.nominal-labs.com/score?service=https%253A%252F%252Fapi.example.com%252Fdata
Seen
first 35 days ago · last 22 days ago
38 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.2
UN
RATED
RATED
0.698 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.302: 0.102 uncertain ? + 0.200 short ? · 0.102 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.829 | 0.498 | 0 | −0.102 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.698 | gap to 1.000 = 0.302 · 0.200 short · 0.102 uncertain | 0.698 | −0.200 | −0.102 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.829 liveness
+ 0.200 × 1.000 price stability
= 0.698 → UNRATED: 36 of 30 paid calls weights 2026.09.2 · 36 samples · seed cap_01M1A51S3TK6T8VTDMN93CAYE5|2026-08-19T02:37:57.539Z|2026.09.2
Verify it yourself
npx teppi-check https://assay.nominal-labs.com/score?service=https%253A%252F%252Fapi.example.com%252Fdatacurl -s https://api.teppi.xyz/v1/trust/cap_01M1A51S3TK6T8VTDMN93CAYE5