$0.003
per call · USD Coin on Base
Compares two submitted sample sets feature by feature and returns deterministic drift metrics. Continuous features are binned on the combined value range and receive PSI, Jensen-Shannon divergence and a Kolmogorov-Smirnov statistic; categorical features receive PSI and Jensen-Shannon divergence over exact category labels. The response names every feature, its sample counts, the metric values, the threshold used, and the reason a feature was flagged.
Endpoint
POST https://modell.halowerk.com/v1/drift-check2
Calls / 30d
2
Unique payers / 30d
Aug 30
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://modell.halowerk.com/v1/drift-check", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"bins": 5,
"current_samples": {
"risk_score": [
0.14,
0.19,
0.23,
0.32,
0.4,
0.44,
0.48,
0.52
],
"segment": [
"retail",
"smb",
"smb",
"enterprise",
"enterprise",
"enterprise"
]
},
"feature_types": {
"risk_score": "continuous",
"segment": "categorical"
},
"reference_samples": {
"risk_score": [
0.12,
0.18,
0.2,
0.21,
0.25,
0.28,
0.31,
0.34
],
"segment": [
"retail",
"retail",
"smb",
"smb",
"enterprise",
"retail"
]
},
"threshold": 0.2
}),
});
const data = await res.json();curl -X POST \
"https://modell.halowerk.com/v1/drift-check" \
-H "Content-Type: application/json" \
-d '{"bins":5,"current_samples":{"risk_score":[0.14,0.19,0.23,0.32,0.4,0.44,0.48,0.52],"segment":["retail","smb","smb","enterprise","enterprise","enterprise"]},"feature_types":{"risk_score":"continuous","segment":"categorical"},"reference_samples":{"risk_score":[0.12,0.18,0.2,0.21,0.25,0.28,0.31,0.34],"segment":["retail","retail","smb","smb","enterprise","retail"]},"threshold":0.2}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"drift_detected": true,
"features": [
{
"drift": true,
"feature": "risk_score",
"jensen_shannon": 0.189,
"ks": 0.5,
"psi": 0.612345,
"type": "continuous"
}
],
"summary": {
"features_checked": 2,
"flagged_features": 1,
"threshold": 0.2
}
}Payment details
0x2880edfff13100677bf97a3cbdf3bc34771c4e5eUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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