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CAPI2 Momentum Foundry – Change Risk Score
x402
CAPI2 Momentum Foundry – Change Risk Score is a paid API for AI agents from capi2-foundry.vandurmedries.workers.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-10-10).
Computes a risk score differential by comparing a 'before' JSON object to an 'after' JSON object, quantifying how much risk has changed between two states.
Price / call$0.012
Success—
StatusUnknown
How this service works
Paid agent utilities delivered after verified x402 settlement.
Output
Returns a JSON object containing a 'result' field with the computed change risk score, a 'createdAt' ISO timestamp, the 'productId' confirming which product ran, and a 'deliveryReceipt' object that includes the payer address, a unique receiptId, delivery timestamp, SHA-256 hashes of the input and result, an atomic USDC amount charged (12000 atomic units = $0.012), and a signature hash for verification.
Example use cases
Fraud detection on account updates
“A user just changed their shipping address and phone number simultaneously. Here's the account record before and after the update — can you run a change risk score on these two JSON objects so I know whether to flag this for manual review?”
Configuration change safety check
“Before we deploy this infrastructure config update, compare the before and after JSON and give me a risk score for the change — I want to know if we're introducing something dangerous.”
Loan application state risk delta
“A loan applicant just re-submitted with updated income and employment fields. Take the original application JSON and the revised one and calculate the change risk score so we can decide whether to re-run full underwriting.”
Technical details
Endpoint
POSThttps://capi2-foundry.vandurmedries.workers.dev/v1/products/change-risk-score/run?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured, paid, cryptographically receipted risk score comparing two discrete JSON states — particularly in compliance, fraud detection, or configuration safety workflows where auditability (via delivery receipt and SHA-256 hashes) matters. Prefer over custom diffing logic when you want a single scored output rather than a raw diff.
Side effects
- Missing or malformed 'before'/'after' fields returns a 4xx validation error
- Payment settlement failure via x402 blocks execution and returns 402 Payment Required
- Network timeout on the Cloudflare Worker returns 5xx
- Empty or non-object values for before/after may produce an empty or zero result
- Invalid JSON in request body returns parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| after | object | New JSON object |
| before | object | Prior JSON object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {},
"createdAt": "2026-09-23T00:00:00.000Z",
"productId": "change-risk-score",
"deliveryReceipt": {
"payer": "0x0000000000000000000000000000000000000000",
"productId": "change-risk-score",
"receiptId": "00000000-0000-4000-8000-000000000000",
"deliveredAt": "2026-09-23T00:00:00.000Z",
"inputSha256": "example-input-sha256",
"amountAtomic": "12000",
"resultSha256": "example-result-sha256",
"signatureSha256": "example-signature-sha256"
}
}
}Tags
x402
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