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Blackwall x402 Payment-Risk Oracle
x402
Blackwall x402 Payment-Risk Oracle is a paid API for AI agents from agent-egress-proxy.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns a GO / HOLD / STOP verdict before an agent signs an x402 payment, based on counterparty reputation and price-anomaly signals.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pre-signature x402 payment guardrail: returns a GO / HOLD / STOP verdict before an agent signs a payment, from behavioral counterparty reputation and price-anomaly signals.
Output
A JSON object containing a verdict string ('GO', 'HOLD', or 'STOP') indicating whether the payment is safe to sign, plus a receipt_id string for auditing and tracing the risk assessment.
Example use cases
Pre-flight check before autonomous agent pays
“My agent is about to send 2.00 USDC on Ethereum to counterparty 0x9f3a…b812 for an API resource — can you run a risk check and tell me if it's safe to sign before it goes through?”
Catch price-anomaly in recurring payment
“We have a recurring x402 payment of 0.10 USDC on Base to 0xDeF7…2209, but this cycle the requested amount jumped to 5.00 USDC — screen this for price anomalies and give me a verdict before I approve it.”
Unknown counterparty reputation check
“A new vendor just sent an x402 payment request for 1.25 USDC on Polygon, counterparty address 0x44aB…cc91 — I've never paid them before, so run a reputation check and tell me if I should proceed or hold.”
Technical details
Endpoint
POSThttps://agent-egress-proxy.onrender.com/v1/forecast-paymentWhen to prefer
Choose this endpoint when an AI agent is operating autonomously in an x402 payment flow and needs a pre-signature guardrail before committing funds. It is especially valuable when the counterparty is unknown, the requested amount seems anomalous relative to the resource, or the agent policy requires human-level risk gating without a human in the loop. Prefer this over generic blockchain explorers or address checkers when you need a single actionable verdict (GO/HOLD/STOP) combining both reputation and price-anomaly signals in one call.
Side effects
- Missing required fields (asset, chain, amount, or counterparty) returns a 400 validation error
- Unknown or unresolvable counterparty address may result in a HOLD verdict with low confidence
- Network or chain identifier not supported returns an error
- Service unavailable on the rendering host returns a 503
- Amount format mismatch (non-numeric string) causes a parsing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| assetrequired | string | |
| chainrequired | string | |
| payer | string | |
| amountrequired | string | |
| resource | string | |
| counterpartyrequired | string |
Output
Schema · Response
{
"verdict": "GO",
"receipt_id": "..."
}Tags
x402
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