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payai.agentstools.dev x402 Preflight Trust Check
x402
payai.agentstools.dev x402 Preflight Trust Check is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Runs a composite trust assessment on an x402 payment endpoint before an agent pays it, returning a 0–100 score, category label, and per-dimension signals.
Price / call$0.005
Success—
StatusUnknown
How this service works
Preflight trust check of another x402 endpoint before an agent pays it. From the target resource URL: a composite trust score 0-100, a category (trusted / caution / untrusted / unknown), per-dimension flags, reasons and weighted signals. Scored from CDP x402 Bazaar discovery, an on-chain USDC payment-diversity sample, and a live 402 probe that the served payTo matches the listing. Trust indicators, not a guarantee.
Output
Returns a composite trust score (0–100), a category label (trusted / caution / untrusted / unknown), per-dimension flags and reasons (CDP Bazaar listing match, on-chain USDC payment diversity sample, live 402 probe result confirming payTo address consistency), and weighted signals — together forming a trust indicator profile for the target x402 endpoint.
Example use cases
Validate paid API before agent subscription
“I'm about to have my agent subscribe to this x402-gated data feed at https://market-data-api.example.com/prices. Can you check if it's trustworthy first and let me know the trust score and any red flags before I authorize the USDC payment?”
Verify payment endpoint matches blockchain records
“My agent found this x402 API endpoint that claims to serve premium analytics. Before paying, can you run a trust assessment on https://analytics-provider.example.com/api and confirm whether its payTo address actually matches what's registered on-chain?”
Screen multiple paid APIs for safety
“I have three different x402 endpoints my agent might use for real-time data: https://api-one.example.com, https://api-two.example.com, and https://api-three.example.com. Can you quickly check the trust score and category for each one so I know which is safest to pay?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/preflightWhen to prefer
Use this endpoint any time an AI agent is about to pay an x402-gated resource and needs a pre-payment trust signal. It is uniquely suited for x402 payment safety checks because it fuses three orthogonal signals: CDP Bazaar discovery, on-chain USDC payment diversity, and a live 402 probe. Prefer it over generic domain phishing checks (see sibling endpoint) when the target is specifically an x402/402-gated API rather than a merchant website.
Side effects
- Target URL is not an x402 endpoint — unknown category returned with low score
- Live 402 probe fails or times out — probe dimension flagged as unavailable
- Endpoint not found in CDP Bazaar — bazaar dimension returns no signal
- Invalid or malformed URL input — request rejected with validation error
- Network not supported — defaults to any-network scoring if hint not recognized
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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