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x402 Payment Preflight Check
x402
x402 Payment Preflight Check is a paid API for AI agents from agent-economy-signal-x402-mainnet.bronzetti-andrea.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Inspects an x402-gated endpoint before payment to return risk signals, payment details, and a go/no-go action recommendation for autonomous agents.
Price / call$0.003
Success—
StatusUnknown
How this service works
Machine-readable pay-per-request intelligence for autonomous agents on Base mainnet. x402 v2 resources expose deterministic decisions, market demand signals, payment preflight checks, repository intelligence, crypto catalysts, OpenAPI integration analysis and token liquidity signals.
Output
Returns a JSON object indicating whether the target URL is payable, the recipient wallet address, payment scheme, Base mainnet chain ID, estimated USD cost, a next-action recommendation (e.g. PAY_IF_THE_RESOURCE_MATCHES_YOUR_TASK), any risk signals, whether the endpoint has bazaar metadata, and a validity window in seconds.
Example use cases
Pre-payment risk check for agent
“My agent is about to pay for the x402 resource at https://someapi.example.com/premium/data — can you run a preflight on it first and tell me the risk signals and whether it's safe to pay?”
Cost verification before USDC spend
“Before my agent calls https://market-intel.example.com/premium/signals, do a preflight check so I know exactly how much USDC it costs and what address the payment goes to on Base mainnet.”
Validating bazaar-listed x402 endpoint
“I found an x402 endpoint on the bazaar at https://repo-intel.example.com/premium/catalyst — preflight it for me and confirm it's a legit payable resource with no risk flags before I authorize the payment.”
Technical details
Endpoint
GEThttps://agent-economy-signal-x402-mainnet.bronzetti-andrea.workers.dev/premium/x402-preflightWhen to prefer
Use this endpoint when an AI agent needs to inspect an x402-gated API before committing a micropayment — especially when risk assessment, cost verification, or wallet address confirmation is needed prior to executing a USDC transaction on Base mainnet. Prefer this over directly attempting the paid call when operating autonomously with budget constraints or when vetting unknown x402 providers.
Side effects
- Invalid or malformed URL returns an error response
- Target endpoint does not implement x402 and returns non-402 status
- Preflight result expires after validity_for_seconds elapses requiring a fresh call
- Network connectivity issues to the target endpoint cause inspection failure
- Non-HTTPS URLs are rejected by URI format validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "payable",
"target": "https://example.com/premium/resource",
"payment": {
"pay_to": "0x0000000000000000000000000000000000000000",
"scheme": "exact",
"network": "eip155:8453",
"x402_version": 2,
"estimated_usd": 0.005
},
"product": "x402 Purchase Preflight",
"version": "1.0.0",
"price_usd": 0.003,
"next_action": "PAY_IF_THE_RESOURCE_MATCHES_YOUR_TASK",
"generated_at": "2026-08-25T18:00:00.000Z",
"risk_signals": [],
"bazaar_metadata": true,
"valid_for_seconds": 60
}
}Tags
x402
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