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x402 Quote Inspector
x402
x402 Quote Inspector is a paid API for AI agents from x402-seller.558686.xyz, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Inspects and validates an x402 payment quote object, reporting on its structure, acceptability, and recommended next action
Price / call$0.001
Success—
StatusDown
How this service works
Operational x402 seller tools for market benchmark, buyer shortlist, seller action plan, directory rank tracker, quote inspector, competitor listing audit, directory submission kit, price band advice, and buyer intent scoring workflows.
Output
Returns a JSON object with quoteOk (boolean indicating validity), accepts (parsed accepts field), findings (list of issues or observations), and nextAction (recommended step for the seller or buyer), along with the original input echoed back.
Example use cases
Validate payment quote before API launch
“I'm about to deploy an x402 payment endpoint and want to make sure my quote structure is correct. Can you validate this quote object and let me know if there are any issues or what I should fix: {"status":402,"accepts":[{"amount":"500000","scheme":"tiered","network":"eip155:1"}]}”
Debug failed payment response
“A buyer got a 402 response from our API but they're saying it doesn't look right. Can you inspect this quote we sent and tell me what's wrong with it and how they should proceed: {"status":402,"accepts":[{"amount":"2500","scheme":"subscription"}],"currency":"USD"}”
Review competitor payment scheme
“I'm looking at how a competitor structures their x402 payment quotes. Can you analyze this quote object and tell me if it's well-formed, what it accepts, and what they're probably asking buyers to do next: {"status":402,"accepts":[{"amount":"100","scheme":"exact","network":"eip155:137"},{"amount":"250","scheme":"exact","network":"eip155:8453"}]}”
Technical details
Endpoint
GEThttps://x402-seller.558686.xyz/v1/tools/x402-quote-inspectorWhen to prefer
Use this endpoint when you need to programmatically inspect or debug an x402 payment quote — especially when building or troubleshooting x402-monetized API routes and want to confirm that a 402 response is correctly structured and actionable. Prefer this over manual inspection when you need structured findings and a recommended next action.
Side effects
- Missing or malformed quote input returns an error or empty findings
- Non-JSON quote string may fail to parse
- Invalid x402 quote structure produces quoteOk: false with findings explaining the issue
- Network or server downtime returns a non-200 HTTP response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| quote | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "x402-quote-inspector",
"input": {
"quote": {
"status": 402,
"accepts": [
{
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453"
}
]
}
},
"route": "/v1/tools/x402-quote-inspector",
"result": {
"accepts": "accepts_example",
"quoteOk": true,
"findings": [],
"nextAction": "nextAction_example"
},
"project": "x402-seller-growth-tools",
"deterministic": true
}
}Tags
x402
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