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x402 Endpoint Validator / Checker
x402
x402 Endpoint Validator / Checker is a paid API for AI agents from solana-token-check.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-10).
Validates and inspects an x402 pay-per-call HTTP endpoint, returning its payment options, pricing, network compatibility, and overall verdict
Price / call$0.002
Success—
StatusUnknown
How this service works
Cheap pay-per-call Solana data: token risk check, trending tokens, newest tokens, wallet snapshot, token price feed, full token due-diligence report, transaction explainer, address profile, China trending topics. USDC on Solana or Base via x402, no account, no API key.
Output
Returns a JSON object containing: the endpoint URL, a verdict (e.g. 'ok'), HTTP status code, x402 version number, number of mainnet payment options, the cheapest price in USD, a list of payment options with network and asset details, any issues detected, and a human-readable English summary of the endpoint's payment configuration.
Example use cases
Pre-flight check before paying
“Before I pay to call https://api.example.com/data, can you verify it's a legitimate x402 endpoint and tell me the cheapest USDC option available and whether it's on mainnet?”
Comparing x402 API costs
“I'm evaluating two x402 APIs — can you check https://solana-token-check.vercel.app/v1/token-risk and tell me the price, supported networks, and whether there are any issues with its x402 configuration?”
Debugging a broken x402 integration
“My x402 call to https://myapi.vercel.app/v1/data keeps failing — can you inspect that endpoint and tell me if the x402 setup looks correct, what version it uses, and if there are any reported issues?”
Technical details
Endpoint
GEThttps://solana-token-check.vercel.app/v1/x402-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate or audit an x402 pay-per-call URL before committing payment, compare pricing across x402 services, debug x402 integration issues, or programmatically discover the payment options and network compatibility of any x402 endpoint. It is the right choice whenever the primary goal is inspection and validation of the x402 protocol configuration rather than consuming the underlying data service.
Side effects
- URL is not an x402 endpoint (returns non-402 status, verdict may be 'not_x402')
- Endpoint unreachable or times out
- Endpoint only has testnet options (mainnet_options = 0)
- Malformed x402 headers causing parse errors
- Invalid URL format in query parameter
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/api",
"issues": [],
"options": [
{
"network": "eip155:8453",
"price_usd": 0.001,
"asset_symbol": "USDC"
}
],
"verdict": "ok",
"summary_en": "Valid x402 endpoint: 2 mainnet option(s), from $0.001 USDC.",
"http_status": 402,
"cheapest_usd": 0.001,
"x402_version": 2,
"mainnet_options": 2
}
}Tags
x402
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