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X402 Hub Chain Check
x402
X402 Hub Chain Check is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.144192/call, status unknown (last checked 2026-09-14).
Checks blockchain/chain-related data or status via a query string, protected by x402 micropayments on Base
Price / call$0.144192
Success—
StatusUnknown
How this service works
63 paid API endpoints protected by x402 micropayments on Base
Output
Returns a data object containing the response from the upstream chain-check API, typically on-chain or blockchain-related information corresponding to the submitted query string.
Example use cases
Verify on-chain transaction status
“Run a chain check for this transaction hash 0xabc123... and tell me if it's confirmed on-chain.”
Query blockchain network data
“Can you do a chain check for 'Base network latest block' and return whatever data comes back?”
Check wallet or address status
“Run a chain check on '0xMyWalletAddress' and let me know what the on-chain data shows.”
Technical details
Endpoint
POSThttps://x402-hub.vercel.app/api/chaincheckWhen to prefer
Use this endpoint when you need to check or verify blockchain/chain-level data using a text query, and you are operating in a Web3/x402 micropayment environment on Base. Prefer this over general blockchain explorers when you want a programmatic, agent-callable API that accepts micropayments via x402.
Side effects
- Missing or empty 'query' field returns a validation error
- Invalid or unrecognized query format may return empty or null data
- Payment failure or insufficient USDC balance returns HTTP 402
- Upstream blockchain API unavailability causes service errors
- Malformed JSON body results in a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Query parameter for the API |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | Response data from upstream API |
Tags
x402
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