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QuickNode JSON-RPC Proxy — Cyber Sepolia
x402
QuickNode JSON-RPC Proxy — Cyber Sepolia is a paid API for AI agents from x402.quicknode.com, paid per call via x402, $10/call, status unknown (last checked 2026-09-14).
Proxies JSON-RPC calls to the Cyber Sepolia testnet blockchain via QuickNode's infrastructure
Price / call$10
Success—
StatusUnknown
How this service works
JSON-RPC proxy — cyber-sepolia
Output
Returns a standard JSON-RPC 2.0 response object containing the result of the requested method call — e.g. block number as hex, transaction hash, account balance in wei, contract return data, or an error object if the call fails.
Example use cases
Example prompt
“Call eth_blockNumber on the Cyber Sepolia testnet using QuickNode's RPC proxy and tell me the current block height.”
Technical details
Endpoint
POSThttps://x402.quicknode.com/cyber-sepolia/When to prefer
Choose this endpoint when you need to interact specifically with the Cyber Sepolia testnet (the test network for the Cyber blockchain) via standard Ethereum JSON-RPC calls. Prefer this over generic RPC providers when you need QuickNode's reliability and uptime guarantees for Cyber Sepolia specifically. Use this for testing smart contracts or dApps on Cyber's testnet environment before mainnet deployment.
Side effects
- Invalid JSON-RPC method name returns error code -32601 Method not found
- Malformed params array returns error code -32602 Invalid params
- Network unavailable or node syncing issues return 503 or timeout
- Payment not provided or insufficient returns 402 Payment Required
- Rate limit exceeded returns 429 Too Many Requests
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| id | — | Request identifier |
| methodrequired | string | JSON-RPC method name (e.g., eth_blockNumber, eth_call) |
| params | array | Method parameters |
| jsonrpcrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| id | — | |
| error | object | |
| result | — | RPC result (type varies by method) |
| jsonrpc | string |
Tags
x402
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