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QuickNode JSON-RPC Proxy — Unichain Sepolia
x402
QuickNode JSON-RPC Proxy — Unichain Sepolia is a paid API for AI agents from x402.quicknode.com, paid per call via x402, $10/call, status unknown (last checked 2026-09-15).
Forwards JSON-RPC method calls to the Unichain Sepolia testnet via QuickNode's blockchain node infrastructure
Price / call$10
Success—
StatusUnknown
How this service works
JSON-RPC proxy — unichain-sepolia
Output
Returns a standard JSON-RPC 2.0 response object containing the result of the requested method (e.g. block number as hex, balance in wei, transaction hash, call return data) or an error object with code and message if the call fails.
Example use cases
Example prompt
“Call eth_getBalance on the Unichain Sepolia testnet for address 0xAbC123...456 using QuickNode's JSON-RPC proxy, using jsonrpc 2.0 with request id 1.”
Technical details
Endpoint
POSThttps://x402.quicknode.com/unichain-sepolia/When to prefer
Use this endpoint when you need to interact with the Unichain Sepolia testnet specifically — for testing smart contracts, querying testnet balances, or simulating transactions before mainnet deployment. Prefer this over generic Ethereum endpoints when your target chain is Unichain Sepolia.
Side effects
- Invalid JSON-RPC method name returns error code -32601 Method not found
- Malformed params array returns error code -32602 Invalid params
- Network congestion or node unavailability returns 503 or timeout
- Payment failure (insufficient USDC) returns HTTP 402
- Invalid address format in params returns RPC error
- Testnet node sync lag may return stale data
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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