# QuickNode JSON-RPC Proxy — Aptos Testnet

> QuickNode JSON-RPC Proxy — Aptos Testnet 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 Aptos testnet blockchain node via QuickNode's infrastructure

## Facts

- Endpoint: POST https://x402.quicknode.com/aptos-testnet/
- Price: $10/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quicknode-e7783e3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CqAJO6dS3-Wi848kScP1X

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability quicknode-e7783e3d -d '<json body>'
```

Example prompt: Call the Aptos testnet via QuickNode and get the ledger info — use method 'getLedgerInfo' with an empty params array and request ID 1.

## When to prefer this

Use this endpoint when you need to interact specifically with the Aptos testnet blockchain via a reliable, high-availability QuickNode-hosted RPC node. Prefer this over self-hosted nodes for guaranteed uptime, and over mainnet endpoints when testing smart contracts or transactions without real asset risk.

## Known failure modes

- Invalid JSON-RPC method name returns error object with code and message
- Malformed params array causes parse or invalid params error
- Payment not fulfilled (x402) results in 402 Payment Required response
- Testnet node temporarily unavailable returns 503 or timeout
- Exceeding rate limits may return 429 Too Many Requests
- Non-existent account address returns null result or resource not found error

## How this service works

JSON-RPC proxy — aptos-testnet

## Output

A standard JSON-RPC 2.0 response object containing the result of the requested Aptos testnet method call, including fields like ledger version, block height, account resources, transaction receipts, or other chain state depending on the method invoked.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "jsonrpc",
  "method"
 ],
 "properties": {
  "id": {
   "type": [
    "number",
    "string"
   ],
   "description": "Request identifier"
  },
  "method": {
   "type": "string",
   "description": "JSON-RPC method name (e.g., eth_blockNumber, eth_call)"
  },
  "params": {
   "type": "array",
   "description": "Method parameters"
  },
  "jsonrpc": {
   "type": "string",
   "const": "2.0"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": [
    "number",
    "string"
   ]
  },
  "error": {
   "type": "object",
   "properties": {
    "code": {
     "type": "integer"
    },
    "message": {
     "type": "string"
    }
   }
  },
  "result": {
   "description": "RPC result (type varies by method)"
  },
  "jsonrpc": {
   "type": "string",
   "const": "2.0"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quicknode-e7783e3d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.quicknode.com](https://www.zero.xyz/host/x402.quicknode.com/llms.txt)