# ScriptMasterLabs ACP x402 Ethereum RPC Proxy

> ScriptMasterLabs ACP x402 Ethereum RPC Proxy is a paid API for AI agents from acp-x402-scriptmasterlabs.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Executes Ethereum JSON-RPC method calls (e.g. eth_blockNumber, eth_getTransactionByHash) via a pay-per-call proxy settled in USDC on Base via x402

## Facts

- Endpoint: GET https://acp-x402-scriptmasterlabs.onrender.com/x402/eth-rpc?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scriptmasterlabs-acp-x402-ethereum-rpc-proxy-96ca05a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Hesoi11G9lTaFQ7WRGRK-

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 scriptmasterlabs-acp-x402-ethereum-rpc-proxy-96ca05a0
```

Example prompt: What is the current Ethereum block number? Use the eth_blockNumber RPC method to look it up.

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call Ethereum RPC access without managing your own node or API key subscription — particularly useful for agents that need on-demand blockchain queries settled automatically via x402 micropayments in USDC on Base.

## Known failure modes

- Invalid or unsupported RPC method name returns an error response
- Malformed transaction hash or address returns a null or error result
- Payment not settled in USDC on Base causes a 402 Payment Required response
- Service unavailable on Render free tier due to cold start or downtime
- Block tag or block number out of range returns null or pruned data error

## How this service works

Pay-per-call crypto, RWA, federal, SEC, and compliance APIs. Settled in USDC on Base via x402. Hyphen routes only (e.g. /x402/rwa-aggregates, /x402/gas-tracker).

## Output

Returns the raw JSON-RPC response for the requested Ethereum method — e.g. the current block number as a hex string, transaction object fields (hash, from, to, value, gas), or account balance in wei, depending on the method called.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "hash": {
       "type": "string",
       "example": "0x"
      },
      "block": {
       "type": "string",
       "default": "latest",
       "example": "latest"
      },
      "method": {
       "type": "string",
       "default": "eth_blockNumber",
       "example": "eth_blockNumber"
      },
      "address": {
       "type": "string",
       "example": "0x0000000000000000000000000000000000000000"
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scriptmasterlabs-acp-x402-ethereum-rpc-proxy-96ca05a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from acp-x402-scriptmasterlabs.onrender.com](https://www.zero.xyz/host/acp-x402-scriptmasterlabs.onrender.com/llms.txt)