# Spraay Gateway Multi-Chain RPC Call

> Spraay Gateway Multi-Chain RPC Call is a paid API for AI agents from gateway.spraay.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Executes a JSON-RPC method call on a specified blockchain via Alchemy or Helius as the underlying node provider.

## Facts

- Endpoint: POST https://gateway.spraay.app/api/v1/rpc/call
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spraay-gateway-multi-chain-rpc-call-c849aaf9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YxwXhbDv12NEHwHNPFP47

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 spraay-gateway-multi-chain-rpc-call-c849aaf9 -d '<json body>'
```

Example prompt: Call eth_getBalance on Ethereum mainnet for address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 using a premium RPC node backed by Alchemy.

## When to prefer this

Choose this endpoint when you need reliable, low-latency JSON-RPC access to multiple blockchains (Ethereum ecosystem or Solana) through premium node providers without managing your own API keys or node infrastructure. Ideal for agents that need occasional or burst on-chain queries on a pay-per-call basis rather than a monthly subscription.

## Known failure modes

- Unsupported chain identifier returns an error
- Invalid RPC method name returns JSON-RPC error code -32601 (method not found)
- Malformed params array causes -32602 (invalid params)
- Payment failure blocks the call with HTTP 402
- Node provider (Alchemy/Helius) downtime or rate limit propagates as 5xx error
- Requesting archival data on a non-archive endpoint returns null or error

## How this service works

Premium multi-chain RPC call via Alchemy/Helius.

## Output

Returns the standard JSON-RPC result object for the invoked method, containing chain-specific data such as balances, block details, transaction receipts, contract return values, or other on-chain state, routed through premium Alchemy or Helius infrastructure.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string"
  },
  "method": {
   "type": "string"
  },
  "params": {
   "type": "array"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spraay-gateway-multi-chain-rpc-call-c849aaf9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.spraay.app](https://www.zero.xyz/host/gateway.spraay.app/llms.txt)