# Omnicall EVM Multi-Chain JSON-RPC Gateway

> Omnicall EVM Multi-Chain JSON-RPC Gateway is a paid API for AI agents from omnicall.gocreativeai.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Queries native balance, transaction count, contract status, block number, and gas price via JSON-RPC across 48 EVM-compatible chains including ETH, Base, Arbitrum, Polygon, and Solana

## Facts

- Endpoint: GET https://omnicall.gocreativeai.com/v1/rpc/:var1
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omnicall-evm-multi-chain-json-rpc-gateway-0bdd6e14
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YAqT_czStEIgdkzMMnDRQ

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 omnicall-evm-multi-chain-json-rpc-gateway-0bdd6e14
```

Example prompt: What's the current ETH balance and gas price on Arbitrum for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? No API key needed — use the Omnicall multi-chain RPC that supports 48 EVM chains and charges per call in USDC.

## When to prefer this

Choose this endpoint when an AI agent needs real-time on-chain data (balance, gas, nonce, contract check, block height) across any of 48 EVM chains without setting up API keys or managing RPC subscriptions; ideal for pay-per-call usage in trading bots, DeFi agents, or wallet monitoring workflows where keyless USDC micropayments on Base/Solana are preferred over monthly API subscriptions

## Known failure modes

- Unsupported chain identifier returns error or empty result
- Invalid wallet address format causes JSON-RPC parse error
- Missing required 'input' query parameter returns 400 Bad Request
- Payment not provided results in 402 Payment Required with x402 challenge
- RPC node timeout or chain congestion may cause slow or failed response
- Malformed JSON-RPC method name returns method-not-found error

## How this service works

Multi-chain EVM RPC across 48 chains — native balance, tx count, contract check, latest block & gas price via public JSON-RPC. Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, Blast, Scroll, Linea, Mantle, zkSync, Berachain, Sonic, Unichain, World Chain + 32 more. Pass 'address', 'chain/address', or 'chains' to list all. No API key — one endpoint, every major chain, for on-chain, wallet and trading agents.

## Output

Returns structured JSON-RPC response containing the requested on-chain data — such as native token balance in wei, transaction nonce count, boolean contract check, latest block number, or current gas price in wei — for the specified chain and address

## 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": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "input"
     ],
     "properties": {
      "input": {
       "type": "string",
       "description": "endpoint argument"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/omnicall-evm-multi-chain-json-rpc-gateway-0bdd6e14/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from omnicall.gocreativeai.com](https://www.zero.xyz/host/omnicall.gocreativeai.com/llms.txt)