# Phantom API — Blockchain RPC Gateway

> Phantom API — Blockchain RPC Gateway is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Executes JSON-RPC calls against 57+ blockchain networks, returning on-chain data such as balances, transactions, blocks, and smart contract state

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/stable/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-blockchain-rpc-gateway-2241922f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VCv_7_UcF2PyeFP0q47Pu

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 phantom-api-blockchain-rpc-gateway-2241922f -d '<json body>'
```

Example prompt: What's the current ETH balance of wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet? Use the eth_getBalance RPC method.

## When to prefer this

Choose this endpoint when you need pay-per-call, multi-chain JSON-RPC access without committing to a node provider subscription. It is ideal for agents that query multiple blockchains infrequently and want to pay $0.01 USDC per call via x402 rather than managing API keys or monthly plans. Prefer it over managed providers like Alchemy or Infura when you need lightweight, permissionless on-chain reads across 57+ networks without registration.

## Known failure modes

- Invalid RPC method name returns JSON-RPC error with code -32601
- Malformed params array causes parse or invalid params error
- Unsupported network or chain not available returns error
- Payment not fulfilled (x402) causes 402 Payment Required response
- Rate limiting or node downtime causes timeout or 503
- Invalid contract address or ABI mismatch returns execution revert

## How this service works

Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.

## Output

Returns a standard JSON-RPC response object containing a result field with the on-chain data (balance in wei, block object, transaction receipt, contract return value, etc.) or an error object with code and message if the call fails.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-blockchain-rpc-gateway-2241922f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phantom-api-omega.vercel.app](https://www.zero.xyz/host/phantom-api-omega.vercel.app/llms.txt)