# Phantom API — Base Network RPC Endpoint

> Phantom API — Base Network RPC Endpoint 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).

Provides JSON-RPC access to the Base blockchain network, enabling read and write operations on Base chain data via a pay-per-call model.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/base/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-base-network-rpc-endpoint-a64f2cbd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s4o51DJBmqInhe1QpPVXw

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-base-network-rpc-endpoint-a64f2cbd -d '<json body>'
```

Example prompt: What's the current ETH balance of wallet address 0xAbc...123 on the Base network, and what's the latest block number?

## When to prefer this

Choose this endpoint when you need pay-per-call, no-subscription access to Base network RPC without managing API keys or monthly commitments. Ideal for agents that need sporadic or bursty Base chain queries billed via x402/USDC micropayments. Prefer over self-hosted nodes when you want zero infrastructure overhead for Base-specific operations.

## Known failure modes

- Invalid RPC method name returns error code -32601 (method not found)
- Malformed params array returns error code -32602 (invalid params)
- Payment not included or insufficient returns 402 Payment Required
- Network congestion or node unavailability returns 503 or timeout
- Invalid address format causes parse error
- Exceeding rate limits may result in 429 Too Many Requests

## 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 standard Ethereum JSON-RPC response objects including result data (block info, balances, receipts, logs, contract return values) or error objects with code and message fields, formatted per the Ethereum JSON-RPC specification.

## 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-base-network-rpc-endpoint-a64f2cbd/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)