# Phantom API — Unichain RPC Endpoint

> Phantom API — Unichain 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 2026-09-14).

Provides JSON-RPC access to the Unichain blockchain network, enabling agents to query on-chain data and interact with smart contracts via pay-per-call micropayments.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/unichain/rpc
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-unichain-rpc-endpoint-c96dfede
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yG9Siz8nLgiJPo__AxXXB

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-unichain-rpc-endpoint-c96dfede -d '<json body>'
```

Example prompt: What is the current ETH balance of wallet 0xAbC...123 on Unichain? Use the eth_getBalance RPC method.

## When to prefer this

Choose this endpoint when you need fast, pay-per-call JSON-RPC access to the Unichain network without committing to a subscription. Ideal for agents that make sporadic or low-volume blockchain queries and want to avoid rate limits of free public RPCs. Prefer this over generic EVM RPC providers when the target chain is specifically Unichain.

## Known failure modes

- Invalid or unsupported JSON-RPC method name returns an error response
- Malformed params array causes a parse or invalid params error
- Payment not included or insufficient USDC causes a 402 Payment Required response
- Network congestion or node unavailability causes timeout or 503
- Querying a block or transaction hash that does not exist returns null result

## 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 the result field with the requested blockchain data (e.g. balance in wei, block object, transaction receipt, contract return value) 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-unichain-rpc-endpoint-c96dfede/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)