# Phantom API — Katana RPC Endpoint

> Phantom API — Katana 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 2026-10-16).

Provides JSON-RPC access to the Katana blockchain network for reading on-chain data and interacting with smart contracts via pay-per-call x402 payments.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/katana/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-katana-rpc-endpoint-6435938b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dIUaVJHRsAWhFk3XXRb1E

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-katana-rpc-endpoint-6435938b -d '<json body>'
```

Example prompt: Can you query the Katana blockchain RPC to get the latest block number using eth_blockNumber?

## When to prefer this

Choose this endpoint when you need fast, pay-per-call JSON-RPC access to the Katana blockchain network specifically, without committing to a subscription. Ideal for agents that need sporadic on-chain lookups on Katana without managing their own node infrastructure.

## Known failure modes

- Invalid RPC method name returns JSON-RPC error with code -32601 (method not found)
- Malformed params array causes parse error or invalid params response (-32602)
- Payment not included or insufficient USDC results in 402 Payment Required response
- Network congestion or node unavailability may return timeout or 503 errors
- Calling write methods without a signed transaction returns execution error

## 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 on-chain data such as block details, account balances, transaction receipts, contract call return values, or event logs depending on the method called.

## 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-katana-rpc-endpoint-6435938b/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)