# Phantom API — Katana Token Balances

> Phantom API — Katana Token Balances 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).

Fetches token balances for a given wallet owner address on the Katana network, optionally filtered by specific contract addresses

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/katana/token/balances
- 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-katana-token-balances-22062e73
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_23h3pbXg_mKuI9Jtj3Ipt

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-token-balances-22062e73 -d '<json body>'
```

Example prompt: What are the token balances for wallet 0xAbC123... on the Katana network? Check balances for contract addresses 0xToken1... and 0xToken2....

## When to prefer this

Choose this endpoint when you need fast, pay-per-call token balance lookups specifically on the Katana network without managing your own RPC node or indexer. It's ideal for lightweight agents that need on-demand balance checks rather than streaming or batch historical queries, and when cost efficiency at $0.01/call is important.

## Known failure modes

- Invalid or malformed owner address returns an error or empty result
- Non-existent contract addresses may return zero balances or errors
- Network congestion or node unavailability may cause timeouts
- Payment failure via x402 protocol results in 402 response before data is returned
- Unsupported contract address format may cause parsing errors

## 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 list of token balances associated with the specified owner address on the Katana network, broken down by contract address — including token amounts and potentially metadata such as token name, symbol, and decimals.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "owner": {
   "type": "string"
  },
  "contractAddresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-katana-token-balances-22062e73/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)