# Zapper NFT Balances

> Zapper NFT Balances is a paid API for AI agents from public.zapper.xyz, paid per call via x402, $0.001125/call, status down (last checked 2026-09-16).

Fetch NFT holdings and balances for one or more wallet addresses via Zapper's x402 API

## Facts

- Endpoint: POST https://public.zapper.xyz/x402/nft-balances
- Price: $0.001125/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/public-zapper-xyz-0b20f78a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JEzOal3YY4pyRP92vS0tS

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 public-zapper-xyz-0b20f78a -d '<json body>'
```

Example prompt: Can you pull up all the NFTs held by wallet address 0x1234...abcd using Zapper? I want to see what collections and tokens they own.

## When to prefer this

Use this endpoint when you need on-chain NFT holdings data for one or more wallet addresses and want Zapper's aggregated, multi-chain indexed view. Prefer this over raw RPC calls when you need normalized, multi-collection NFT data without running your own indexer.

## Known failure modes

- Invalid wallet address format returns an error
- Unsupported network or chain returns empty or error response
- Rate limiting or quota exceeded returns 429 or payment required
- Address with no NFTs returns empty balances array
- Payment not accepted or x402 protocol failure blocks request

## How this service works

Returns NFT holdings and estimated USD valuations for one or multiple addresses, with pagination and sorting options.

## Output

Returns a structured list of NFT balances for the queried wallet address(es), including collection names, token IDs, quantities, and associated network/chain data as indexed by Zapper.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "first": {
   "type": "integer",
   "default": 10,
   "description": "Number of NFTs to return"
  },
  "sortBy": {
   "type": "string",
   "default": "USD_WORTH",
   "description": "Sort order for results (e.g. \"USD_WORTH\", \"NETWORK\", \"COLLECTION\")"
  },
  "chainIds": {
   "type": "array",
   "items": {
    "type": "integer"
   },
   "description": "Optional list of Chain IDs to filter by"
  },
  "addresses": {
   "type": "array",
   "items": {
    "type": "string",
    "description": "A 0x wallet address"
   },
   "description": "Array of 0x wallet addresses to scan"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/public-zapper-xyz-0b20f78a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from public.zapper.xyz](https://www.zero.xyz/host/public.zapper.xyz/llms.txt)