# NFT Wallet Collection Portfolio (Scam Check & Owners)

> NFT Wallet Collection Portfolio (Scam Check & Owners) is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns a wallet's NFT holdings rolled up by collection, including token balances and spam/scam flags, cached up to 24 hours

## Facts

- Endpoint: GET https://x402.professorsausages.com/nft/:chain/wallet/:address/collections
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nft-wallet-collection-portfolio-scam-check-owners-01f11805
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s5oHrSogK78iQHZOlVyUB

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 nft-wallet-collection-portfolio-scam-check-owners-01f11805
```

Example prompt: Can you pull up all the NFT collections held by wallet 0xAbC123...def on Base and flag any that look like spam or scam tokens?

## When to prefer this

Use this endpoint when you need a rolled-up, per-collection view of a wallet's NFT holdings with built-in spam/scam flagging. It is ideal for portfolio audits, due diligence on counterparties, or screening wallets before accepting NFT transfers. Prefer it over raw on-chain queries when you want pre-aggregated data with safety signals without building your own scam detection logic.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Unsupported chain identifier returns a 400 or not-found error
- Wallet with no NFTs returns an empty collection list
- Cache miss on a new address may cause slightly longer response
- Rate limit or payment failure returns a 402 or 429 error

## How this service works

Wallet portfolio rolled up per collection (balances + spam flags) — cached ≤24h

## Output

A list of NFT collections held by the wallet on the specified chain, with each entry showing token balance per collection and spam/scam flag indicators. Data is cached and may be up to 24 hours old.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nft-wallet-collection-portfolio-scam-check-owners-01f11805/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)