# NFT Provenance & Scam Check

> NFT Provenance & Scam Check is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns current owners, mint info, and sale history for a specific NFT, with scam/provenance signals — cached up to 24 hours

## Facts

- Endpoint: GET https://x402.professorsausages.com/nft/:chain/asset/:address/:tokenId/provenance
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nft-provenance-scam-check-252dcf90
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FgMueMQ2Efrmcl35CT5TY

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-provenance-scam-check-252dcf90
```

Example prompt: Can you check the provenance and ownership of this NFT — it's token ID 4521 of the contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum — I want to know who owns it and whether it looks like a scam before I buy it.

## When to prefer this

Use this endpoint when you need quick, low-cost provenance and ownership data for a specific NFT — especially for scam-checking before a purchase. Prefer this over full blockchain explorers when you want a pre-parsed, agent-friendly response at $0.005 per call. Best for spot-checks on individual tokens rather than bulk analytics.

## Known failure modes

- Token ID or contract address not found on the specified chain — returns 404 or empty result
- Unsupported chain specified — returns error indicating invalid chain parameter
- Mint info not exposed by the chain/contract — partial result returned with available fields only
- Cached data up to 24h old may not reflect very recent transfers or sales
- Rate limiting or payment failure returns 402 Payment Required

## How this service works

Provenance-lite: current owners, mint info when exposed, sale history — cached ≤24h

## Output

Returns current owner(s), mint information (when available), sale/transfer history, and provenance signals useful for detecting scams or verifying legitimacy of a specific NFT. Data is cached for up to 24 hours.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nft-provenance-scam-check-252dcf90/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)