# TC AI Premium NFT Balance Checker

> TC AI Premium NFT Balance Checker is a paid API for AI agents from tc-ai-premium.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-14).

Returns the NFT balance for a given wallet address on supported EVM chains (Base, Sei, Avalanche, Polygon)

## Facts

- Endpoint: POST https://tc-ai-premium.vercel.app/api/x402/nft?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tc-ai-premium-nft-balance-checker-663ef760
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__6i270qMdeUb9tcUFoqAP

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 tc-ai-premium-nft-balance-checker-663ef760 -d '<json body>'
```

Example prompt: How many NFTs does wallet address 0xAbC123...def456 hold on Base chain? Use the payAI facilitator.

## When to prefer this

Use this endpoint when you need to quickly look up how many NFTs a specific wallet address holds on Base, Sei, Avalanche, or Polygon, especially when working within the x402 micropayment protocol ecosystem with facilitators like base, payAI, or daydreams.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Unsupported chain/facilitator combination returns an error (e.g. payAI does not support certain chains)
- Payment of $0.1 USDC not fulfilled results in 402 Payment Required
- Empty response schema may make it difficult to parse result structure
- Network or Vercel deployment downtime causes 500 errors

## How this service works

Get your NFT balance on base chain

## Output

Returns the NFT balance (count of NFTs held) for the specified wallet address on the requested blockchain network, such as Base, Sei, Avalanche, or Polygon.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string",
   "description": "List chain support: [base, sei, avalanche, polygon]. Default is chain base.\n Facilitator base support chain: base. \n Facilitator payAI support chain: base, sei, avalanche, polygon. \n Facilitator daydreams support chain: base, polygon "
  },
  "address": {
   "type": "string",
   "description": "Your address to search data. \nDefault is the payment address."
  },
  "facilitator": {
   "type": "string",
   "description": "The facilitator type.\n List support [base, payAI, daydreams]"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tc-ai-premium-nft-balance-checker-663ef760/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tc-ai-premium.vercel.app](https://www.zero.xyz/host/tc-ai-premium.vercel.app/llms.txt)