# klymax402 NFT Metadata Lookup

> klymax402 NFT Metadata Lookup is a paid API for AI agents from klymax402.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Fetches on-chain NFT metadata (name, image, attributes, description, token URI) for a given contract address and token ID on Ethereum or Base.

## Facts

- Endpoint: GET https://klymax402.com/api/nft-metadata/api/metadata
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-nft-metadata-lookup-67a7af92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_49QwCTG0uIn21aJoUbBg1

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 klymax402-nft-metadata-lookup-67a7af92
```

Example prompt: Can you pull the metadata for Bored Ape Yacht Club token #5555 — the contract is 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum? I want to see its name, image, and traits.

## When to prefer this

Use this endpoint when you need structured NFT metadata (image, traits, description, collection name) for a specific token on Ethereum or Base without managing your own RPC infrastructure or API keys. It is well-suited for agents that need to display, analyze, or verify individual NFT tokens on a per-call basis at low cost via x402 USDC micropayments.

## Known failure modes

- Invalid or non-existent contract address returns empty or error response
- Token ID not found within the contract returns null metadata
- Unsupported chain value (not 'ethereum' or 'base') may result in an error
- Payment failure (insufficient USDC) returns 402 Payment Required
- Rate limiting or upstream RPC issues may cause timeouts
- Contracts that store metadata off-chain or on IPFS may return incomplete data if the URI is unavailable

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

Returns a JSON object with the NFT's name, chain, image URL, token ID, contract address, token URI, attributes array, description, external URL, animation URL, and collection name.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string",
   "description": "Blockchain: 'ethereum' or 'base' (default: ethereum)"
  },
  "tokenId": {
   "type": "string",
   "description": "Token ID within the contract"
  },
  "contract": {
   "type": "string",
   "description": "NFT contract address (e.g. 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "example",
  "chain": "example",
  "image": "example",
  "tokenId": "example",
  "contract": "example",
  "tokenUri": "example",
  "attributes": [],
  "description": "example",
  "externalUrl": "example",
  "animationUrl": "example",
  "collectionName": "example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-nft-metadata-lookup-67a7af92/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)