# Synapse API — Monad NFT Metadata Lookup

> Synapse API — Monad NFT Metadata Lookup is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves metadata for a specific NFT on the Monad blockchain given a contract address and token ID

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/monad/nft/metadata
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-monad-nft-metadata-lookup-e9a40d6d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Wyi69K0-gpSgGYHnmDj5d

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 synapse-api-monad-nft-metadata-lookup-e9a40d6d -d '<json body>'
```

Example prompt: Can you pull up the metadata for token ID 42 from the Monad NFT contract at 0xAbC123...?

## When to prefer this

Use this endpoint when you specifically need NFT metadata from the Monad blockchain network. It is purpose-built for Monad and offers pay-per-call pricing via x402, making it suitable for on-demand lookups without subscription overhead. Prefer this over general multi-chain NFT APIs when targeting Monad specifically.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty response
- Token ID not found on the contract returns a not-found error
- Monad network connectivity issues may cause timeouts
- Malformed input (non-string tokenId or contractAddress) may result in validation errors
- NFTs with off-chain or unavailable metadata URIs may return incomplete data

## How this service works

High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.

## Output

Returns structured NFT metadata for the specified token on Monad, typically including token name, description, image URI, and attribute/trait arrays as defined by the NFT contract's metadata standard.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tokenId": {
   "type": "string"
  },
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-monad-nft-metadata-lookup-e9a40d6d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)