# Synapse API — Berachain NFT Metadata Lookup

> Synapse API — Berachain 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 2026-09-15).

Fetches on-chain NFT metadata for a given token ID and contract address on the Berachain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/berachain/nft/metadata
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-berachain-nft-metadata-lookup-2cb18f16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uFJ-TZNrIsZUcKX2ovPQn

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-berachain-nft-metadata-lookup-2cb18f16 -d '<json body>'
```

Example prompt: Can you look up the metadata for token ID 42 from the Berachain NFT contract at 0x1234abcd5678ef901234abcd5678ef901234abcd — I want to see its name, description, and traits.

## When to prefer this

Choose this endpoint when you specifically need NFT metadata from the Berachain network and want a pay-per-call model without API key subscriptions. Useful when building agents that need on-demand NFT data enrichment across the Berachain ecosystem without setting up your own RPC infrastructure.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty response
- Token ID not minted or out of range results in a not-found error
- Berachain RPC node downtime may cause timeouts or 503 errors
- Malformed contractAddress or tokenId input may return a 400 validation error
- Contract does not implement standard metadata URI may return null or 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 the on-chain metadata for the specified NFT token on Berachain, typically including the token name, description, image URI, external URL, and an array of trait/attribute key-value pairs 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-berachain-nft-metadata-lookup-2cb18f16/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)