# Synapse API — Gnosis NFT by Owner

> Synapse API — Gnosis NFT by Owner 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 all NFTs owned by a specific wallet address on the Gnosis blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/gnosis/nft/by-owner
- 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-gnosis-nft-by-owner-b72715f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ikWNl7g7jfb9I4_92bJyi

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-gnosis-nft-by-owner-b72715f2 -d '<json body>'
```

Example prompt: Show me all the NFTs owned by the Gnosis wallet address 0x4a2b8c9d... — fetch up to 50 results.

## When to prefer this

Use this endpoint when you specifically need NFT ownership data on the Gnosis (xDai) blockchain. Prefer this over generic multi-chain NFT lookups when you know the target network is Gnosis, or when you need paginated traversal of a large NFT portfolio on that chain. It is pay-per-call at $0.01 USDC, making it economical for occasional lookups.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Gnosis network unavailability causes a timeout or 5xx error
- Invalid pageKey causes pagination failure or unexpected results
- Limit value out of acceptable range may cause a validation error
- Non-Gnosis addresses return empty NFT lists even if they hold NFTs on other chains

## 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

A paginated list of NFTs owned by the specified wallet address on the Gnosis blockchain, including token metadata, contract addresses, token IDs, and a pagination key for fetching additional results if the collection exceeds the requested limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number"
  },
  "owner": {
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-gnosis-nft-by-owner-b72715f2/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)