# Synapse API — NFTs by Owner (Abstract Network)

> Synapse API — NFTs by Owner (Abstract Network) 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).

Retrieves all NFTs owned by a given wallet address on the Abstract blockchain network, with pagination support.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/abstract/nft/by-owner
- 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-nfts-by-owner-abstract-network-443f3915
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fQfqRR3WAma2WnzMRwtuF

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-nfts-by-owner-abstract-network-443f3915 -d '<json body>'
```

Example prompt: Can you fetch all the NFTs owned by wallet 0xAbC123...def456 on the Abstract network, and show me the first 20 results?

## When to prefer this

Use this endpoint when you need to enumerate NFTs held by a specific wallet specifically on the Abstract (L2) blockchain network. It supports pagination via pageKey and limit, making it suitable for wallets with large NFT holdings. Prefer this over generic NFT APIs if your use case is specifically Abstract-chain NFT ownership data.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Expired or invalid pageKey causes pagination to fail
- Network or RPC errors from the Abstract chain provider
- Rate limiting if too many calls are made in rapid succession
- Empty result if the wallet holds no NFTs on Abstract

## 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 a list of NFTs owned by the specified wallet address on the Abstract network, including token identifiers and metadata, along with a pagination key (pageKey) for retrieving subsequent pages of results.

## 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-nfts-by-owner-abstract-network-443f3915/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)