# Synapse API — Kaia NFT by Owner

> Synapse API — Kaia 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 2026-10-10).

Retrieves all NFTs owned by a specified wallet address on the Kaia blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/kaia/nft/by-owner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-kaia-nft-by-owner-664da9ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JTGuff4PVeIlxhvmBzeAE

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-kaia-nft-by-owner-664da9ab -d '<json body>'
```

Example prompt: Show me all the NFTs owned by wallet 0x1234abcd... on the Kaia blockchain, and return up to 20 results.

## When to prefer this

Use this endpoint when you need to enumerate NFT holdings of a specific wallet address on the Kaia blockchain specifically. Prefer this over generic NFT APIs when your use case is Kaia-native and you need paginated, reliable NFT ownership data with pay-per-call pricing.

## Known failure modes

- Invalid or malformed owner wallet address returns an error or empty result
- Non-existent wallet address returns an empty NFT list
- Invalid pageKey causes pagination failure or error
- Exceeding rate limits or payment failure returns 402 or rate-limit error
- Kaia network unavailability causes timeout or 503 error

## 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 paginated list of NFTs owned by the specified wallet address on the Kaia blockchain, including token metadata such as token IDs, contract addresses, and potentially NFT names and images, along with a page key for fetching subsequent pages.

## 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-kaia-nft-by-owner-664da9ab/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)