# OnChaiNinja Whale Tracker — Multi-Chain

> OnChaiNinja Whale Tracker — Multi-Chain is a paid API for AI agents from nininonchain.vercel.app, paid per call via x402, $2/call, status unknown (last checked 2026-09-12).

Returns whale wallet movement data and large transaction signals for a specified blockchain network

## Facts

- Endpoint: GET https://nininonchain.vercel.app/api/whale/%7Bchain%7D
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onchaininja-whale-tracker-multi-chain-946f0f17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SbKqT5krJ9p-XrQoG5Ov0

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 onchaininja-whale-tracker-multi-chain-946f0f17
```

Example prompt: Show me the latest whale movements on Base — I want to see which big wallets are making large transactions right now.

## When to prefer this

Use this endpoint when you need real-time whale wallet movement data for a specific blockchain (Base, Solana, Arbitrum, or others supported by OnChaiNinja) and want actionable on-chain alpha signals. Prefer this over generic block explorers when you specifically need aggregated large-transaction signals rather than raw transaction data.

## Known failure modes

- Unsupported chain name returns empty movements array or error
- Chain with no recent whale activity returns movements as empty array
- Malformed chain parameter may result in 400 error or null response
- Network latency from the underlying Vercel deployment may cause timeouts
- Payment failure ($2 USDC) blocks the request before processing

## How this service works

Alpha signals, whale tracking, rug scanning, and MEV protection across Base, Solana, Arbitrum, and more.

## Output

Returns a JSON object containing the queried chain identifier and an array of whale movements, each representing a large on-chain transaction or wallet activity signal detected on that network.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "base",
  "movements": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onchaininja-whale-tracker-multi-chain-946f0f17/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nininonchain.vercel.app](https://www.zero.xyz/host/nininonchain.vercel.app/llms.txt)