# AgentServices Whale Tracker — Large Bitcoin Holder Activity

> AgentServices Whale Tracker — Large Bitcoin Holder Activity is a paid API for AI agents from agentservices.to, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a list of large Bitcoin holders (whales) filtered by minimum BTC balance, with configurable result limits.

## Facts

- Endpoint: GET https://agentservices.to/v1/whales
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentservices-whale-tracker-large-bitcoin-holder-activity-993172cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aZ8l-sMhDyfprsJ8Zr09w

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 agentservices-whale-tracker-large-bitcoin-holder-activity-993172cb
```

Example prompt: Show me the top 10 Bitcoin whales holding at least 500 BTC each — I want to see who the biggest holders are right now.

## When to prefer this

Choose this endpoint when you need a quick, pre-filtered list of large Bitcoin holders without running your own on-chain indexer. Ideal for agents doing market intelligence, whale tracking, or concentration analysis where you want BTC whales specifically (not Ethereum or other chains). The $0.02 per-call micropayment via x402 on Base makes it cost-effective for occasional lookups. Prefer alternatives if you need real-time streaming data, multi-chain whale tracking, or raw transaction-level detail.

## Known failure modes

- Invalid min_btc value (negative or non-numeric) returns a 400 error
- limit exceeding maximum allowed count may be capped or rejected
- Payment not completed via x402 micropayment returns 402 Payment Required
- Data may be slightly delayed relative to real-time blockchain state
- Empty result set if min_btc threshold is set too high

## How this service works

Paid data APIs for AI agents. Crypto market data, DeFi yields, IP geolocation, dispute resolution, marketing intelligence. Powered by x402 micropayments on Base.

## Output

A JSON array of whale wallet records, each representing a large Bitcoin holder filtered by the specified minimum BTC balance, up to the requested limit count. Records likely include wallet address, BTC balance, and related on-chain metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer"
  },
  "min_btc": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentservices-whale-tracker-large-bitcoin-holder-activity-993172cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentservices.to](https://www.zero.xyz/host/agentservices.to/llms.txt)