# Losbeto Subscribe Whale — Whale Alert Subscription

> Losbeto Subscribe Whale — Whale Alert Subscription is a paid API for AI agents from markets.losbeto.xyz, paid per call via x402, $19.99/call, status unknown (last checked 2026-09-14).

Subscribes an AI agent or user to whale-level crypto market alerts and signals via USDC micropayment on Solana or Base.

## Facts

- Endpoint: GET https://markets.losbeto.xyz/subscribe-whale
- Price: $19.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/losbeto-subscribe-whale-whale-alert-subscription-9e1b2e37
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yz1bl6xUwxxx0Ww4kOQsA

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 losbeto-subscribe-whale-whale-alert-subscription-9e1b2e37
```

Example prompt: Subscribe me to the Losbeto whale alert feed so I get notified whenever large crypto trades happen on-chain — pay with USDC.

## When to prefer this

Choose this endpoint when you need to subscribe an AI trading agent or automated system to large on-chain transaction alerts (whale activity) with payment handled natively via USDC on Solana or Base, and when $19.99 per subscription call is acceptable for access to curated whale signal data.

## Known failure modes

- Insufficient USDC balance to cover the $19.99 per-call payment
- Invalid or missing wallet/chain parameters returns an error
- Unsupported chain selection causes a payment routing failure
- Malformed input schema returns a 400-level error
- Payment not confirmed on-chain results in subscription not being activated

## How this service works

Losbeto: 67 endpoints x402 monetizados. Solana + Base. USDC micropayments para AI agents. Preços a partir de $0.003.

## Output

A subscription confirmation response in JSON indicating that the agent or user is now enrolled to receive whale-level trading alerts and market signals, likely including a subscription ID or access token for the feed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {
      "format": {
       "type": "string",
       "description": "Response format (json)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "description": "WHALE: unlimited calls for 30 days plus maximum priority. For high-frequency agents that would otherwise burn the per-call path."
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/losbeto-subscribe-whale-whale-alert-subscription-9e1b2e37/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from markets.losbeto.xyz](https://www.zero.xyz/host/markets.losbeto.xyz/llms.txt)