# Onvexia Whale Alerts

> Onvexia Whale Alerts is a paid API for AI agents from onvexia.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-17).

Returns large on-chain transaction alerts (whale movements) across multiple blockchains with labelled addresses and asset metadata.

## Facts

- Endpoint: GET https://onvexia.com/v1/whales/alerts
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onvexia-whale-alerts-cd19f17f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3r1ZX2BxQ_ttQOiKPbL-I

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 onvexia-whale-alerts-cd19f17f
```

Example prompt: Pull the latest whale alerts from Onvexia so I can see which large wallets are moving significant funds across chains right now.

## When to prefer this

Choose this endpoint when you need real-time or near-real-time large transaction alerts across multiple blockchains from a single API, especially when you want labelled addresses and cross-chain coverage in one call rather than querying individual chain explorers.

## Known failure modes

- Empty data array returned when no whale alerts match the filter criteria
- Invalid or unrecognised properties parameter returns an error or empty result
- Payment not processed correctly via x402 protocol results in a 402 response blocking the call
- Rate limiting if the endpoint is called too frequently without valid payment
- Stale data if the analytics pipeline has a processing delay

## How this service works

Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.

## Output

Returns a JSON object with a data array of whale alert events (large on-chain transactions), including labelled sender/receiver addresses, asset identifiers, chain, amount, and timestamps, plus a meta object pointing to the full OpenAPI docs at onvexia.com/openapi.json.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "meta": {
   "docs": "https://onvexia.com/openapi.json",
   "endpoint": "/v1/whales/alerts"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-whale-alerts-cd19f17f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onvexia.com](https://www.zero.xyz/host/onvexia.com/llms.txt)